CN118056339A

CN118056339A - Electronic device with enhanced direct charge compatibility

Info

Publication number: CN118056339A
Application number: CN202280064883.5A
Authority: CN
Inventors: 金炅垣
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2021-09-30
Filing date: 2022-07-15
Publication date: 2024-05-17

Abstract

Various embodiments of the present disclosure relate to an electronic device and method including: a first charger including a switching regulator; and a second charger including a power converter that decreases an input current supplied from the external device by a specified multiple, and that increases an input voltage supplied from the external device by the specified multiple; wherein the present disclosure may include the steps of: based on detecting that the external device is connected in a wired manner, determining whether the external device is a first charging device that can control an output voltage and an output current based on control of the electronic device; if the external device is a first charging device, charging the battery by using a second charger; if the external device is a second charging device having a fixed output voltage and output current, and if the battery satisfies a specified initial condition, charging the battery by using a second charger; and if at least one of a plurality of specified first conditions is satisfied while the battery is charged by the second charger, disabling the second charger and charging the battery by using the first charger.

Description

Electronic device with enhanced direct charge compatibility

Technical Field

Various embodiments of the present disclosure relate to an electronic device with enhanced direct charging compatibility.

Background

As technology advances, power consumption of portable electronic devices tends to increase, and thus, the capacity of batteries (or battery cells) mounted on the portable electronic devices also tends to increase to higher capacities.

Recently, a charging device supporting a Programmable Power Supply (PPS) function has been mass-produced as a charging device for faster charging of a high-capacity battery mounted in an electronic device. Unlike other charging devices that do not support PPS functions (e.g., charging devices that provide a fixed output current and a fixed output current), charging devices that support PPS functions may support Programmable Power Supply (PPS) functions that change the power value (e.g., current and/or voltage) of the power signal. For example, a charging device supporting PPS functions may change an output current and an output voltage based on control of an electronic device. On the other hand, a charging device that does not support PPS function may have a fixed output current and output voltage.

Disclosure of Invention

Technical problem

When it is detected that the charging device is connected through a Universal Serial Bus (USB) connector, the electronic device may identify whether the connected charging device provides PPS functionality.

When the connected charging device provides PPS functionality, the electronic device may activate a direct charging circuit (e.g., a Direct Charging Integrated Circuit (DCIC)) and charge the battery using the direct charging circuit. The direct charging circuit may charge the battery at a high speed by decreasing the voltage value of the power signal received from the charging device by a specified multiple and increasing the current value of the power signal by a specified multiple.

When the connected charging device does not provide PPS functionality, the electronic device may deactivate the direct charging circuit and charge the battery using the switch charger circuit. Charging a battery using a switch charger circuit has disadvantages of lower charging efficiency (e.g., charging speed) and higher heat generation than charging a battery using a direct charging circuit.

Various embodiments of the present disclosure may provide such an electronic device and method: even in the case where the charging device does not support the PPS function, the electronic device and method can improve charging efficiency (e.g., charging speed) and reduce heat generation by charging the battery using a direct charging circuit for at least a portion of a period in which the battery is charged.

The technical problems to be achieved by the present disclosure are not limited to the above-mentioned technical problems, and other technical problems not mentioned will be apparent to those skilled in the art to which the present disclosure pertains from the following description.

Technical proposal

An electronic device according to various embodiments may include: a battery; a first charger including a switching regulator; a second charger including a power converter that outputs an input current supplied from an external device by increasing the input current by a specified multiple, and that outputs an input voltage supplied from the external device by decreasing the input voltage by a specified multiple; and a processor, and the processor may: identifying a type of the external device based on detecting that the external device is connected in a wired manner; determining whether the external device is a first charging device that can adjust the output voltage and the output current based on control of the processor; if the external device is a first charging device, charging the battery by using a second charger; and if the external device is not the first charging device but the second charging device having a fixed output voltage and output current, identifying whether the remaining amount of the battery or the voltage is less than a specified value as a specified initial condition of the battery; if the battery does not meet the specified initial condition, charging the battery by using a first charger; charging the battery by using a second charger if the battery meets the specified initial condition; monitoring whether a plurality of specified first conditions satisfy a state in which a current greater than an input current is input from a second charging device while the battery is charged by a second charger, a state in which a battery voltage of the battery is detected to be 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 specified first conditions is satisfied, disabling the second charger and charging the battery by using the first charger.

In a method of an electronic device according to various embodiments, the electronic device may include: a battery; a first charger including a switching regulator; and a second charger including a power converter that decreases an input current supplied from the external device by a specified multiple and that increases an input voltage supplied from the external device by a specified multiple, and the method may include: identifying a type of the external device based on detecting that the external device is connected in a wired manner; determining whether the external device is a first charging device that can adjust the output voltage and the output current based on control of the electronic device; if the external device is a first charging device, charging the battery by using a second charger; and if the external device is not the first charging device but the second charging device having a fixed output voltage and output current, identifying whether the remaining amount of the battery or the voltage is less than a specified value as a specified initial condition of the battery; if the battery does not meet the specified initial condition, charging the battery by using a first charger; charging the battery by using a second charger if the battery meets the specified initial condition; monitoring whether a plurality of specified first conditions satisfy a state in which a current greater than an input current is input from a second charging device while the battery is charged by a second charger, a state in which a battery voltage of the battery is detected to be 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 specified first conditions is satisfied, disabling the second charger and charging the battery by using the first charger.

Advantageous effects of the invention

Various embodiments of the present disclosure may provide such an electronic device and method: even in the case where the charging device does not support the PPS function, the electronic device and method can charge the battery by using the direct charging circuit for at least a portion of the period during which the battery is charged, thereby improving the charging efficiency (e.g., the charging speed) and reducing heat generation.

Further, various effects that can be achieved directly or indirectly through the present disclosure may be provided.

Drawings

Other aspects, features, and advantages of particular embodiments in accordance with the present disclosure will become more apparent from the accompanying drawings and the corresponding description.

Fig. 1 is a block diagram of an electronic device in a network environment, in accordance with various embodiments.

Fig. 2 is a block diagram of a power management module and a battery according to various embodiments.

Fig. 3 is a schematic block diagram of a wireless charging system according to various embodiments.

Fig. 4 is a flowchart illustrating an operation of the electronic device to charge a battery according to an embodiment.

Fig. 5 is a flowchart showing an operation of the electronic device according to the embodiment when the second charging device is connected.

Fig. 6 is a graph comparing a charging curve of an electronic device according to an embodiment and a charging curve according to a comparative example when a second charging device is connected.

Fig. 7 is a graph comparing heat generation of the electronic device according to the embodiment and heat generation of the electronic device according to the comparative example when the second charging device is connected.

Fig. 8 is a flowchart showing an operation of the electronic device according to the embodiment when the third charging device is connected.

Fig. 9 is a graph showing a charging curve of the electronic device according to the embodiment when the third charging device is connected.

Detailed Description

Fig. 1 is a block diagram illustrating an electronic device 101 in a network environment 100 according to various embodiments. Referring to fig. 1, an electronic device 101 in a network environment 100 may communicate with the electronic device 102 via a first network 198 (e.g., a short-range wireless communication network) or 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). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 via the server 108. According to an embodiment, the electronic device 101 may include a processor 120, a memory 130, an input module 150, a sound output module 155, a display module 160, an audio module 170, a sensor module 176, an interface 177, a connection end 178, a haptic module 179, a camera module 180, a power management module 188, a battery 189, a communication module 190, a Subscriber Identity Module (SIM) 196, or an antenna module 197. In some embodiments, at least one of the above-described components (e.g., connection end 178) may be omitted from electronic device 101, or one or more other components may be added to electronic device 101. In some embodiments, some of the components described above (e.g., sensor module 176, camera module 180, or antenna module 197) may be implemented as a single integrated component (e.g., display module 160).

The processor 120 may run, for example, software (e.g., program 140) to control at least one other component (e.g., hardware component or software component) of the electronic device 101 that is connected to the processor 120, and may perform various data processing or calculations. According to one embodiment, as at least part of the data processing or calculation, the processor 120 may store commands or data received from another component (e.g., the sensor module 176 or the communication module 190) into the volatile memory 132, process the commands or data stored in the volatile memory 132, and store the resulting data in the non-volatile memory 134. According to an embodiment, the processor 120 may include a main processor 121 (e.g., a Central Processing Unit (CPU) or an Application Processor (AP)) or an auxiliary processor 123 (e.g., a Graphics Processing Unit (GPU), a Neural Processing Unit (NPU), an Image Signal Processor (ISP), a sensor hub processor, or a Communication Processor (CP)) that is operatively independent of or combined with the main processor 121. For example, when the electronic device 101 comprises a main processor 121 and a secondary processor 123, the secondary processor 123 may be adapted to consume less power than the main processor 121 or to be dedicated to a particular function. The auxiliary processor 123 may be implemented separately from the main processor 121 or as part of the main processor 121.

The auxiliary processor 123 (instead of the main processor 121) may control at least some of the functions or states related to at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) when the main processor 121 is in an inactive (e.g., sleep) state, or the auxiliary processor 123 may control at least some of the functions or states related to at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) with the main processor 121 when the main processor 121 is in an active state (e.g., running an application). According to an embodiment, the auxiliary processor 123 (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., the camera module 180 or the communication module 190) functionally related to the auxiliary processor 123. According to an embodiment, the auxiliary processor 123 (e.g., a neural processing unit) may include hardware structures dedicated to artificial intelligence model processing. The artificial intelligence model may be generated through machine learning. Such learning may be performed, for example, by the electronic device 101 where artificial intelligence is performed or via a separate server (e.g., server 108). The learning algorithm may include, but is not limited to, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include a plurality of artificial neural network layers. The artificial neural network may be a Deep Neural Network (DNN), a Convolutional Neural Network (CNN), a Recurrent Neural Network (RNN), a boltzmann machine limited (RBM), a Deep Belief Network (DBN), a bi-directional recurrent deep neural network (BRDNN), or a deep Q network, or a combination of two or more thereof, but is not limited thereto. Additionally or alternatively, the artificial intelligence model may include software structures in addition to hardware structures.

The memory 130 may store various data used by at least one component of the electronic device 101 (e.g., the processor 120 or the sensor module 176). The various data may include, for example, software (e.g., program 140) and input data or output data for commands associated therewith. Memory 130 may include volatile memory 132 or nonvolatile memory 134.

The program 140 may be stored as software in the memory 130, and the program 140 may include, for example, an Operating System (OS) 142, middleware 144, or applications 146.

The input module 150 may receive commands or data from outside the electronic device 101 (e.g., a user) to be used by other components of the electronic device 101 (e.g., the processor 120). The input module 150 may include, for example, a microphone, a mouse, a keyboard, keys (e.g., buttons) or a digital pen (e.g., a stylus).

The sound output module 155 may output a sound signal to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. Speakers may be used for general purposes such as playing multimedia or playing a record. The receiver may be used to receive an incoming call. Depending on the embodiment, the receiver may be implemented separate from the speaker or as part of the speaker.

Display module 160 may visually provide information to the outside (e.g., user) of electronic device 101. The display device 160 may include, for example, a display, a holographic device, or a projector, and a control circuit for controlling a corresponding one of the display, the holographic device, and the projector. According to an embodiment, the display module 160 may comprise a touch sensor adapted to detect a touch or a pressure sensor adapted to measure the strength of the force caused by a touch.

The audio module 170 may convert sound into electrical signals and vice versa. According to an embodiment, the audio module 170 may obtain sound via the input module 150, or output sound via the sound output module 155 or headphones of an external electronic device (e.g., the electronic device 102) that is directly (e.g., wired) or wirelessly connected to the electronic device 101.

The sensor module 176 may detect an operational state (e.g., power or temperature) of the electronic device 101 or an environmental state (e.g., a state of a user) external to the electronic device 101 and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyroscope sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an Infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

Interface 177 may support one or more specific protocols that will be used to connect electronic device 101 with an external electronic device (e.g., electronic device 102) directly (e.g., wired) or wirelessly. According to an embodiment, interface 177 may include, for example, a High Definition Multimedia Interface (HDMI), a Universal Serial Bus (USB) interface, a Secure Digital (SD) card interface, or an audio interface.

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

The haptic module 179 may convert the electrical signal into a mechanical stimulus (e.g., vibration or motion) or an electrical stimulus that may be recognized by the user via his sense of touch or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrostimulator.

The camera module 180 may capture still images or moving images. According to an embodiment, the camera module 180 may include one or more lenses, an image sensor, an image signal processor, or a flash.

The power management module 188 may manage power supply to the electronic device 101. According to an embodiment, the power management module 188 may be implemented as at least part of, for example, a Power Management Integrated Circuit (PMIC).

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

The communication module 190 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (e.g., the electronic device 102, the electronic device 104, or the server 108) and performing communication via the established communication channel. The communication module 190 may include one or more communication processors capable of operating independently of the processor 120 (e.g., an Application Processor (AP)) and supporting direct (e.g., wired) or wireless communication. According to an 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 (PLC) module). A respective one of these communication modules may communicate with external electronic devices via a first network 198 (e.g., a short-range communication network such as bluetooth, wireless fidelity (Wi-Fi) direct, or infrared data association (IrDA)) or a second network 199 (e.g., a long-range communication network such as a conventional cellular network, a 5G network, a next-generation communication network, the internet, or a computer network (e.g., a LAN or wide-area network (WAN)). These various types of communication modules may be implemented as a single component (e.g., a single chip), or may be implemented as multiple components (e.g., multiple chips) separate from each other. The wireless communication module 192 may identify and authenticate the electronic device 101 in a communication network, such as the first network 198 or the second network 199, using user information (e.g., an International Mobile Subscriber Identity (IMSI)) stored in the user identification module 196.

The wireless communication module 192 may support a 5G network following a 4G network as well as next generation communication technologies (e.g., new Radio (NR) access technologies). The NR access technology can support enhanced mobile broadband (eMBB), large-scale machine type communications (mMTC), or ultra-reliable low-latency communications (URLLC). The wireless communication module 192 may support a high frequency band (e.g., millimeter wave band) to achieve, for example, a high data transmission rate. The wireless communication module 192 may support various techniques for ensuring performance over high frequency bands, such as, for example, beamforming, massive multiple-input multiple-output (massive MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, or massive antennas. The wireless communication module 192 may support various requirements specified in the electronic device 101, an external electronic device (e.g., electronic device 104), or a network system (e.g., second network 199). According to an embodiment, the wireless communication module 192 may support a peak data rate (e.g., 20Gbps or greater) for implementing eMBB, a lost coverage (e.g., 164dB or less) for implementing mMTC, or a U-plane delay (e.g., 0.5ms or less, or 1ms or less round trip for each of the Downlink (DL) and Uplink (UL)) for implementing URLLC.

The antenna module 197 may transmit signals or power to the outside of the electronic device 101 (e.g., an external electronic device) or receive signals or power from the outside of the electronic device 101 (e.g., an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a radiating element composed of a conductive material or conductive pattern formed in or on a substrate, such as a Printed Circuit Board (PCB). According to an embodiment, the antenna module 197 may include a plurality of antennas (e.g., array antennas). In this case, at least one antenna suitable for a communication scheme 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 (e.g., the wireless communication module 192). Signals or power may then be transmitted or received between the communication module 190 and the external electronic device via the selected at least one antenna. According to an embodiment, further components (e.g., a Radio Frequency Integrated Circuit (RFIC)) other than radiating elements may additionally be formed as part of the antenna module 197.

According to various embodiments, antenna module 197 may form a millimeter wave antenna module. According to embodiments, a millimeter-wave antenna module may include a printed circuit board, a Radio Frequency Integrated Circuit (RFIC) disposed on a first surface (e.g., a bottom surface) of the printed circuit board or adjacent to the first surface and capable of supporting a specified high frequency band (e.g., a millimeter-wave band), and a plurality of antennas (e.g., array antennas) disposed on a second surface (e.g., a top surface or a side surface) of the printed circuit board or adjacent to the second surface and capable of transmitting or receiving signals of the specified high frequency band.

At least some of the above components may be interconnected via an inter-peripheral communication scheme (e.g., bus, general Purpose Input Output (GPIO), serial Peripheral Interface (SPI), or Mobile Industrial Processor Interface (MIPI)) and communicatively communicate signals (e.g., commands or data) therebetween.

According to an embodiment, commands or data may be sent or received between the electronic device 101 and the external electronic device 104 via the server 108 connected to the second network 199. Each of the electronic device 102 or the electronic device 104 may be the same type of device as the electronic device 101 or a different type of device from the electronic device 101. According to an embodiment, all or some of the operations to be performed at the electronic device 101 may be performed at one or more of the external electronic device 102, the external electronic device 104, or the server 108. For example, if the electronic device 101 should automatically perform a function or service or should perform a function or service in response to a request from a user or another device, the electronic device 101 may request the one or more external electronic devices to perform at least part of the function or service instead of or in addition to the function or service, or the electronic device 101 may request the one or more external electronic devices to perform at least part of the function or service. The one or more external electronic devices that received the request may perform the requested at least part of the function or service or perform another function or another service related to the request and transmit the result of the performing to the electronic device 101. The electronic device 101 may provide the result as at least a partial reply to the request with or without further processing of the result. For this purpose, for example, cloud computing technology, distributed computing technology, mobile Edge Computing (MEC) technology, or client-server computing technology may be used. The electronic device 101 may provide ultra-low latency services using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may comprise an internet of things (IoT) device. Server 108 may be an intelligent server using machine learning and/or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199. The electronic device 101 may be applied to smart services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology or IoT-related technology.

The electronic device according to various embodiments may be one of various types of electronic devices. The electronic device may include, for example, a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a household appliance. According to the embodiments of the present disclosure, the electronic device is not limited to those described above.

It should be understood that the various embodiments of the disclosure and the terminology used therein are not intended to limit the technical features set forth herein to the particular embodiments, but rather include various modifications, equivalents or alternatives to the respective embodiments. For the description of the drawings, like reference numerals may be used to refer to like or related elements. It will be understood that a noun in the singular corresponding to a term may include one or more things unless the context clearly indicates otherwise. As used herein, each of the phrases such as "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" may include any or all possible combinations of the items listed with the corresponding one of the plurality of phrases. As used herein, terms such as "1 st" and "2 nd" or "first" and "second" may be used to simply distinguish one element from another element and not to limit the element in other respects (e.g., importance or order). It will be understood that if the terms "operatively" or "communicatively" are used or the terms "operatively" or "communicatively" are not used, then if an element (e.g., a first element) is referred to as being "coupled to," "connected to," or "connected to" another element (e.g., a second element), it is intended that the element can be directly (e.g., wired) connected to, wireless connected to, or connected to the other element via a third element.

As used in connection with various embodiments of the present disclosure, the term "module" may include an element implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "portion," or "circuitry"). A module may be a single integrated component adapted to perform one or more functions or a minimal unit or portion of the single integrated component. For example, according to an embodiment, a module may be implemented in the form of an Application Specific Integrated Circuit (ASIC).

The various embodiments set forth herein may be implemented as software (e.g., program 140) comprising one or more instructions stored in a storage medium (e.g., internal memory 136 or external memory 138) readable by a machine (e.g., electronic device 101). For example, under control of a processor, a processor (e.g., processor 120) of the machine (e.g., electronic device 101) may invoke and execute at least one of the one or more instructions stored in the storage medium with or without the use of one or more other components. This enables the machine to operate to perform at least one function in accordance with the at least one instruction invoked. The one or more instructions may include code generated by a compiler or code capable of being executed by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Wherein the term "non-transitory" merely means that the storage medium is a tangible device and does not include a signal (e.g., electromagnetic waves), but the term does not distinguish between data being semi-permanently stored in the storage medium and data being temporarily stored in the storage medium.

According to embodiments, methods according to various embodiments of the present disclosure may be included and provided in a computer program product. The computer program product may be used as a product for conducting transactions between sellers and buyers. The computer program product may be distributed in the form of a machine-readable storage medium, such as a compact disk read only memory (CD-ROM), or may be distributed (e.g., downloaded or uploaded) online via an application store, such as Play StoreTM, or may be distributed (e.g., downloaded or uploaded) directly between two user devices, such as smartphones. At least some of the computer program product may be temporarily generated if published online, or at least some of the computer program product may be stored at least temporarily in a machine readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a forwarding server.

According to various embodiments, each of the above-described components (e.g., a module or a program) may include a single entity or multiple entities, and some of the multiple entities may be separately provided in different components. According to various embodiments, one or more of the above components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., modules or programs) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform the one or more functions of each of the plurality of components in the same or similar manner as the corresponding one of the plurality of components performed the one or more functions prior to integration. According to various embodiments, operations performed by a module, a program, or another component may be performed sequentially, in parallel, repeatedly, or in a heuristic manner, or one or more of the operations may be performed in a different order or omitted, or one or more other operations may be added.

Fig. 2 is a block diagram 200 of the power management module 188 and the battery 189, in accordance with various embodiments. Referring to fig. 2, the power management module 188 may include a charging circuit 210, a power regulator 220, and a power meter 230. The charging circuit 210 may charge the battery 189 by using power supplied from an external power source to the electronic device 101. According to an embodiment, the charging circuit 210 may select a charging method (e.g., normal charging or quick charging) based on a type of an external power source (e.g., a power adapter, USB, or wireless charging), an amount of power available from the external power source (e.g., about 20 watts or more), or at least a portion of characteristics of the battery 189, and charge the battery 189 by using the selected charging method. The external power source may be connected to the electronic device 101 by wires, for example, through the connection terminal 178, or wirelessly through the antenna module 197.

For example, by adjusting the voltage level or current level of the power supplied from the external power source or battery 189, the power regulator 220 may generate a plurality of powers having different voltages or different current levels. The power regulator 220 may regulate the power of the external power source or battery 189 to a voltage or current level suitable for each of the several components included in the electronic device 101. According to an embodiment, the power regulator 220 may be implemented in the form of a Low Dropout (LDO) regulator or a switching regulator. The power meter 230 may measure usage state information of the battery 189 (e.g., capacity of the battery 189, the number of times of charge and discharge, voltage, or temperature).

The power management module 188 may determine state of charge information (e.g., lifetime, over-voltage, under-voltage, over-current, over-charge, over-discharge, over-temperature, short-circuit, or expansion) related to the charging of the battery 189 based at least in part on the measured state of use information using, for example, the charging circuit 210, the power regulator 220, or the power meter 230. The power management module 188 may determine whether the battery 189 is normal or abnormal based at least in part on the determined state of charge information. When it is determined that the state of battery 189 is abnormal, power management module 188 may adjust the charge to battery 189 (e.g., decrease the charge current or voltage, or stop the charge). According to an embodiment, at least some functions of the power management module 188 may be performed by an external control device (e.g., the processor 120).

According to an embodiment, the battery 189 may include a battery protection circuit (protection circuit module (PCM)) 240. The battery protection circuit 240 may perform one or more of various functions (e.g., a pre-blocking function) to prevent performance degradation or exhaustion of the battery 189. The battery protection circuit 240 may additionally or alternatively be configured as at least a portion of a Battery Management System (BMS) capable of performing various functions including cell balancing, battery capacity measurement, charge and discharge number measurement, temperature measurement, or voltage measurement.

According to an embodiment, at least a portion of the usage status information or the charge status information of the battery 189 may be measured by using a corresponding sensor (e.g., a temperature sensor), the power meter 230, or the power management module 188 in the sensor module 276. According to an embodiment, a corresponding sensor (e.g., a temperature sensor) in the sensor module 176 may be included as part of the battery protection circuit 140 or may be disposed near the battery 189 as a separate device.

An electronic device (e.g., electronic device 301 of fig. 3) according to various embodiments may include: a battery (e.g., battery 189 of fig. 1); a first charger (e.g., first charger 310 of fig. 3) comprising a switching regulator; a second charger (e.g., the second charger 320 of fig. 3) including a power converter that outputs an input current supplied from an external device (e.g., the external device 302 of fig. 3) by a specified multiple thereof, and that outputs an input voltage supplied from the external device 302 by a specified multiple thereof by decreasing the input voltage; and a processor (e.g., processor 120 of fig. 1), and processor 120 may: identifying a type of the external device 302 based on detecting that the external device 302 is connected in a wired manner; determining whether the external device 302 is a first charging device that can adjust the output voltage and the output current based on control of the processor 120; if the external device 302 is a first charging device, the battery 189 is charged by using the second charger 320; and if the external device 302 is not the first charging device but the second charging device having a fixed output voltage and output current, it is recognized whether the remaining amount of the battery 189 or the voltage is less than a specified value as a specified initial condition of the battery 189; if the battery 189 does not meet the specified initial condition, the battery 189 is charged by using the first charger 310; if the battery 189 meets the specified initial condition, the battery 189 is charged by using the second charger 320; monitoring whether a plurality of specified first conditions satisfy a state in which a current greater than an input current is input from a second charging device while the battery 189 is charged by a second charger 320, a state in which a battery voltage of the battery 189 is detected to be 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 specified first conditions is satisfied, the second charger 320 is deactivated and the battery 189 is charged by using the first charger 310.

According to an embodiment, the state in which the input current is smaller than the preconfigured value may include a state in which the input current is smaller than a current value reduced by a specified multiple for the maximum input current that can be supplied from the first charger 310 to the battery 189.

According to an embodiment, the second charging device may be a charging device that does not support Power Delivery (PD) communications and provides an output less than a specified reference power.

According to an embodiment, the second charging device may be a charging device that does not support a Programmable Power Supply (PPS) function.

According to an embodiment, if the external device 302 connected to the electronic device 301 is a second charging device and the specified initial condition is satisfied, the processor 120 may: configuring an input current obtained by applying an offset to a maximum output current that can be supplied from the second charging device; receiving a maximum output current from the second charging device by requesting the second charging device for the input current to which the offset is applied; and charges the battery 189 by controlling a maximum output current inputted from the second charging device to the second charger 320.

According to an embodiment, if the external device 302 is not the first charging device but a third charging device whose output voltage and output current are fixed, the processor 120 may: identifying whether battery 189 meets a specified initial condition; if the battery 189 does not meet the specified initial condition, the battery 189 is charged by using the first charger 310; if the battery 189 meets the specified initial condition, the battery 189 is charged by using the second charger 320; monitoring whether at least one of a plurality of specified second conditions is satisfied while charging battery 189 by second charger 320; and if at least one of the plurality of specified second conditions is satisfied, the second charger 320 is deactivated and the battery 189 is charged by using the first charger 310.

According to an embodiment, the third charging device may be a charging device that supports Power Delivery (PD) communications and provides an output greater than or equal to a specified reference power.

According to an embodiment, the plurality of specified second conditions may include: a state in which a current greater than the input current is input from the third charging device; in a final step portion of a plurality of charging steps for charging the battery 189, a state in which the battery voltage of the battery 189 is higher than a specified full charge voltage is detected; or a state in which a Constant Current (CC) mode in which the output current of the third charging device is fixed is switched to a Constant Voltage (CV) mode in which the output voltage of the third charging device is fixed.

According to an embodiment, if the third charging device is switched from the CC mode to the CV mode, the processor 120 may shorten an output period of the polling signal for identifying the current input to the second charger 320.

According to an embodiment, if the third charging device switches from CC mode to CV mode, the processor 120 may: comparing a value obtained by applying a specified multiple to the maximum input current supplied from the first charger 310 to the battery 189 with the input current input from the third charging device; and if the input current inputted from the third charging means is less than or equal to a value obtained by applying a specified multiple to the maximum input current, the second charger 320 is deactivated and the battery 189 is charged by using the first charger 310.

In a method of the electronic device 301 according to various embodiments, the electronic device 301 may include: a battery 189; a first charger 310 including a switching regulator; and a second charger 320 including a power converter that decreases an input current supplied from the external device 302 by a specified multiple and that increases an input voltage supplied from the external device 302 by a specified multiple, and the method may include: identifying a type of the external device 302 based on detecting that the external device 302 is connected in a wired manner; determining whether the external device 302 is a first charging device that can adjust the output voltage and the output current based on control of the electronic device 301; if the external device 302 is a first charging device, the battery 189 is charged by using the second charger 320; and if the external device 302 is not the first charging device but the second charging device having a fixed output voltage and output current, identifying whether the remaining amount or voltage of the battery 189 is less than a specified value that is a specified initial condition of the battery 189; if the battery 189 does not meet the specified initial condition, the battery 189 is charged by using the first charger 310; if the battery 189 meets the specified initial condition, the battery 189 is charged by using the second charger 320; monitoring whether a plurality of specified first conditions satisfy a state in which a current greater than an input current is input from a second charging device while the battery 189 is charged by a second charger 320, a state in which a battery voltage of the battery 189 is detected to be 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 specified first conditions is satisfied, disabling the second charger 320 and charging the battery 189 by using the first charger 310.

According to an embodiment, if the external device 302 connected to the electronic device 301 is a second charging device and satisfies a specified initial condition, it may further include: configuring an input current obtained by applying an offset to a maximum output current that can be supplied from the second charging device; receiving a maximum output current from the second charging device by requesting the second charging device for the input current to which the offset is applied; and charges the battery 189 by controlling a maximum output current input from the second charging device to the second charger 320.

According to an embodiment, if the external device 302 is not the first charging device but the third charging device whose output voltage and output current are fixed, it may further include: identifying whether battery 189 meets a specified initial condition; if the battery 189 does not meet the specified initial condition, the battery 189 is charged by using the first charger 310; if the battery 189 meets the specified initial condition, the battery 189 is charged by using the second charger 320; monitoring whether at least one of a plurality of specified second conditions is satisfied while charging battery 189 by second charger 320; and if at least one of the plurality of specified second conditions is satisfied, disabling the second charger 320 and charging the battery 189 by using the first charger 310.

According to an embodiment, if the third charging device is switched from the CC mode to the CV mode, it may further include shortening an output period of the polling signal for identifying the current input to the second charger 320.

According to an embodiment, if the third charging device switches from the CC mode to the CV mode, it may further include: comparing a value obtained by applying a specified multiple to the maximum input current supplied from the first charger 310 to the battery 189 with the input current input from the third charging device; and if the input current inputted from the third charging means is less than or equal to a value obtained by applying a specified multiple to the maximum input current, disabling the second charger 320 and charging the battery 189 by using the first charger 310.

The electronic device 301 shown in fig. 3 may include an embodiment that is at least partially similar to or different from the electronic device 101 shown in fig. 1.

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 an embodiment, the external device 302 may be a charging device (travel adapter (TA)) connected to the electronic device 301 through a wired connection and supplying a specified power to the electronic device 301. In an 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).

According to an embodiment, the external device 302 may be a charging device 302 that may adjust an output voltage and an output current, for example, a charging device 302 that supports a Programmable Power Supply (PPS) function, or a charging device 302 in which an output voltage and an input current are fixed (for example, a charging device 302 that does not support a PPS function). In the present disclosure, as an example of the charging device 302 capable of adjusting the output voltage or the output current, it is described as the charging device 302 supporting PPS function, but is not limited to the term PPS. For example, the charging device 302 supporting PPS function is only an example, and any charging device 302 may be used as long as it can adjust the output voltage or the output current.

According to an embodiment, when the external device 302 is a charging device 302 supporting PPS function, the external device 302 may change or adjust the output voltage or the output current differently based on control of the electronic device 301. For example, when the external device 302 is a charging device 302 supporting PPS function, the external device 302 may adjust the output voltage in a range of about 3V to about 21V. In the present disclosure, the external device 302 supporting PPS functions may be referred to as a "first charging device".

According to an embodiment, when the external device 302 is the charging device 302 that does not support PPS function, the external device 302 may supply a fixed output voltage or a fixed output current to the electronic device 301. According to an example, the external device 302 may be a charging device 302 that does not support PPS function, an Adaptive Fast Charging (AFC) device 302 that is a standard for samsung electronic TM, and may provide a fixed output voltage of about 9V. In the present disclosure, the external device 302 corresponding to the AFC charging device will be referred to as a "second charging device". According to the embodiment, the second charging device is not limited to the AFC charging device, and may be changed in various ways. For example, the second charging device may be the charging device 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 charging device may be charging device 302 that provides a fixed output voltage and fixed output current and provides an output that is less than a specified reference power. According to an embodiment, the specified reference power may be about 20W and the second charging device may be the charging device 302 providing less than about 20W. For example, the second charging device may be charging device 302 that provides a power of about 15W (the power is less than about 20W).

According to an embodiment, the external device 302 may be a Power Delivery (PD) 2.0 standard charging device 302 with a fixed Power Data Object (PDO) (e.g., a fixed output voltage or a fixed output current) and may provide a fixed output voltage, e.g., about 9V. In the present disclosure, the external device 302 corresponding to the PD 2.0 standard charging device 302 will be referred to as a "third charging device" according to an embodiment, the third charging device is not limited to the PD 2.0 standard charging device 302, and may be any charging device 302 as long as it does not support PPS function and supports PD standard (or PD communication). According to an embodiment, the third charging device may be the charging device 302 providing a fixed output voltage and a fixed output current and providing an output greater than or equal to a specified reference power. According to an embodiment, the specified reference power may be about 20W, and the third charging device may be charging device 302 that provides a power greater than or equal to about 20W. For example, the third charging device may provide an output of about 20W, or about 27W, about 45W, and/or about 100W (which is greater than about 20W). The third charging device may provide a fixed output voltage of any of about 5V, about 9V, about 15V, and/or about 20V.

According to an embodiment, the external device 302 may communicate with the electronic device 301 through MUIC (e.g., MUX IC) 323 and/or USB communication module (e.g., CCPD module) 322 of the electronic device 301. For example, the external device 302 may be connected to a USB communication module (e.g., CCPD module) 322 of the electronic device 301 through a USB C-terminal.

According to an 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, MUIC (e.g., a MUX IC) 323, a processor 120, a battery 189, or a power meter 230.

According to an 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 through a designated system interface. For example, the specified system interface may include an inter-integrated circuit (I2C), but the disclosure may not be limited thereto.

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

According to an embodiment, the second charger 320 may be a direct charger supporting a switched cap (capacitor) voltage divider type direct charging (hereinafter, "DC charging"). According to an embodiment, the second charger 320 may include a power converter that decreases an input voltage input from the external device 302 by a specified multiple and increases an input current input from the external device 302 by a specified multiple. According to an embodiment, the second charger 320 may include a 2:1 voltage divider that reduces the input voltage to 1/2 and doubles the input current. According to various embodiments, the second charger 320 is not limited to including a 2:1 voltage divider, but may be differently designed to include a 3:1 voltage divider that reduces the input voltage by 1/3, increases the input current by three times, or a 4:1 voltage divider that reduces the input voltage by 1/4 and increases the input current by four times.

The USB communication module 322 may be referred to as a "CCPD module" and may perform a type C detection function that identifies the Rp value through CC terminal, PD dual-phase-marker (BMC) communication, or PPS communication of the charging device 302. The Rp value may be an identification value for identifying the cable type of the charging device 302. After performing PDBMC communications with the external device 302, the electronic device 301 may receive a specified power from the external device 302 having a voltage that is boosted from about 5V to about 9V.

According to an embodiment, when the external device 302 is a second charging device (e.g., AFC charging device), the electronic device 301 may perform data line communication with the external device 302 through MUIC (e.g., MUX IC) 323, and identify the type of the charging device 302. According to an embodiment, after performing data line communication with the external device 302, the electronic device 301 may receive a specified power having a voltage of about 9V from the external device 302.

According to an embodiment, when the electronic device 301 and the external device 302 are connected through a wire, the processor 120 may identify the type of the external device 302. For example, when the electronic device 301 and the external device 302 are connected by a wire, the processor 120 may determine whether the external device 302 is a charging device 302 supporting PPS functions.

According to an embodiment, when the external device 302 is a charging device 302 supporting PPS functions (e.g., when the external device 302 is a first charging device), the processor 120 may charge the battery 189 by controlling the second charger 320. According to an embodiment, when the external device 302 is the charging device 302 supporting PPS function, the processor 120 may dynamically change the current configuration value of the second charger 320 based on the remaining amount (or battery level) of the battery 189 or the input current.

According to an embodiment, when the external device 302 is a charging device 302 that does not support PPS function (e.g., when the external device 302 is a second charging device or a third charging device), the processor 120 may charge the battery 189 for at least a period of time by charging the battery 189 using the second charger 320, and charge the battery 189 by using the first charger 310 for the remaining period of time in which the battery 189 is charged.

Fig. 4 is a flowchart showing an operation of the electronic apparatus 301 to charge the battery 189 according to the embodiment.

At least some of the operations shown in fig. 4 may be omitted. At least some of the operations mentioned with reference to other figures in this disclosure may additionally be inserted before or after at least some of the operations shown in fig. 4.

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

Hereinafter, an operation of the electronic device 301 to charge the battery 189 according to the embodiment will be described with reference to fig. 4.

In operation 410, the electronic device 301 according to an embodiment may detect connection of the charging device 302. For example, the electronic device 301 may detect whether the charging device 302 is connected through a wired connection.

In operation 420, when the connection of the charging device 302 is detected, the electronic device 301 according to the embodiment may identify the type of the charging device 302. For example, the electronic device 301 may perform a type C detection operation to identify the Rp value of the charging device 302 through the USB communication module 322. The electronic device 301 may identify whether the charging device 302 is a first charging device supporting PPS function or a charging device (e.g., a second charging device or a third charging device) 302 not supporting PPS function based on the type C detection operation. In an embodiment, the electronic device 301 may identify that the charging device 302 is a second charging device (e.g., an AFC charging device) having a fixed output voltage and a fixed output current based on communicating with a data line of the charging device 302 through MUIC (e.g., MUX IC) 323.

In operation 430, the electronic device 301 according to an embodiment may determine whether the type of the charging device 302 connected through the wire supports PPS functions. For example, the electronic device 301 may determine whether the charging device 302 is the first charging device supporting PPS functionality.

According to an embodiment, when the charging device 302 is a first charging device supporting PPS functionality (e.g., yes in operation 430), the electronic device 301 may perform operation 440.

According to an embodiment, when the charging device 302 is a charging device 302 (e.g., a second charging device or a third charging device) that does not support PPS function (e.g., the result of operation 430 is no), the electronic device 301 may perform operation 441.

In operation 440, when the charging device 302 is the first charging device 302 supporting PPS function (e.g., the result of operation 430 is yes), the electronic device 301 according to the embodiment may determine the input current and the input voltage based on the battery voltage. The processor may transmit the determined input current and input voltage to the second charger 320 through a designated system interface, such as an inter-integrated circuit (I2C). According to an embodiment, the second charger 320 may perform PPS communication with the first charging device through the USB communication module 322, and receive power corresponding to the determined input current and input voltage from the first charging device. When the battery voltage increases as power is received from the first charging device, the processor may charge battery 189 while adjusting the input current and input voltage by using PPS functions of charging device 302.

According to an embodiment, the processor may charge the battery 189 in a Constant Current (CC) mode or charge the battery 189 in a Constant Voltage (CV) mode according to a battery voltage. The processor may control the current supplied to battery 189 in CC mode to maintain a preconfigured value. The processor may control the voltage used to charge battery 189 in CV mode to maintain a preconfigured value.

In operation 441, when the charging device 302 is the charging device 302 (e.g., the second charging device or the third charging device) that does not support the PPS function (e.g., the result of operation 430 is no), the electronic device 301 according to the embodiment may determine whether the battery 189 satisfies the specified initial condition. For example, the specified initial condition may include a condition that the remaining amount of battery 189 (e.g., battery level) is less than a specified percentage value, and/or a condition that the battery voltage is less than a specified voltage. According to an embodiment, the electronic device 301 may determine that the battery 189 satisfies a specified initial condition when the remaining amount of the battery 189 is less than a specified percentage value (e.g., about 5%), and/or when the battery voltage is less than a specified voltage (e.g., about 3.6V). For example, when the remaining amount of the battery 189 is less than 5%, the electronic device 301 may determine that the specified initial condition is satisfied. For example, when the battery voltage is less than 3.6V, the electronic device 301 may determine that the specified initial condition is satisfied.

According to an embodiment, when the battery 189 satisfies a specified initial condition (e.g., yes result of operation 441), the electronic device 301 may perform operation 450.

According to an embodiment, when battery 189 does not satisfy the specified initial condition (e.g., no result of operation 441), electronic device 301 may perform operation 470.

In operation 450, according to an embodiment, when the battery 189 satisfies a specified initial condition (e.g., the result of operation 441 is yes), the electronic device 301 according to an embodiment may connect the second charger 320 and the charging device 302 and charge the battery 189, and charge the battery 189 by using the second charger 320 using a direct charging ("DC charging") method.

In operation 460, the electronic device 301 according to the embodiment may monitor whether a specified condition is satisfied while performing DC charging by the charging device 302 (e.g., the second charging device or the third charging device) that does not support the PPS function. For example, the specified condition may include a state in which the charging device 302 that does not support the PPS function, that is, the charging device 302 that provides a fixed output voltage and a fixed output current (e.g., the second charging device or the third charging device), is no longer capable of DC charging, or an abnormal state in which a problem such as fire may occur. A detailed description of the specified conditions will be described later in connection with tables 1 and 3 included in the present disclosure.

According to an embodiment, when DC charging is performed by the charging device 302 (e.g., the second charging device or the third charging device) that does not support the PPS function, the electronic device 301 may perform operation 470 when a specified condition is satisfied (e.g., the result of operation 460 is yes).

According to an embodiment, when DC charging is performed by the charging device 302 (e.g., the second charging device or the third charging device) that does not support the PPS function, the electronic device 301 may maintain the operation 450 when the specified condition is not satisfied (e.g., the result of the operation 460 is "no").

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

Fig. 5 is a flowchart showing the operation of the electronic device 301 according to the embodiment when the second charging device is connected.

At least some of the operations shown in fig. 5 may be omitted. At least some of the operations mentioned with reference to other figures in this disclosure may additionally be inserted before or after at least some of the operations shown in fig. 5.

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

Hereinafter, the operation of the electronic device 301 according to the embodiment when the second charging device is connected will be described with reference to fig. 5.

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

In operation 520, the electronic device 301 according to the embodiment may receive power having a specified voltage from the charging device 302 after recognizing that the charging device 302 is the second charging device. For example, when the second charging device is an AFC charging device, the electronic device 301 may receive power having a voltage of about 9V and a current of about 1.65A from the second charging device.

In operation 530, the electronic device 301 according to an embodiment may determine whether the battery 189 is in a specified initial condition. For example, the specified initial condition may include a condition that the remaining amount of battery 189 (e.g., battery level) is less than a specified percentage value, and/or a condition that the battery voltage is less than a specified voltage. According to an embodiment, the electronic device 301 may determine that the battery 189 satisfies a specified initial condition when the remaining amount of the battery 189 is less than a specified percentage value (e.g., about 5%), and/or when the battery voltage is less than a specified voltage (e.g., about 3.6V). For example, when the remaining amount of the battery 189 is less than 5%, the electronic device 301 may determine that the specified initial condition is satisfied. For example, when the battery voltage is less than 3.6V, the electronic device 301 may determine that the specified initial condition is satisfied. Operation 530 may be similar to operation 441 of fig. 4.

According to an embodiment, when battery 189 satisfies a specified initial condition (e.g., yes result of operation 530), electronic device 301 may perform operation 541.

According to an embodiment, when battery 189 does not satisfy the specified initial condition (e.g., no result of operation 530), electronic device 301 may perform operation 542.

In operation 541, the electronic device 301 according to an embodiment may activate the second charger 320 and deactivate the first charger 310. For example, the electronic device 301 may control the second charging device to connect to the second charger 320 and prevent connection between the second charging device and the first charger 310.

In operations 550 and 560, the electronic device 301 according to the embodiment may configure an input current to which an offset is applied and charge the battery 189 with DC based on the configured input current. According to an embodiment, the processor may configure the input current by applying an offset to the maximum output current that the second charging device may provide. The processor may transmit information about an input current resulting from applying an offset to the maximum output current to the second charger 320, and the second charger 320 may request the offset-applied input current from the second charging device.

According to an embodiment, when an input current having a value exceeding the maximum output current is requested from the second charger 320, the second charging device may be in a "maximum current output state" that provides the electronic device 301 with the maximum output current that the second charger may provide. The maximum current output state of the second charging device to provide the maximum output current to the electronic device 301 is similar to the "current limit mode" of the charging device 302 supporting the PD protocol, and thus the maximum current output state of the second charging device may be referred to as the "current limit mode".

According to an embodiment, the offset may be configured in consideration of manufacturing variations or each type of margin of the second charging device, so that the second charging device may operate in the "current limiting mode". For example, considering manufacturing variations of the second charging device or a margin by type, it may be assumed that the maximum output current of the second charging device is in the range of about 1.5A to about 1.8A. The electronic device 301 may be configured with an offset such that the second charging device may operate in the current limiting mode regardless of manufacturing variances of the second charging device and/or tolerances of each type. For example, assuming that the maximum output current of a particular second charging device is about 1.65A, the offset may be configured to be about 0.3A, and the input current to which the offset is applied may be about 1.95A. In this case, the processor may transmit information about 1.95A to the second charger 320, and the second charger 320 may request an input current of about 1.95A from the second charging device. The second charger 320, which has a maximum output current configured to be about 1.65A, may operate in a "current limit mode" in response to receiving a request for an input current of about 1.95A, and may supply a maximum output current of about 1.65A to the electronic device 301. The second charger 320 of the electronic device 301 may charge the battery 189 with DC based on a maximum output current of about 1.65A from the second charging device. In the present disclosure, an offset value of about 0.3A is merely an example, and various changes may be made without being limited thereto.

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

TABLE 1

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 state of charge switching from the CC mode to the CV mode. According to an embodiment, the plurality of first conditions may include a state in which an input current regulation loop is present. The input current regulation loop may be in a state in which an overcurrent is input from the second charging device. For example, assuming that the second charger 320 requests an input current of about 1.95A to which an offset is applied to the second charging device, a current greater than the input current may be input from the second charging device. According to the embodiment, when a current larger than the input current is input from the second charging device, the electronic device 301 may determine that an abnormal state in which an overcurrent has occurred from the second charging device has occurred. The over-current may be caused by aging or depletion of the second charging device. According to an example, in order to prevent a problem such as fire, when a current greater than the input current is input from the second charging device while DC charging is performed by using the second charging device, the electronic device 301 may determine that the first condition for stopping DC charging by using the second charging device is satisfied and perform operation 580.

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

According to an embodiment, the plurality of first conditions may include a state in which a state of charge of the second charging device is switched from CC mode to CV mode. According to an embodiment, when the state of charge is switched from the CC mode to the CV mode, the processor may shorten the period of the polling signal transmitted to the second charger 320 to identify the input current. For example, the processor may configure the output period of the polling signal to be about 10 seconds when the state of charge is in the CC mode, and the polling output period may be configured to be less than about 10 seconds (such as 5 seconds) when the state of charge is switched from the CC mode to the CV mode.

According to an embodiment, when the state of charge is switched from the CC mode to the CV mode, the processor 120 may maintain DC charge for a specified time (e.g., period 602 of fig. 6) from a time when the polling output period is changed from about 10 seconds to about 5 seconds, for example, and identify a state in which the input current satisfies the input current is less than the preconfigured value while maintaining DC charge. The state in which the input current is less than the preconfigured value may include a state in which the input current is less than a current value reduced by a specified multiple (e.g., 1/2, 1/3, and 1/4) for the maximum input current that can be supplied from the first charger 310 to the battery 189.

According to an example, the processor may compare a current value (e.g., a current value reduced by a specified multiple) with an input current input from the second charging device, the current value being a maximum input current that can be supplied from the first charger 310 (e.g., a switching charger) to the battery 189 multiplied by the specified multiple (e.g., 1/2, 1/3, and 1/4). According to an example, the specified multiple may be a value corresponding to a multiple for increasing the input current in the second charger 320. For example, when the second charger 320 includes a 2:1 voltage divider that reduces the input voltage by 1/2 and doubles the input current, the specified multiple may be 1/2. In this case, the processor may compare the maximum input current that can be supplied from the first charger 310 (e.g., a switching charger) to the battery 189 with the input current input from the second charging device multiplied by a specified multiple of 1/2. For example, assuming that the maximum input current that can be supplied to the battery 189 from the first charger 310 (e.g., a switched charger) is about 3A, the processor may monitor whether the input current from the second charging device is less than or equal to 1.5A, which is a factor of 1/2 applied to about 3A. According to an example, when the input current inputted from the second charging device is less than or equal to 1.5A (the value is obtained by applying a 1/2 multiple to about 3A), the processor may consider that charging the battery 189 by using the first charger 310 is possible or DC charging is no longer possible, and may perform operation 580.

According to an embodiment, the electronic device 301 may 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 charging device is less than or equal to the maximum input current that may be supplied from the first charger 310 (e.g., a switching charger) to the battery 189 multiplied by a specified multiple (e.g., 1/2). According to an embodiment, the electronic device 301 may increase the charging speed of the battery 189 by extending the period of time for charging the battery 189 in the CC mode.

In operation 580, the electronic device 301 according to the embodiment may stop DC charging for charging the battery 189 by using the second charger 320.

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

Fig. 6 is a graph comparing a charging curve of the electronic device 310 according to the embodiment and a charging curve according to a comparative example when the second charging device is connected.

In fig. 6, a graph 610 may represent a charging curve for charging the battery 189 when the electronic device 301 according to the embodiment is connected to the second charging device.

In fig. 6, a curve 620 may represent a charging curve for charging the battery 189 when the electronic device 301 according to the comparative example is connected to the second charging device. The electronic device 301 according to the comparative example may be the electronic device 301 that charges the battery 189 by using the first charger 310 when the second charging device that does not support the PPS function is connected.

Referring to the graph 610, a charging curve for charging the battery 189 when the electronic device 301 is connected to the second charging device may include a period 601, a period 602, and a period 603 for DC charging the battery 189 by using the second charger 320, and a period 604 for general charging of the battery 189 by using the switching charger of the first charger 310.

In period 601, the second charging device may operate in a "current limit mode" when the electronic device 301 according to an embodiment is configured to apply an offset input current. Thus, the second charging device may supply the maximum output current of the second charging device, e.g. a current of 1.65A, to the electronic device 301. According to an embodiment, the electronic device 301 may charge the battery 189 with DC based on the maximum output current of the second charging device, and the charging mode may be a CC mode in which the input current is maintained at a constant value.

In period 602, the electronic device 301 according to an embodiment may detect that the state of charge of the second charging device is switched from CC mode to CV mode. For example, if the output voltage of the second charging device detected by Vbus is fixed at about 9V and the input current provided by the second charging device decreases, the electronic device 301 may determine that the state of charge of the second charging device switches from CC mode to CV mode. According to an embodiment, when the state of charge is switched from CC mode to CV mode, the electronic device 301 may shorten the period of the polling signal transmitted to the second charger 320 to identify the input current.

In period 603, the electronic device 301 according to the embodiment may compare the maximum input current that may be supplied from the first charger 310 (e.g., a switching charger) to the battery 189 with the input current input from the second charging device by a specified multiple (e.g., 1/2, 1/3, and 1/4). According to an embodiment, the processor may perform DC charging by using the second charger 320 until an input current inputted from the second charging device is less than or equal to 1.5A, the value being obtained by applying a multiple of 1/2 to about 3A. According to an embodiment, in the period 603, the state of charge may be a CC mode for charging the battery 189 while maintaining a current lower than the maximum output current of the second charging device.

In the period 601, the period 602, and the period 603, the electronic apparatus 301 according to the comparative example may supply an output current configured to be lower than the maximum output current of the second charging apparatus to the electronic apparatus 301, and the electronic apparatus 301 according to the comparative example may operate in the CC mode.

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

In the period 604, the electronic apparatus 301 according to the comparative example may charge the battery 189 in the CV mode similarly to the electronic apparatus 301 according to the embodiment.

Unlike the electronic device 301 according to the comparative example, the electronic device 301 according to the embodiment may increase a charging period for charging the battery 189 in the CC mode to increase a charging speed of the battery 189, and may perform DC charging for a part of the period during the period for charging the battery 189 to improve charging efficiency and heat generating performance.

Fig. 7 is a graph comparing heat generation of the electronic device 301 according to the embodiment and heat generation of the electronic device 301 according to the comparative example when the second charging device is connected.

In fig. 7, a graph 710 is a graph measuring heat generated on the surface of the electronic device 301 when the electronic device 301 according to the comparative example of fig. 6 charges the battery 189 by using the second charging device.

In fig. 7, a graph 720 is a graph measuring heat generated on the surface of the electronic device 301 when the electronic device 301 according to the embodiment of fig. 6 charges the battery 189 by using the second charging device.

Comparing the graph 710 and the graph 720, it can be recognized that the electronic device 301 according to the embodiment generates less heat than the electronic device 301 according to the comparative example by performing DC charging for a part of the period in which the battery 189 is charged. For example, the electronic apparatus 301 according to the embodiment performs DC charging for a part of the period in which the battery 189 is charged, so that the surface heating temperature is reduced by about 0.2 ℃ as compared with the electronic apparatus 301 according to the comparative example.

Fig. 8 is a flowchart showing the operation of the electronic device 301 according to the embodiment when the third charging device is connected.

At least some of the operations shown in fig. 8 may be omitted. At least some of the operations mentioned with reference to other figures in this disclosure may additionally be inserted before or after at least some of the operations shown in fig. 8.

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

Hereinafter, the operation of the electronic device 301 according to the embodiment when the third charging device is connected will be described with reference to fig. 8.

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

In operation 810, the electronic device 301 according to an embodiment may perform PD dual phase marker code (BMC) communication through a USB communication module (e.g., CCPD module) 322 and receive a specified power having a voltage boosted from about 5V to about 9V from a third charging device.

In operation 830, the electronic device 301 according to an embodiment may determine whether the battery 189 is in a specified initial condition. For example, the specified initial condition may include a condition that the remaining amount of battery 189 (e.g., battery level) is less than a specified percentage value, and/or a condition that the battery voltage is less than a specified voltage. According to an embodiment, the electronic device 301 may determine that the battery 189 satisfies a specified initial condition when the remaining amount of the battery 189 is less than a specified percentage value (e.g., about 5%), and/or when the battery voltage is less than a specified voltage (e.g., about 3.6V). For example, when the remaining amount of the battery 189 is less than 5%, the electronic device 301 may determine that the specified initial condition is satisfied. For example, when the battery voltage is less than 3.6V, the electronic device 301 may determine that the specified initial condition is satisfied. Operation 830 may be similar to operation 441 of fig. 4 or operation 530 of fig. 5.

According to an embodiment, when battery 189 satisfies a specified initial condition (e.g., yes result of operation 830), electronic device 301 may perform operation 841.

According to an embodiment, when battery 189 does not satisfy the specified initial condition (e.g., no result of operation 830), electronic device 301 may perform operation 842.

In operation 841, the electronic device 301 according to the embodiment may activate the second charger 320 and deactivate the first charger 310. For example, the electronic device 301 may control the second charging device to connect to the second charger 320 and prevent connection between the second charging device and the first charger 310. Operation 841 may be similar to operation 541 of fig. 5.

In operation 850, the electronic device 301 according to the embodiment may configure the input current in consideration of the charging step. According to an embodiment, the third charging device may be a charging device 302 that provides a power greater than or equal to a specified reference power (e.g., about 20W), unlike the second charging device. For example, the third charging device may provide an output of one of about 20W, or about 27W, about 45W, and/or about 100W (which is greater than about 20W). Unlike the second charger, the third charging device has a relatively high output power. Accordingly, when it is detected that the third charging device is connected, the electronic device 301 according to the embodiment may configure the input current by dividing the input current into a plurality of charging steps. According to an embodiment, the input current of each of the plurality of charging steps may be determined based on a preconfigured input current value of each step to control the charging device 302 (e.g., the first charger) supporting PPS functions. For example, the processor may include a battery 189 driver (not shown) for charging the battery 189, and the battery 189 driver may store a step-by-step input current value for step-by-step DC charging by using the PPS function. According to an embodiment, the processor may identify a maximum drive current of the third charging device in operation 810 of performing PD dual phase marker code (BMC) communication through a USB communication module (e.g., CCPD module) 322. According to an embodiment, the electronic device 301 may compare a stepwise input current value for stepwise DC charging by using the PPS function with a maximum driving current of the third charging device, and configure the input current based on the comparison result.

According to an embodiment, the electronic device 301 may apply an operation of multiplying the input current value mapped to each step by a specified multiple (e.g., 2) so that the input current value of each step preconfigured to use the PPS function is greater than the maximum driving current of the third charging device.

TABLE 2

Referring to the second column of table 2, the input current value preconfigured to correspond to the first step may be about 2A. The electronic device 301 may configure the converted input current of about 4A by multiplying about 2A by a specified multiple of 2. For example, the third charging device may be a PD 2.0 charging device 302 that provides a fixed value of 9V/2.75A, and may operate in a "current limit mode" as required for a converted input current of about 4A. Accordingly, the third charging device may supply the maximum driving current of 2.75A to the electronic device 301. The electronic device 301 may perform DC charging based on the maximum input drive current of 2.75A. Referring to the third column of table 2, the input current value preconfigured to correspond to the second step may be about 1.5A. The electronic device 301 may configure the converted input current of about 3A by multiplying about 1.5A by a specified multiple of 2. For example, the third charging device may be a PD 2.0 charging device 302 that provides a fixed value of 9V/2.75A, and may operate in a "current limit mode" as required for a converted input current of about 3A. Accordingly, the third charging device may supply the maximum driving current of 2.75A to the electronic device 301. The electronic device 301 may perform DC charging based on the maximum input drive current of 2.75A.

Referring to the fourth column of table 2, the input current value preconfigured to correspond to the third step may be about 1A. The electronic device 301 may configure the converted input current of about 2A by multiplying about 1A by a specified multiple of 2. For example, the third charging device may be a PD 2.0 charging device 302 that provides a fixed value of 9V/2.75A, and may provide 2A to the electronic device 301 as required for a converted input current of about 2A. The electronic device 301 may perform DC charging based on the 2A input.

In operation 860, the electronic device 301 according to the embodiment may perform DC charging for each configured step. According to an embodiment, in operation 850, the electronic device 301 may request an input current determined by the processor from the third charging device and perform DC charging based on power received from the third charging device.

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

TABLE 3

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 a final step, or a state of charge switching from the CC mode to the CV mode. According to an embodiment, the plurality of second conditions may comprise a state in which an input current regulation loop is present. The input current regulation loop may be in a state in which an overcurrent is input from the third charging device. For example, assuming that the second charger 320 requests an input current of about 2.75A from the third charging device, a current greater than the input current may be input from the third charging device. According to the embodiment, when a current larger than the input current is input from the third charging device, the electronic device 301 may determine that an abnormal state in which an overcurrent has occurred from the third charging device has occurred. The over-current may be caused by aging or exhaustion of the third charging device. According to an example, in order to prevent a problem such as fire, when a current greater than the input current is input from the third charging device while DC charging is performed by using the third charging device, the electronic device 301 may determine that the second condition for stopping DC charging by using the third charging device is satisfied and perform operation 880.

According to an embodiment, the plurality of second conditions may include a state in which a battery voltage regulation loop occurs in a final step. When the battery 189 is DC-charged stepwise by using the third charging device, the battery voltage regulation loop may be in an overvoltage state. For example, the reference voltage of battery 189 preconfigured to correspond to the last step may be configured to be the full charge voltage of battery 189 (e.g., about 4.4V). According to an embodiment, when detecting that the battery voltage is about 4.6V, which is greater than the reference voltage (e.g., the full charge voltage) of the battery 189 preconfigured to correspond to the last step, the electronic device 301 may determine that the battery voltage regulating loop has occurred and is in an abnormal state. According to an embodiment, based on the battery voltage regulation loop appearing in the last step, the electronic device 301 may determine that the second condition for stopping DC charging by using the third charging device is satisfied, and perform operation 880.

According to an embodiment, when the battery voltage regulation loop occurs in a specific step other than the last step, 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. For example, the electronic device 301 may configure the step for charging the battery 189 by dividing the steps into a first step, a second step, and a third step. According to an embodiment, the electronic device 301 may monitor whether the battery voltage exceeds a reference voltage (e.g., about 4.1V) of the first battery 189 corresponding to the first step portion during DC charging in the first step portion. When the battery voltage exceeds the reference voltage (e.g., about 4.1V) of the first battery 189 corresponding to the first step portion, the electronic device 301 may determine that a battery voltage regulation loop has occurred. When the battery voltage regulation loop is present in the first step portion, the electronic device 301 may begin the second step by changing a first input current (e.g., about 5.5A) corresponding to the first step portion to a second input current (e.g., about 4A) corresponding to the second step portion. According to an embodiment, the electronic device 301 may monitor whether the battery voltage exceeds the reference voltage (e.g., about 4.25V) of the second battery 189 corresponding to the second step portion while DC charging in the second step portion. When the battery voltage exceeds the reference voltage (e.g., about 4.25V) of the second battery 189 corresponding to the second step portion, the electronic device 301 may determine that the battery voltage regulation loop has occurred. When the battery voltage regulation loop is present in the second step portion, the electronic device 301 may start the third step by changing the second input current (e.g., about 4A) corresponding to the second step portion to a third input current (e.g., about 3.5A) corresponding to the third step portion.

In the present disclosure, the step of charging the battery 189 by the electronic device 301 is not limited to the first step, the second step, and the third step, and various changes may be made. For example, the electronic device 301 may charge the battery 189 by dividing the steps into two or more steps.

According to an embodiment, the plurality of second conditions may include a state in which a state of charge of the third charging device is switched from the CC mode to the CV mode. According to an embodiment, when the state of charge is switched from the CC mode to the CV mode, the processor may shorten the period of the polling signal transmitted to the second charger 320 to identify the input current. For example, the processor may configure the output period of the polling signal to be about 10 seconds when the state of charge is in the CC mode, and the polling output period may be configured to be less than about 10 seconds (such as 5 seconds) when the state of charge is switched from the CC mode to the CV mode.

According to an example, the processor may compare the maximum input current that may be supplied from the first charger 310 (e.g., a switching charger) to the battery 189 with the input current input from the third charging device by a specified multiple (e.g., 1/2, 1/3, and 1/4). According to an example, the specified multiple may be a value corresponding to a multiple for increasing the input current in the second charger 320. For example, when the second charger 320 includes a 2:1 voltage divider that reduces the input voltage by 1/2 and doubles the input current, the specified multiple may be 1/2. In this case, the processor may compare the maximum input current that can be supplied from the first charger 310 (e.g., a switching charger) to the battery 189 with the input current input from the third charging device multiplied by a specified multiple of 1/2. For example, assuming that the maximum input current that can be supplied from the first charger 310 (e.g., a switching charger) to the battery 189 is about 3A, the processor may monitor whether the input current from the third charging device is less than or equal to 1.5A, which is a factor of 1/2 applied to about 3A. According to an example, when the input current inputted from the third charging device is less than or equal to 1.5A (the value is obtained by applying a 1/2 multiple to about 3A), the processor may consider that charging the battery 189 by using the first charger 310 is possible or DC charging is no longer possible, and may perform operation 880.

According to an embodiment, when any of the plurality of second conditions is not satisfied (e.g., no outcome of operation 870), the electronic device 301 may perform operation 860 again.

According to an embodiment, the electronic device 301 may 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 charging device is less than or equal to the maximum input current that may be supplied from the first charger 310 (e.g., a switching charger) to the battery 189 multiplied by a specified multiple (e.g., 1/2). According to an embodiment, the electronic device 301 may increase the charging speed of the battery 189 by extending the period of time for charging the battery 189 in the CC mode.

In operation 880, the electronic device 301 according to the embodiment may stop DC charging for charging the battery 189 by using the second charger 320.

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

Fig. 9 is a graph showing a charging curve of the electronic device 301 according to the embodiment when the third charging device is connected.

Referring to fig. 9, when the electronic device 301 according to the embodiment is connected to the third charging device, a charging curve for charging the battery 189 may be divided into a plurality of charging steps. For example, the electronic device 301 may configure the steps for charging the battery 189 by dividing the steps into a first step, a second step, and a third step. 901 of fig. 9 may indicate a charging curve according to the first step. 902 of fig. 9 may indicate a charging curve according to the second step. 903 of fig. 9 may indicate a charging curve according to a third step as a final step.

In the first step, the electronic device 301 according to the embodiment may charge the battery 189 with DC based on the maximum output current of the third charging device, and in this case, the charging mode may be a CC mode in which the input current is maintained at a constant value. For example, the maximum drive current of the third charging device may be about 5.5A.

When the battery voltage regulation loop occurs during the DC charging in the first step, the electronic device 301 according to the embodiment may change the input current requested to the third charging device to a second input current (e.g., about 4A) lower than the maximum output current. When the input current is changed to the second input current, the DC charging according to the second step may be started.

In the second step, the electronic device 301 according to the embodiment may receive a designated power corresponding to the second input current from the third charging device and charge the battery 189 with DC based on the designated power. In this case, the charging mode may be a CC mode in which the input current is maintained at a constant value.

When the battery voltage regulation loop occurs during the DC charging in the second step, the electronic device 301 according to the embodiment may change the input current requested to the third charging device to a third input current (e.g., about 3.5A) lower than the second input current. When the input current is changed to the third input current, the DC charging according to the third step may be started.

In the third step, the electronic device 301 according to the embodiment may receive a designated power corresponding to the third input current from the third charging device and charge the battery 189 with DC based on the designated power. According to an embodiment, the third step may comprise: a first sub-portion 903a which operates in the CC mode in which the input current is maintained at a constant value; a second sub-section 903b in which an input current from the second charging device is charged with DC until the input current is equal to or less than a maximum input current that can be supplied from the first charger 310 (e.g., a switching charger) to the battery 189 multiplied by a specified multiple (e.g., 1/2), and which operates in CV mode; and a third sub-section 903c in which, based on an input current from the second charging device being equal to or less than a maximum input current that can be supplied from the first charger 310 (e.g., a switching charger) to the battery 189 multiplied by a specified multiple (e.g., 1/2), DC charging is stopped and the battery 189 is charged by using the first charger 310.

Claims

1. An electronic device, comprising:

A battery;

A first charger including a switching regulator;

A second charger including a power converter that outputs by increasing an input current supplied from an external device by a specified multiple, and outputs by decreasing an input voltage supplied from the external device by the specified multiple; and

A processor, wherein the processor is configured to:

identifying a type of the external device based on detecting that the external device is connected in a wired manner;

Determining whether the external device is a first charging device capable of adjusting an output voltage and an output current based on control of the processor;

Charging the battery by using the second charger in a case where the external device is the first charging device;

in the case where the external device is not the first charging device but a second charging device having a fixed output voltage and a fixed output current, identifying whether the battery satisfies a specified initial condition that the remaining capacity or voltage of the battery is less than a specified value;

Charging the battery by using the first charger in a case where the battery does not satisfy a specified initial condition;

charging the battery by using the second charger in a case where the battery satisfies a specified initial condition;

Monitoring whether a plurality of specified first conditions are satisfied while charging the battery by the second charger: a state in which a current input from the second charging device is greater than the input current, a state in which a battery voltage of the battery is detected to be higher than a specified full charge voltage, or a state in which the input current is less than a preset value; and

In the event that at least one of the plurality of specified first conditions is satisfied, the second charger is disabled and the battery is charged by using the first charger.

2. The electronic device of claim 1, wherein the state in which the input current is less than a pre-configured value comprises: the input current is smaller than a state in which a maximum input current, which is a maximum input current that can be supplied from the first charger to the battery, is reduced by the specified multiple.

3. The electronic device of claim 1, wherein the second charging device is a charging device that does not support power delivery PD communications and provides an output less than a specified reference power.

4. The electronic device of claim 3, wherein the second charging device is a charging device that does not support programmable power PPS functionality.

5. The electronic device of claim 3, wherein the processor is configured to: in the case where the external device connected to the electronic device is the second charging device and the specified initial condition is satisfied:

Configuring an input current obtained by applying an offset to a maximum output current that can be supplied from the second charging device;

Receiving the maximum output current from the second charging device by requesting the input current to which the offset is applied from the second charging device; and

The battery is charged by controlling the input of the maximum output current from the second charging device to the second charger.

6. The electronic device of claim 1, wherein the processor is configured to: in the case where the external device is not the first charging device but a third charging device in which both the output voltage and the output current are fixed:

identifying whether the battery meets a specified initial condition;

monitoring whether at least one of a plurality of specified second conditions is met while charging the battery by the second charger; and

In the event that at least one of the plurality of specified second conditions is satisfied, the second charger is disabled and the battery is charged by using the first charger.

7. The electronic device of claim 6, wherein the third charging device is a charging device that supports power delivery PD communication and provides an output greater than or equal to a specified reference power.

8. The electronic device of claim 6, wherein the plurality of specified second conditions comprise:

A state in which the current input from the third charging device is greater than the input current;

Detecting a state in which a battery voltage of the battery is higher than a specified full charge voltage in a last step portion of a plurality of charging steps for charging the battery; or alternatively

And a state of switching from a constant current CC mode in which an output current of the third charging device is fixed to a constant voltage CV mode in which an output voltage of the third charging device is fixed.

9. The electronic device of claim 8, wherein the processor is configured to: in the case where the third charging device is switched from the CC mode to the CV mode, an output period of a polling signal for identifying a current input to the second charger is shortened.

10. The electronic device of claim 9, wherein the processor is configured to:

Comparing a value obtained by applying a specified multiple to a maximum input current supplied from the first charger to the battery with an input current input from the third charging device in a case where the third charging device is switched from the CC mode to the CV mode; and

In the case where the input current inputted from the third charging device is less than or equal to a value obtained by applying a specified multiple to the maximum input current, the second charger is deactivated and the battery is charged by using the first charger.

11. A method of an electronic device, the electronic device comprising: a battery; a first charger including a switching regulator; and a second charger including a power converter that decreases an input current supplied from an external device by a specified multiple and increases an input voltage supplied from the external device by the specified multiple, the method including:

determining whether the external device is a first charging device capable of adjusting an output voltage and an output current based on control of the electronic device;

In the case where the external device is not the first charging device but a second charging device having a fixed output voltage and output current, identifying whether the battery satisfies a specified initial condition that the remaining capacity or voltage of the battery is less than a specified value;

12. The method of claim 11, wherein the state in which the input current is less than a pre-configured value comprises a state in which the input current is less than a current value that reduces a maximum input current, which is a maximum input current that can be supplied from the first charger to the battery, by the specified multiple.

13. The method of claim 11, wherein the second charging device is a charging device that does not support power delivery PD communications and provides an output less than a specified reference power.

14. The method of claim 13, wherein the second charging device is a charging device that does not support programmable power PPS functionality.

15. The method of claim 13, the method further comprising: in the case where the external device connected to the electronic device is the second charging device and the specified initial condition is satisfied: