Electronic device and charging method using same

Abstract

This electronic device may comprise: a first charger including any one of a battery buck converter, a boost converter, or an LDO regulator; a second charger including a power converter that increases an input current, supplied from an external device, by a designated factor, and outputs the increased current, and decreases an input voltage, supplied from the external device, by the designated factor and outputs the decreased voltage; and a processor. The processor can: identify whether the external device can adjust the output voltage and / or the output current on the basis that the external device is connected; supply a charging current by using the second charger on the basis that the external device is in a state in which the setting of the output voltage and / or the output current is fixed; and supply the charging current to the battery by additionally using the first charger on the basis that the charging current being supplied by the second charger of the electronic device has fallen below the maximum outputtable current value of the external device.

Description

Electronic devices and charging methods using the same

[0001] This article relates to electronic devices, for example, electronic devices and methods of charging them.

[0002] Electronic devices may include batteries to supply the power necessary to perform various functions. Electronic devices may receive power from a power transmission device, either wired or wireless, to charge the batteries.

[0003] A power receiving device can communicate data with a power supply device (e.g., travel adapter (TA)) and receive power from the power supply device using a protocol specified for power delivery (PD) communication (e.g., power data objects (PDO) or programmable power supply (PPS)).

[0004] A charger (e.g., a travel adapter) may be connected to an electronic device via a wire and configured to supply power to the electronic device. The electronic device (e.g., a smartphone) may use the power supplied from the charger to charge a battery and supply power to a load circuit (e.g., a processor) for operation. For example, the power supplied from the charger to the electronic device may be distributed to the battery and the load circuit through a power management circuit.

[0005] Chargers supporting PPS (Programmable Power Supply) communication can provide enhanced charging capabilities to electronic devices. PPS can refer to a communication protocol that allows the charger and the device being charged (e.g., the terminal) to dynamically adjust power-related variables (e.g., current, voltage) during the charging process. A charger supporting PPS can communicate with a connected device to determine the optimal charging voltage and current levels based on its specific requirements and capabilities.

[0006] PD chargers that do not support PPS have a limitation of charging up to 15W using PMIC.

[0007] When using a direct charger for a high-power PD charger that does not support PPS, charging is possible at over 15W, but as the battery voltage increases, the charging current decreases, so there is a limitation that charging must be done at a lower current than when using a charger that supports PPS.

[0008] The electronic device and charging method using the same according to this document are intended to prevent the phenomenon of reduced charging current by using a direct charger and PMIC simultaneously even for chargers that do not support PPS.

[0009] An electronic device may include a first charger including one of a battery buck converter, a boost converter, or an LDO regulator, a second charger including a power converter for increasing an input current supplied from an external device by a specified factor and outputting it, and for decreasing an input voltage supplied from the external device by the specified factor and outputting it, and a processor. The processor may determine, based on the external device being connected, whether the external device can adjust an output voltage and / or an output current, supply a charging current using the second charger based on a state in which the external device has a fixed setting of an output voltage and / or an output current, and additionally supply a charging current on a battery using the first charger based on a charging current of the electronic device using the second charger being lower than a maximum outputtable current value of the external device.

[0010] The method of operating the electronic device may further include an operation of determining whether the external device can adjust an output voltage and / or an output current based on the external device being connected, an operation of supplying a charging current using a second charger based on the external device having a fixed setting of an output voltage and / or an output current, and an operation of additionally supplying a charging current on the battery using a first charger based on the charging current using the second charger of the electronic device being lower than a maximum outputtable current value of the external device.

[0011] The electronic device and charging method using the same according to this document can improve the charging speed and maintain high charging efficiency by using a direct charger and PMIC simultaneously even for a charger that does not support PPS.

[0012] An electronic device and a charging method using the same according to this document can improve the charging speed by using a PMIC, while minimizing the heat generated in the circuit of a battery during charging by limiting the charging current of the PMIC.

[0013] FIG. 1 is a block diagram of an electronic device within a network environment according to various embodiments.

[0014] FIG. 2 is a block diagram of a power management module and a battery according to one embodiment.

[0015] Figure 3a is a circuit diagram showing the charging process of a battery according to a comparative example.

[0016] Figure 3b is a graph showing the battery charging current over time depending on whether PPS (programmable power supply) is supported.

[0017] Figure 4 is a block diagram showing the configuration of an electronic device according to one embodiment.

[0018] Fig. 5 is a flowchart illustrating a charging method of an electronic device according to one embodiment.

[0019] Fig. 6 is a flowchart illustrating a charging method of an electronic device according to one embodiment.

[0020] 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 the electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of the electronic device (104) or the server (108) via a second network (199) (e.g., a long-range wireless communication network). In 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)).

[0021] 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 operations. According to one embodiment, as at least a part of the data processing or operations, 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 an auxiliary 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 with the main processor (121). For example, when the electronic device (101) includes the main processor (121) and the auxiliary processor (123), the auxiliary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a given function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0022] 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.

[0023] 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).

[0024] 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).

[0025] 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).

[0026] 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.

[0027] 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. According to 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.

[0028] 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).

[0029] 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.

[0030] 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.

[0031] 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).

[0032] The 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. According to one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0033] 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.

[0034] 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 as, for example, at least a part of a power management integrated circuit (PMIC).

[0035] 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.

[0036] 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).

[0037] 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.

[0038] 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, for example, by the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device via the at least one selected 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).

[0039] According to various embodiments, the antenna module (197) may form a mmWave antenna module. In 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.

[0040] 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)).

[0041] 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.

[0042] Electronic devices according to the various embodiments disclosed in this document 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 the embodiments of this document are not limited to the aforementioned devices.

[0043] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document 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 this document, 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 those 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.

[0044] The term "module" used in various embodiments of this document 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).

[0045] Various embodiments of the present document may be implemented as software (e.g., a program (140)) including one or more instructions 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 instruction among the one or more instructions 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 called instruction. The one or more instructions 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.

[0046] According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. The computer program product may be traded as a product 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) through 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 an intermediary server.

[0047] 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.

[0048] FIG. 2 is a block diagram (200) of a power management module (188) and a battery (189) according to one embodiment. 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).

[0049] 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).

[0050] 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)).

[0051] 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.

[0052] 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.

[0053] Figure 3a is a circuit diagram showing the charging process of a battery according to a comparative example.

[0054] According to FIG. 3A, the charging circuit diagram of the battery may include a first charger (310) and a second charger (320) (e.g., a direct charging circuit). The electronic device according to the comparative embodiment may charge the battery using the first charger (310) during normal charging and fast charging. The electronic device according to the comparative embodiment may charge the battery using the second charger (320) during ultra-fast charging.

[0055] Chargers supporting PPS (Programmable Power Supply) communication can provide enhanced charging capabilities to electronic devices. PPS can refer to a communication protocol that allows the charger and the device being charged (e.g., the terminal) to dynamically adjust power-related variables (e.g., current, voltage) during the charging process. A charger supporting PPS can communicate with a connected device to determine the optimal charging voltage and current levels based on its specific requirements and capabilities.

[0056] When charging electronic devices using the primary charger (310) with a charger that does not support PPS, the efficiency of high-power charging can be as low as 90%, which can cause overheating or slow charging. Due to the increased surface heating of the electronic device, the battery can only be charged at a maximum current of 3A.

[0057] The electronic device can be charged using a second charger (e.g., a direct charging circuit) (320) for a charger that does not support PPS.

[0058] When using the second charger (320) for a charger that does not support PPS, the charging current decreases as the battery voltage increases, so the charging current may be relatively reduced and the charging speed may be slow compared to a charger that supports PPS.

[0059] An electronic device according to this document can charge at the maximum current that can be output from the charger by simultaneously using the first charger (310) and the second charger (320) when a charger that does not support PPS is connected.

[0060] Figure 3b is a graph showing the battery charging current over time depending on whether PPS (programmable power supply) is supported.

[0061] In the graph of Fig. 3b, the horizontal axis may represent time, and the vertical axis may represent charging current. The first graph (302) illustrates the charging current over time when charging is performed using a charger that supports PPS. The second graph (304) illustrates the charging current over time when charging is performed using a charger that does not support PPS.

[0062] When an electronic device uses a charger that supports PPS, it can charge at the maximum current allowed by the battery. On the other hand, when a charger that does not support PPS is used, the second charger (320) is used, and the charging current may decrease as the charging voltage of the battery increases. In the initial charging section (330), it can be confirmed that the y-axis value of the second graph (304) gradually decreases over time. In the initial charging section (330), it can be confirmed that the y-axis value of the first graph (302) maintains a relatively constant value over time. It can be seen that in the initial charging section (330), the first graph (302) charges at a relatively higher current than the second graph (304).

[0063] In the initial charging section (330), it can be confirmed that the charging speed of the first graph (302) is relatively faster due to the difference in the charging current values ​​on the first graph (302) and the second graph (304). In the first graph (302) using a charger capable of supporting PPS, it can be confirmed that charging is relatively large in the initial section (330) and the charging current decreases rapidly thereafter, whereas in the second graph (304), the charging amount is insufficient in the initial section (330) and the charging current is maintained relatively long thereafter.

[0064] An electronic device according to this document can charge at the maximum current that the charger can output by simultaneously using the first charger (310) and the second charger (320) when a charger that does not support PPS is connected. The electronic device according to this document can provide a relatively faster charging speed even when a charger that does not support PPS is connected.

[0065] According to various embodiments, in addition to the initial charging section (330), in other charging sections (not shown), when a charger that does not support PPS is used compared to a charger that supports PPS, the charging current may be lower and the charging speed may be lower. According to various embodiments, in addition to the initial charging section (330), in other charging sections (not shown), the battery (410) may be charged using a charger that does not support PPS. The charging voltage and / or current settings of a charger that does not support PPS may be changed depending on the voltage state of the battery (410).

[0066] Figure 4 is a block diagram showing the configuration of an electronic device according to one embodiment.

[0067] According to one embodiment, the electronic device (400) may include a battery (410), a first charger (412), a second charger (414), a processor (420), and a memory (430), and some of the illustrated components may be omitted or replaced. The electronic device may further include at least some of the components and / or functions of the electronic device (101) of FIG. 1. At least some of the components of the illustrated (or not illustrated) electronic device may be operatively, functionally, and / or electrically connected to each other. According to one embodiment, the processor (420) may be configured as one or more processors, which may perform operations or data processing related to control and / or communication of each component of the electronic device. According to one embodiment, the processor may include at least some of the components and / or functions of the processor (120) of FIG. 1. According to one embodiment, the processor (420) may include a configuration for controlling a separate charger of a power management module (e.g., power management module (188) of FIG. 1).

[0068] According to one embodiment, there is no limitation to the computational and data processing functions that the processor (420) can implement on the electronic device, but below, features related to the control of the battery (410) and the Power Management Integrated Circuit (PMIC) will be described in detail. The operations of the processor (420) can be performed by loading instructions stored in the memory (430).

[0069] According to one embodiment, the electronic device (400) includes one or more memories (430), and the memories (430) may include main memory and storage. The main memory may be composed of volatile memory such as dynamic random access memory (DRAM), static RAM (SRAM), or synchronous dynamic RAM (SDRAM). Alternatively, the memory (430) may be a non-volatile memory and include a large-capacity storage device. The storage may include at least one of a one-time programmable ROM (OTPROM), a PROM, an EPROM, an EEPROM, a mask ROM, a flash ROM, a flash memory, a hard drive, or a solid-state drive (SSD). The memory (430) may store various file data, and the stored file data may be updated according to the operation of the processor (420).

[0070] In one embodiment, the battery (410) may power at least one component of the electronic device (400). In one embodiment, the battery (410) may include, for example, a rechargeable secondary battery.

[0071] A PMIC (power management integrated circuit) may refer to an integrated circuit (e.g., power management module (188) of FIG. 1) that plays a role in efficiently managing and supplying power in an electronic device (400).

[0072] A PMIC can regulate power by converting voltage levels through a DC-DC converter to provide various power levels. For example, a PMIC can convert input power to a low voltage required by a battery and then convert the input power to a voltage suitable for the core components of the system. The PMIC may include a first charger (412) and a second charger (414). For example, the first charger (412) may be a charging circuit including at least one of a buck converter, a boost converter, and an LDO (Low Dropout) regulator. The second charger (414) may be a charging circuit that changes the input voltage at an N:1 ratio and outputs it. For example, the second charger (414) may be a direct charging circuit or a switched capacitor voltage divider circuit. The second charger (414) may refer to a direct charging circuit that charges a battery by providing a constant voltage and current.

[0073] According to one embodiment, the processor (420) determines whether the charger is capable of adjusting output voltage and output current based on the external device being connected, supplies a charging voltage using a second charger (e.g., a direct charger (414)) based on the external device being a charger with fixed output voltage and output current, and determines the output current of the battery, and additionally supplies a charging voltage using the first charger (412) based on the output current of the battery being lower than a specified set value.

[0074] The first charger (412) may include, for example, at least one of a buck converter, a boost converter, and an LDO regulator.

[0075] The first charger (412) can regulate power by converting voltage levels through a DC-DC converter to provide various power levels. For example, the first charger (412) can convert input power to a lower voltage required by the battery and then convert the input power to a voltage suitable for the system components.

[0076] The first charger (412) can control battery charging. It can efficiently charge the battery and prevent overcharging or overdischarging, thereby extending the battery life and maintaining stable operation.

[0077] The second charger (414) may include a power converter that increases the input current supplied from an external device by a specified rate and outputs it, and decreases the input voltage supplied from the external device by the specified rate and outputs it. The second charger (414) may mean, for example, a direct charger.

[0078] The processor (420) can determine the current output from the charger based on the current charging voltage of the battery and the resistance value of the charging circuit. The processor (420) can calculate the additional current that can be supplied from the charger based on the current value output from the charger and the maximum current value that the charger can output.

[0079] According to one embodiment, the output current of an external device (e.g., a charger) may be determined by the following equation:

[0080] [Formula 1]

[0081] Charger output current = ((charger voltage - 2*battery voltage))?((resistance between charger and battery))

[0082] In [Formula 1], it can be confirmed that the output current of the charger is proportional to the voltage of the charger and inversely proportional to the voltage of the battery (410). As charging progresses and the voltage of the battery (410) increases, the output current of the charger may decrease. The situation in which charging is delayed due to a decrease in the output current of the charger has been explained in the second graph (304) of FIG. 3b above. The graph of FIG. 3b is only an example, and the charging current of the first charger (310) and the second charger (320) over time may vary depending on the settings.

[0083] The electronic device (400) according to this document can charge at the maximum current that the charger can output by simultaneously using the first charger (412) and the second charger (414) when a charger that does not support PPS is connected. The electronic device (400) according to this document can supplement the charging current by using the first charger (412) even when a charger that does not support PPS is connected and provide a relatively faster charging speed.

[0084] According to one embodiment, [Table 1] and [Table 2] below are only examples of a case where the charger is set to a maximum current of 3A when the battery voltage is 4.14V or higher, and the present invention is not limited thereto. The battery voltage may vary depending on the type, capacity, and condition of the battery, and the charger supply power setting may vary accordingly. [Table 1] below shows the calculated value of the additional current that can be supplied by the charger based on the battery voltage and the current value that can be output from the charger for each battery voltage. For example, the voltage of the power supplied by a charger that does not support PPS may be 9V and the current may be operating in 3A mode. The maximum current that the charger can supply may be 3A. The current output by the charger for each battery voltage may refer to the charging current using the second charger (414). The additional current that the charger can supply may refer to the charging current that can be additionally supplied through the first charger (412).

[0085] The charging current using the second charger (414) described in Table 1 and the additional charging current that can be supplied through the first charger (412) are merely examples and are not limited thereto. The charging current using the second charger (414) and the additional charging current that can be supplied through the first charger (412) may vary depending on the battery voltage.

[0086] Battery voltage (V) Current output from the second charger (direct charging circuit) by battery voltage (A) Additional current available from the first charger (A) 4.14304.22.50.54.252.080.924.31.671.334.351.251.754.470.52.5

[0087] The processor (420) may control the second charger (e.g., direct charger) (414) to maintain the output current of the charger below a specified value (e.g., 3 A) because the charger may output a higher current than the acceptable output current when the battery voltage is less than 4.14 V, for example.

[0088] However, when the battery voltage exceeds 4.14 V, the difference between the maximum output voltage of the charger and the battery voltage may decrease. As the difference between the maximum output voltage of the charger and the battery voltage decreases, the output current of the charger may also decrease. For example, when the battery voltage is 4.25 V, the output current of the charger may be 2.5 A. The processor (420) may determine that it can supply an additional current of 0.5 A when the maximum output current acceptable to the charger is 3 A.

[0089] According to this document, the processor (420) can additionally supply current (e.g., 0.5 A) to the battery (410) by using the first charger (412). The processor (420) can supply current and voltage to the battery (410) simultaneously by using the direct charger (414) and the first charger (412).

[0090] In one embodiment, the processor (420) may limit the amount of current additionally supplied to the battery (410) using the first charger (412). Since it is difficult to control surface heating of the electronic device (400) when the amount of current supplied from the first charger (412) exceeds a specified level, the processor (420) may limit the amount of current supplied using the first charger (412).

[0091] [Table 2] below shows the final output current of the charger in a situation where the processor (420) limits the amount of current supplied using the first charger (412) to 1.65 A.

[0092] Battery voltage (V) Current output from the second charger by battery voltage (A) Additional current available from the first charger (A) Charging current of the first charger (A) Final TA output current (A) 4.1430034.22.50.50.534.252.080.920.9234.31.671.331.3334.351.251.751.652.94.470.52.51.652.15

[0093] In one embodiment, the processor (420) may reduce the amount of current supplied as the charging gets closer to a complete state. The processor (420) may reduce the current supplied from the PMIC as the charging gets closer to a complete state.

[0094] The processor (420) can determine the amount of current supplied using the first charger (412) as a preset value (e.g., 1.65 A). The amount of current supplied using the first charger (412) may vary depending on the setting.

[0095] For example, in a situation where the voltage of the battery (410) is 4.35 V and the current that can be output from the charger is 1.25 A, the processor (420) can receive a current corresponding to a preset value (e.g., 1.65 A) using the first charger (412). The processor (420) can control surface heating of the electronic device (400) by limiting the current supplied to the battery (410) using the first charger (412).

[0096] According to one embodiment, the processor (420) may determine a current output current of the battery (410) based on a voltage of the battery (410) and a resistance value in the charging circuit, determine an additional supplyable current value based on the current output current value of the battery and the maximum output current value of the battery (410), and determine an additional supplyable current value through a first charger (e.g., the first charger (412)) based on the additional supplyable current value. The first charger may include, for example, the first charger (412).

[0097] According to one embodiment, the processor (420) may determine an additional supplyable current value by subtracting the current output current value of the battery (410) from the maximum output current value of the battery (410), and may determine an additional supplyable current value through the first charger based on the additional supplyable current value.

[0098] According to one embodiment, the processor (420) may preset an upper limit of a current value to be additionally supplied through the first charger, and control the current value to be additionally supplied through the first charger so as not to exceed the set value.

[0099] According to one embodiment, the processor (420) may receive a list of power data objects (PDOs) containing voltage and current information that may be supplied to the battery (410) from an external device.

[0100] In one embodiment, the processor (420) can select a PDO from the list to determine the voltage and current to be supplied to the battery (410).

[0101] In one embodiment, the processor (420) may determine to preferentially supply voltage and current using a second charger (e.g., a direct charging circuit (414)) based on the voltage and current to be supplied to the battery (410), determine a current output current value of the battery (410) based on the voltage on the battery (410), and determine to additionally supply current through the first charger based on the maximum output current value of the battery (410) exceeding the current output current value of the battery (410). The second charger (414) may include, for example, the direct charging circuit (414).

[0102] In one embodiment, the processor (420) may supply a charging voltage and current to the battery using the first charger (412) based on whether the charging power of the external device is below a first level. The first level may include, for example, 15W. The processor (420) may classify the charging state as normal charging or fast charging when the charging power of the external device is below the first level.

[0103] According to one embodiment, the processor (420) may determine whether the external device is a charger capable of adjusting output voltage and output current based on whether the charging power of the external device exceeds a second level, and may supply the charging voltage and current to the battery (410) using the second charger based on the type of the external device, or may supply the charging voltage and current to the battery (410) using the first charger and the second charger simultaneously. The second level may include, for example, 25 W. The processor (420) may classify the charging state as ultra-fast charging when the charging power of the external device exceeds the second level.

[0104] Fig. 5 is a flowchart illustrating a charging method of an electronic device according to one embodiment.

[0105] The operations described through FIG. 5 can be implemented based on instructions that can be stored in a computer recording medium or memory (e.g., memory (130) of FIG. 1). The illustrated method (500) can be executed by the electronic device described above through FIGS. 1 to 4 (e.g., electronic device (400) of FIG. 4), and the technical features described above will be omitted below. The order of each operation of FIG. 5 can be changed, some operations can be omitted, and some operations can be performed simultaneously.

[0106] In operation 510 of FIG. 5, a processor (e.g., processor 420 of FIG. 4) may determine whether the external device can adjust its output voltage and / or output current based on the external device being connected. A charger capable of adjusting the output voltage and output current may include, for example, a charger capable of supporting PPS communication. A charger supporting PPS (programmable power supply) communication may provide enhanced charging capabilities to an electronic device. PPS may refer to a communication protocol that allows a charger and a device being charged (e.g., a terminal) to dynamically adjust power-related variables (e.g., current, voltage) during the charging process. A charger supporting PPS may communicate with a connected device to determine an optimal charging voltage and current level based on specific requirements and capabilities.

[0107] In operation 520 of FIG. 5, the processor (420) may perform charging using a second charger (e.g., the second charger (414) of FIG. 4) based on the connected external device performing charging at a fixed voltage for a certain period of time. The second charger (414) may include 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. The second charger (414) may mean, for example, a direct charger (e.g., the second charger (direct charging circuit) (414) of FIG. 4).

[0108] The direct charging circuit (414) may include a circuit (e.g., a capacitor voltage divider circuit) configured to convert the voltage value of a power signal received from a power supply device through an overvoltage protection circuit into a fixed voltage conversion ratio, and to charge a battery (e.g., a battery (410) of FIG. 4) at a high speed without power loss (or while minimizing power loss). If the power loss rate in the direct charging circuit (414) is ideally '0', the ratio of the output power output from the output terminal of the direct charging circuit (414) to the input power input to the input terminal of the direct charging circuit (414) may be '1'. For example, the direct charging circuit (414) may include an N:1 DCIC (direct charging integrated circuit) configured to distribute the voltage input to the input terminal using a plurality of capacitors (e.g., N capacitors) to lower the input voltage by 1 / N times (where N is a natural number of 2 or more) and output it through the output terminal, and to increase the current input to the input terminal by N times using a plurality of capacitors and output it through the output terminal.

[0109] In operation 530 of FIG. 5, the processor (420) may additionally proceed with charging using the first charger based on the charging current using the second charger (414) being lower than a specified set value. The first charger (412) may mean, for example, a PMIC or a buck charger.

[0110] A PMIC can regulate power by converting voltage levels through a DC-DC converter to provide various power levels. For example, a PMIC can convert input power to the lower voltage required by a battery, then convert it to a voltage suitable for the system's core components.

[0111] The PMIC may include a first charger (412) and a second charger (414). For example, the first charger (412) may be at least one charging circuit among a Buck converter, a Boost converter, and an LDO (Low Dropout) regulator. The second charger (414) may be a charging circuit that changes an input voltage at a ratio of N:1 and outputs it. For example, the second charger (414) may be a switched capacitor voltage divider circuit.

[0112] The processor (420) can supply a charging voltage using the first charger (412) together with the second charger (414) based on the output current of the battery (410) being lower than a specified set value.

[0113] The processor (420) may supply a charging voltage and current to the battery (410) using the first charger (412) based on the charging power of the external device being less than a first level (e.g., 15 W). The processor (420) may determine whether the external device is a charger capable of adjusting the output voltage and output current based on the charging power of the external device exceeding a second level (e.g., 25 W), and may supply a charging voltage and current to the battery (410) using the second charger (414) based on the type of the external device, or control to use the first charger (412) and the second charger (414) simultaneously. Here, the first level may mean a charging power that is relatively lower than the second level. When the charging power of the external device is less than the first level, either a normal charging or a fast charging method may be used. Fast charging may mean a method of charging the battery (410) at a relatively faster rate than normal charging.

[0114] If the charging power of the external device exceeds the second level, it may refer to an ultra-fast charging method. The ultra-fast charging method may refer to a method of charging the battery (410) at a relatively faster rate than fast charging.

[0115] Fig. 6 is a flowchart illustrating a charging method of an electronic device according to one embodiment.

[0116] The operations described through FIG. 6 can be implemented based on instructions that can be stored in a computer recording medium or memory (e.g., memory (130) of FIG. 1). The illustrated method (600) can be executed by the electronic device described above through FIGS. 1 to 4 (e.g., electronic device (400) of FIG. 4), and the technical features described above will be omitted below. The order of each operation of FIG. 6 can be changed, some operations can be omitted, and some operations can be performed simultaneously.

[0117] In operation 602 of FIG. 6, a processor (e.g., processor (420) of FIG. 4) may receive a list of power data objects (PDOs) containing information about voltages and currents that can be supplied to a battery (e.g., battery (410) of FIG. 4) from a charger (e.g., travel adapter (TA)), and may select an appropriate PDO from the list to determine voltage and current to be supplied. USB PD may refer to a standardized protocol that allows fast charging and power supply via a USB connection. In USB PD, a Power Data Object (PDO) may indicate a specification of a specific power that a USB PD power source (e.g., a charger or a power adapter) may provide. A PDO may include information about available voltage and current levels that can be delivered to a connected device. Each USB PD power source may include multiple PDOs representing different power profiles that can be supported. The PDO list may include information about voltages and currents of the multiple PDOs.

[0118] According to one embodiment, the processor (420) may receive a list of power data objects (PDOs) containing voltage and current information that may be supplied to the battery (410) from an external device. The processor (420) may select a PDO from the received list to determine the voltage and current to be supplied to the battery (410).

[0119] In operation 604 of FIG. 6, the processor (420) may start charging using a direct charging circuit (e.g., the direct charging circuit (414) of FIG. 4) based on the voltage and current levels to be supplied being determined based on the PDO list. The direct charging circuit (414) may include a circuit (e.g., a capacitor voltage divider circuit) configured to convert a voltage value of a power signal received from a power supply device through an overvoltage protection circuit into a fixed voltage conversion ratio, while charging a battery (e.g., the battery (410) of FIG. 4) at a high speed without power loss (or while minimizing power loss).

[0120] According to one embodiment, the processor (420) may determine to supply voltage and current preferentially using the second charger (414) based on the voltage and current to be supplied to the battery, determine the current output current value of the battery (410) based on the voltage on the battery (410), and determine to supply additional current through the first charger (412) based on the maximum output current value of the battery (410) exceeding the current output current value of the battery (410).

[0121] In operation 610 of FIG. 6, the processor (420) can compare the value of the current charged through the direct charging circuit (414) with the maximum output current of the charger (TA).

[0122] The processor (420) can continue charging using the direct charging circuit in operation 612 based on the fact that the value of the current being charged through the direct charging circuit (414) is not less than the value of the maximum output current of the charger (operation 610-No).

[0123] According to one embodiment, the processor (420) may determine an additional supplyable current value as a value obtained by subtracting the current output current value of the battery (410) from the maximum output current value of the battery (410) based on whether the maximum output current value of the battery (410) exceeds the current output current value of the battery (410), and may determine an additional supplyable current value through the first charger (412) based on the additional supplyable current value.

[0124] The processor (420) may proceed with charging by additionally using the first charger (412) in operation 614 based on the value of the current being charged through the direct charging circuit (414) being less than the maximum output current of the charger (operation 610-Yes). The processor (420) may proceed with charging simultaneously by using the first charger (412) and the direct charging circuit (414).

[0125] According to one embodiment, the processor (420) may determine an additional supplyable current value by subtracting the current output current value of the second charger (414) from the maximum output current value of the external device, and may determine an additional supplyable current value through the first charger (412) based on the additional supplyable current value.

[0126] According to one embodiment, the processor (420) may preset an upper limit of a current value to be additionally supplied through the first charger (412), and control the current value to be additionally supplied through the first charger (412) so as not to exceed the set value.

[0127] According to one embodiment, the processor (420) determines whether the external device can adjust the output voltage and / or output current based on the external device being connected, supplies charging current using the second charger (414) based on the external device having a fixed setting of the output voltage and / or output current, and additionally supplies charging current to the battery (410) using the first charger (412) based on the charging current using the second charger (414) of the electronic device being lower than the maximum outputtable current value of the external device.

[0128] According to one embodiment, the processor (420) may determine a charging current using the second charger (414) of the battery (410) based on the voltage of the battery (410) and the resistance value of the charging circuit, determine an additional supplyable current value based on the charging current value using the second charger (414) of the battery (410) and the maximum output current value of the external device, and determine an additional supplyable current value through the first charger (412) based on the additional supplyable current value.

[0129] According to one embodiment, the processor (420) may control to supply charging voltage and current to the battery (410) using the second charger (414) or to use the first charger (412) and the second charger (414) simultaneously based on whether the charging power of the external device exceeds the second level. Here, the second level may mean, for example, a situation in which ultra-fast charging is performed at 25 W. The first charger (412) may mean an IF PMIC, and the second charger (414) may mean a direct charger. The external device may mean, for example, a charger that does not support PPS.

[0130] The embodiments of this document disclosed in this specification and drawings are merely specific examples to easily explain the technical contents according to the embodiments of this document and to help understand the embodiments of this document, and are not intended to limit the scope of the embodiments of this document. Therefore, the scope of one embodiment of this document should be interpreted to include all changes or modified forms derived based on the technical idea of ​​one embodiment of this document, in addition to the embodiments disclosed herein.

Claims

1. In an electronic device (400), Battery (410); A first charger (412) comprising either a buck converter, a boost converter or an LDO regulator; A second charger (414) including a power converter that increases the input current supplied from an external device by a specified rate and outputs it, and lowers the input voltage supplied from the external device by the specified rate and outputs it; and It comprises a processor (420), and the processor comprises: Based on the external device being connected, check if the external device can adjust the output voltage and / or output current, The external device supplies charging current using the second charger based on a fixed setting of output voltage and / or output current, An electronic device that supplies a charging current to the battery by additionally using the first charger based on the charging current using the second charger of the electronic device being lower than the maximum outputtable current value of the external device.

2. In paragraph 1, The above processor The charging current of the battery using the second charger is determined based on the voltage of the battery and the resistance value of the charging circuit, Determine the additional supplyable current value based on the charging current value using the second charger of the above battery and the maximum output current value of the external device, An electronic device that determines the additional current value to be supplied through said first charger based on the additional supplyable current value.

3. In paragraph 2, The above processor The value obtained by subtracting the current output current value of the second charger from the maximum output current value of the external device is determined as the additional supplyable current value. An electronic device that determines the additional current value to be supplied through said first charger based on the additional supplyable current value.

4. In paragraph 2, The above processor Pre-set the upper limit of the current value to be additionally supplied through the above first charger, An electronic device that controls the current value additionally supplied through the first charger so that it does not exceed a set value.

5. In paragraph 1, The above processor An electronic device receiving a list of power data objects (PDOs) containing voltage and current information that can be supplied to the battery from the external device.

6. In paragraph 5, The above processor An electronic device that selects a PDO from a list and determines the voltage and current to be supplied to said battery.

7. In paragraph 6, The above processor Based on the determination of the voltage and current to be supplied to the battery, the voltage and current are supplied preferentially using the second charger, Determine the current output current value of the battery based on the voltage on the battery, An electronic device that determines to supply additional current through the first charger based on the maximum output current value of the battery exceeding the current output current value of the battery.

8. In paragraph 7, The above processor Based on the fact that the maximum output current value of the battery exceeds the current output current value of the battery, the value obtained by subtracting the current output current value of the battery from the maximum output current value of the battery is determined as the additionally supplyable current value. An electronic device that determines the additional current value to be supplied through said first charger based on the additional supplyable current value.

9. In paragraph 1, The above processor Based on the charging power of the above external device exceeding the second level, An electronic device that supplies a charging voltage and current to the battery using the second charger or controls the use of the first charger and the second charger simultaneously.

10. In the method of operating an electronic device, Action to determine whether an external device can adjust its output voltage and / or output current based on the external device being connected; An operation of supplying a charging current using a second charger (414) based on the external device having a fixed setting of output voltage and / or output current; and Further comprising an operation of additionally supplying a charging current to the battery using the first charger (412) based on the charging current using the second charger (414) of the electronic device being lower than the maximum outputtable current value of the external device, The above first charger includes a DC-DC converter, A method wherein the second charger includes a power converter that increases an input current supplied from an external device by a specified rate and outputs it, and lowers an input voltage supplied from the external device by the specified rate and outputs it.

11. In Article 10, An operation of determining a charging current of the battery using the second charger based on the voltage of the battery and the resistance value of the charging circuit; An operation of determining an additional supplyable current value based on a charging current value using the second charger of the battery and a maximum output current value of the external device; and A method further comprising an operation of determining a current value to be additionally supplied through said first charger based on the additionally supplyable current value.

12. In paragraph 11, An operation of determining an additional supplyable current value by subtracting the current output current value of the second charger from the maximum output current value of the external device; and A method further comprising an operation of determining a current value to be additionally supplied through said first charger based on the additionally supplyable current value.

13. In paragraph 11, An operation for presetting an upper limit of the current value to be additionally supplied through the first charger; and A method further comprising an operation of controlling the current value additionally supplied through the first charger so as not to exceed a set value.

14. In paragraph 10, A method further comprising the action of receiving a list of power data objects (PDOs) containing voltage and current information that can be supplied to the battery from the external device.

15. In paragraph 14, A method further comprising the action of selecting a PDO from the list to determine the voltage and current to be supplied to said battery.

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