Battery temperature control device of electronic device, operating method thereof, and storage medium

Abstract

The present disclosure relates to a device and method for controlling the temperature of a battery in an electronic device. The electronic device may comprise: at least one sensor including a temperature sensor to measure the temperature of a battery; a charging circuit configured to form a positive current flow by discharging from the battery and to form a negative current flow for charging the battery; at least one charging element configured to be charged by the positive current flow and to form a negative current flow by discharging; a memory comprising one or more storage media storing instructions; and at least one processor comprising a processing circuit. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to perform at least one operation. The at least one operation may comprise an operation of determining whether a heating operation is required in consideration of the temperature of the battery and the voltage level of the battery. The at least one operation may comprise an operation of controlling the charging circuit to cause a discharge from the battery at a first current level in a second time interval which is relatively shorter than a first time interval in which a negative current flow is to be formed, according to the determination that the heating operation is required. The first current level may be relatively greater than a second current level to be supplied to the battery for charging the battery.

Description

Battery temperature control device of an electronic device, method of operation thereof, and storage medium

[0001] The present disclosure relates to a device for controlling the temperature of an embedded battery in an electronic device, a method of operation thereof, and a storage medium.

[0002] Electronic devices may include batteries to supply operating power. For example, lithium-ion batteries that can be used in electronic devices have the characteristic that their internal resistance increases rapidly at temperatures lower than the appropriate operating temperature (10 to 35 degrees). If the internal impedance increases, the voltage drop increases when a system load occurs, and as a result, the power may suddenly turn off or cause abnormal operation even when the battery charge is sufficient.

[0003] In fact, a battery with a DCR characteristic of about 50 mOhm at room temperature experiences a significant increase in resistance below 0 degrees, which can cause the power to shut off or malfunction due to a voltage drop caused by the resistance even under normal system loads. Additionally, at low temperatures, the safe charging current threshold that does not reduce battery life drops sharply, making normal charging impossible.

[0004] The information described above may be provided as related art for the purpose of aiding understanding of this document. None of the foregoing is to be claimed as prior art related to this document, nor is it to be used to determine prior art.

[0005] Various embodiments of the present disclosure may provide an apparatus and method for controlling the temperature of a battery in an electronic device.

[0006] According to one embodiment, the electronic device may include a battery, at least one sensor including a temperature sensor for measuring the temperature of the battery, a charging circuit configured to form a positive current flow by discharging from the battery and a negative current flow for charging the battery, at least one charging element configured to be charged by the positive current flow and to form the negative current flow by discharging, a memory including one or more storage media for storing instructions, and at least one processor including a processing circuit. When the instructions are executed individually or collectively by the at least one processor, the electronic device may be caused to perform at least one operation. The at least one operation may include an operation to determine whether a heating operation is required by considering the temperature of the battery and the voltage level of the battery. The at least one operation may include an operation to control the charging circuit so that a discharge from the battery is made to a first current level in a second time interval that is relatively shorter than a first time interval in which the negative current flow is formed, as determined that the heating operation is required. The first current level may be relatively larger than the second current level to be supplied to the battery for charging the battery.

[0007] According to one embodiment, a method of operating an electronic device may be provided. The method may include an operation of determining whether a heating operation is required by considering the temperature of the battery and the voltage level of the battery. The method may include an operation of forming a positive current flow from the battery by a first current level during a first time interval as determined that the heating operation is required. The method may include an operation of forming a negative current flow to the battery by a second current level that is relatively lower than the first current level during a second time interval that is continuous with the first time interval and is relatively longer than the first time interval.

[0008] According to one embodiment, a storage medium for storing computer-readable instructions may be provided. The instructions may cause the electronic device to perform at least one operation when executed by at least a part of at least one processor of the electronic device. The at least one operation may include an operation of determining whether a heating operation is required by considering the temperature of the battery and the voltage level of the battery. The at least one operation may include an operation of forming a positive current flow from the battery by a first current level during a first time interval as determined that the heating operation is required. The at least one operation may include an operation of forming a negative current flow to the battery by a second current level that is relatively lower than the first current level during a second time interval that is continuous with the first time interval and is relatively longer than the first time interval.

[0009] In relation to the description of the drawings, the same or similar reference numerals may be used for identical or similar components.

[0010] FIG. 1 is a block diagram of an electronic device in a network environment according to various embodiments.

[0011] FIG. 2 is a block diagram of a power management module and a battery according to various embodiments.

[0012] FIG. 3 is a block diagram of a power circuit and a battery of an electronic device for receiving power outside the electronic device and / or transmitting power outside the electronic device according to one embodiment.

[0013] FIG. 4 is a block diagram of an electronic device according to various embodiments.

[0014] FIG. 5 is a control flowchart for battery heating in an electronic device according to one embodiment.

[0015] FIG. 6 is a control flowchart for performing a first heating operation using an internal power source in an electronic device according to one embodiment.

[0016] FIG. 7 is a control flowchart for performing a second heating operation using an external power source in an electronic device according to one embodiment.

[0017] FIG. 8 is a circuit diagram of an electronic device according to one embodiment.

[0018] FIG. 9a or FIG. 9b is a timing diagram for explaining heat generation by an internal power source in an electronic device according to one embodiment.

[0019] FIG. 10a or FIG. 10b is a timing diagram for explaining heat generation in an electronic device according to one embodiment.

[0020] FIG. 11 is a drawing to explain that charging time can be shortened by applying an electronic device according to one embodiment.

[0021] Hereinafter, embodiments of the present disclosure are described in detail with reference to the drawings so that those skilled in the art can easily practice them. However, the present disclosure may be embodied in various different forms and is not limited to the embodiments described herein. In relation to the description of the drawings, the same or similar reference numerals may be used for identical or similar components. Furthermore, in the drawings and related descriptions, descriptions of well-known functions and configurations may be omitted for clarity and brevity.

[0022] FIG. 1 is a block diagram of an electronic device (101) in a network environment (100) according to various embodiments.

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

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

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

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

[0027] The program (140) may be stored as software in memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

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

[0029] The sound output module (155) can 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. The speaker may be used for general purposes, such as multimedia playback or recording playback. The receiver may be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part thereof.

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

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

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

[0033] The interface (177) may support one or more specified protocols that can be used for the electronic device (101) to be connected directly or wirelessly to an external electronic device (e.g., electronic device (102)). According to one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

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

[0035] The haptic module (179) can convert an electrical signal into a mechanical stimulus (e.g., vibration or movement) or an electrical stimulus that can be perceived by the user through tactile or kinesthetic senses. According to one embodiment, the haptic module (179) may include, for example, a motor, a piezoelectric element, or an electric stimulation device.

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

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

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

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

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

[0041] An antenna module (197) can transmit a signal or power to or from an external source (e.g., an external electronic device). According to one embodiment, the antenna module (197) may include an antenna comprising a radiator made of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). According to one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as a first network (198) or a second network (199), may be selected from the plurality of antennas, for example, by a communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device through the selected at least one antenna. According to some embodiments, in addition to the radiator, other components (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as part of the antenna module (197).

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

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

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

[0045] FIG. 2 is a block diagram (200) for a power management module (e.g., power management module (188) of FIG. 1) and a battery (e.g., battery (189) of FIG. 1) according to various embodiments.

[0046] Referring to FIG. 2, the power management module (188) may include a charging circuit (210), a power regulator (220), or a power gauge (230). The charging circuit (210) may charge the battery (189) using power supplied from an external power source (e.g., external power source (420) of FIG. 4) for the electronic device (101). According to one embodiment, the charging circuit (210) may select a charging method (e.g., normal charging or fast charging) based on at least some of the type of external power source (e.g., power adapter, USB, or wireless charging), the amount of power that can be supplied from the external power source (e.g., about 20 watts or more), or the attributes of the battery (189), and may charge the battery (189) using the selected charging method. The external power source may be wired to the electronic device (101), for example, through a connection terminal (e.g., connection terminal (178) in FIG. 1), or wirelessly through an antenna module (e.g., antenna module (197) in FIG. 1).

[0047] The power regulator (220) can generate multiple powers having different voltage or different current levels by adjusting the voltage level or current level of power supplied from, for example, an external power source or a battery (189). The power regulator (220) can adjust the power of the external power source or the battery (189) to a voltage or current level suitable for each of the components included in the electronic device (101). According to one embodiment, the power regulator (220) may be implemented in the form of a low drop-out (LDO) regulator or a switching regulator.

[0048] The power gauge (230) can measure usage status information for the battery (189) (e.g., capacity of the battery (189), number of charge / discharge cycles, voltage, or temperature).

[0049] A power management module (188) can determine charge state information (e.g., lifespan, overvoltage, undervoltage, overcurrent, overcharge, overdischarge, overheating, short circuit, or swelling) related to the charging of a battery (189) based at least part of the measured usage state information using, for example, a charging circuit (210), a voltage regulator (220), or a power gauge (230). The power management module (188) can determine whether the battery (189) is normal or abnormal based at least part of the determined charge state information. If the state of the battery (189) is determined to be abnormal, the power management module (188) can adjust the charging of the battery (189) (e.g., reducing the charging current or voltage, or stopping the charging). According to one embodiment, at least some of the functions of the power management module (188) may be performed by an external control device (e.g., a processor (120)).

[0050] The battery (189) may include a battery protection circuit module (PCM) (240). The battery protection circuit (240) may perform one or more of various functions (e.g., a pre-shutdown function) to prevent performance degradation or burnout of the battery (189). The battery protection circuit (240) may be configured as at least part of a battery management system (BMS) capable of performing various functions, including cell balancing, measuring battery capacity, measuring charge / discharge cycles, measuring temperature, or measuring voltage.

[0051] According to one embodiment, at least a portion of the usage status information or charge status information of the battery (189) may be measured using a corresponding sensor (e.g., a temperature sensor) among the sensor modules (e.g., the sensor module (176) of FIG. 1), a power gauge (230), or a power management module (188). According to one embodiment, the corresponding sensor (e.g., a temperature sensor) among the sensor modules (176) may be included as part of the battery protection circuit (240) or may be placed near the battery (189) as a separate device.

[0052] FIG. 3 is a block diagram of a power supply unit (300) of an electronic device (e.g., the electronic device (101) of FIG. 1) according to one embodiment.

[0053] Referring to FIG. 3, the power supply unit (300) may include at least one processor (310) (e.g., processor (120) of FIG. 1), at least one memory (320) (e.g., memory (130) of FIG. 1), a charging circuit (330), a charging element (340), a battery (350) (e.g., battery (189) of FIG. 1), or at least one sensor (360) (e.g., sensor module (176) of FIG. 1).

[0054] The power supply unit (300) can support wired charging by using power input from an external electronic device (e.g., a travel adapter) through a wired interface to charge the battery (350). The power supply unit (300) can support wireless charging by using power input from an external electronic device (e.g., a wireless charging pad) through a conductive pattern (e.g., a coil).

[0055] At least one circuit supporting wired charging in the power supply unit (300) may include a circuit configured to charge the battery (350) using power input from an external electronic device (e.g., TA). At least one circuit supporting wired charging in the power supply unit (300) may include a circuit configured to generate a specified voltage using the voltage of the battery (350) and to transmit power based on the specified voltage to an external electronic device through a wired interface (e.g., USB interface).

[0056] At least one circuit supporting wireless charging in the power supply unit (300) may include a circuit configured to receive power from an external electronic device through a conductive pattern and to charge a battery (189) using the received power (or, rectified, converted, and / or regulated power). At least one circuit supporting wireless charging in the power supply unit (300) may include a circuit configured to convert the voltage of power received from the battery (189) or an external electronic device (e.g., TA) to have a specified voltage value, convert the current characteristics of the power having the specified voltage value from DC (direct current) to AC (alternating current), and transmit wirelessly through a conductive pattern.

[0057] The power supply device (300) can simultaneously perform the operation of charging the battery (350) and the operation of transmitting power to an external electronic device. For example, the charging circuit (330) may include a plurality of charging circuits (e.g., the first charging circuit (441) and the second charging circuit (443) of FIG. 4). At least one of the plurality of charging circuits may receive power from an external electronic device (e.g., TA) through a wired interface and charge the battery (350) using the received power. At least one of the plurality of charging circuits may transmit the power charged in the battery (350) to an external electronic device (e.g., a smartphone, a wireless earphone cradle) through a conductive pattern. As another example, at least one of the plurality of charging circuits may receive power from an external electronic device (e.g., TA) through a wired interface and transmit at least a portion of the received power to an external electronic device (e.g., a smartphone, a wireless earphone cradle) through a conductive pattern. The battery (350) can be charged using at least a portion of the power received by using at least one of a plurality of charging circuits. For example, a magnetic field induction coupling method, a resonant coupling method, or a combination thereof may be used as a wireless power transmission method for wireless charging.

[0058] The charging circuit (330) can adjust the voltage and / or current of the power input via wired charging or wireless charging. For example, the charging circuit (330) can charge the battery (350) by adjusting the voltage and / or current of the power input. The charging circuit (330) may include a switching charger (e.g., DC / DC converter) including a buck-boost converter (e.g., the first charging circuit (441) of FIG. 8) and a charging controller (not shown). The charging circuit (330) may include a direct charger (e.g., the second charging circuit (443) of FIG. 8) that supports direct charging (e.g., "DC charging") using a switched capacitor divider method. A direct charger may include an N:1 voltage divider that lowers the input voltage to 1 / N (where N is a positive integer) and increases the input current by N times.

[0059] The processor (310) performs overall control of the power supply device (300) and can generate and transmit various messages required for wireless charging. The processor (310) can manage power supplied to the electronic device (101) and power transmitted from the electronic device (101) via wireless charging. The processor (310) may be implemented, for example, as a power management integrated circuit (PMIC) or at least part of an application processor. The processor (310) may be a control circuit for controlling the charging circuit (330).

[0060] The processor (310) can check charge state information related to the charging of the battery (189) (e.g., charge / discharge voltage / current, battery life, overvoltage, undervoltage, overcurrent, overcharge, overdischarge, overheating, short circuit, or swelling). For example, the processor (310) can check a signal (voltage or current) at an input or output terminal of the power supply (300). The processor (310) can determine the state of the battery (350) based on at least some of the checked charge state information. If the processor (310) determines that the state information of the battery (350) is abnormal, it can adjust the charging of the battery (350) (e.g., adjust the charging current, adjust the charging voltage, or stop charging).

[0061] The electronic device (101) may include at least one sensor (e.g., a temperature sensor) (360) for checking the charge state of the battery (350). The processor (310) may check the charge state of the battery (350) based on data received from at least one sensor (360). For example, if the temperature of the battery (350) being charged is above a certain temperature, the processor (310) may determine that the battery (350) is in an overheated state and adjust the charging of the battery (350) (e.g., adjusting the charging current, adjusting the charging voltage, or stopping the charging). For example, if the temperature of the battery (350) is below a certain temperature, the processor (310) may determine that the battery (350) is in a low temperature state and control the power supply device (300) to perform heat generation using internal power (e.g., power supplied by the battery (350)) and / or external power (e.g., power supplied by an external power source). The heat generated by the processor (310) controlling the power supply circuit (300) may include self-heating. Here, self-heating may correspond to heat generated using power supplied by an internal power source such as a battery (350). The external power may be power supplied by an external power source (420), such as an alternating current (AC) outlet that can be connected via a charging cable such as a TA, for example.

[0062] Heat generation under the control of the processor (310) may be performed until the temperature of the battery (350) rises to a target level. According to one example, self-heating using internal power (hereinafter referred to as 'first heat generation') may be based on heat generated in the internal resistance of the battery (350) due to current flow resulting from the discharge or charging of the battery (350). According to the first heat generation, since most of the heat is generated inside the battery (350), only power conversion losses may occur, and unnecessary heat losses may not occur. Heat generation using external power (hereinafter referred to as 'second heat generation') may cause heat to be generated in an internal circuit adjacent to the battery (350) by current circulation using external power, and / or generate a circulating current in a conductive pattern, thereby raising the ambient temperature of the battery (350). For example, current circulation using external power may activate functions provided by the electronic device (101) and / or cause power conversion circuits to operate.

[0063] Although not illustrated, the power supply unit (300) may include a wired interface. For example, the wired interface may be connected to an external electronic device (e.g., TA) via a connector. The wired interface may include a USB communication module connected to the processor (310) via a designated system interface (e.g., I2C (inter-integrated circuit) or MIPI (mobile industry processor interface)). For example, the TA may communicate with the USB communication module of the electronic device (101) via a USB terminal. The USB communication module may include a communication module for USB power delivery (PD) communication. The external electronic device connected to the electronic device (101) by the wired interface may be a device that supports a programmable power supply (PPS) function or a device that does not support PPS. For example, a PPS-supporting device may adjust the voltage of the power output from the external electronic device to the electronic device (101) based on the control of the processor (310) of the electronic device (101). A PPS non-supporting device can fix the voltage of the power output from an external electronic device to an electronic device (101).

[0064] FIG. 4 is a block diagram of an electronic device (400) according to various embodiments.

[0065] Referring to FIG. 4, the electronic device (400) may include a power management module (e.g., the power management module (188) of FIG. 1) and a battery (410) (e.g., the battery (189) of FIG. 1). According to one example, the power management module (188) may include a charging circuit (440) (e.g., the charging circuit (330) of FIG. 3) or a charging element (450) (e.g., the charging element (340) of FIG. 3). The electronic device (400) may include a connector (421), which is, for example, an input port (e.g., the connector (178) of FIG. 1) for receiving external power. The connector (421) for receiving external power may also be referred to as a 'power port (+ terminal, - terminal)'. An overvoltage protection (OVP) circuit (423) may prevent the charging circuit (440) from being damaged by excessive power (high voltage, high current) supplied from the connector (421). The electronic device (400) may include a coil (431), which is, for example, a conductive pattern for receiving external power. External power supplied to the coil (431). The power can be rectified to a stable voltage level by the current circuit (433) and supplied to the charging circuit (440).

[0066] The charging circuit (440) can form a current flow to perform a first heating using internal power (e.g., power supplied by the battery (410)) and / or a second heating using external power (e.g., power supplied by the external power source (420). The charging circuit (440) can operate by giving a relatively higher priority to the external power source than to the internal power source. For example, when external power is supplied, the charging circuit (440) can switch the driving power of the internal circuit from the internal power supplied by the battery (410) to the external power. For example, when the supply of external power is interrupted, the charging circuit (440) can switch the power source supplying the driving power of the internal circuit to the battery (410), which is the internal power source.

[0067] According to one example, in the first heating, the charging circuit (440) may form a path for forming a current flow (hereinafter referred to as 'positive current flow') for charging a charging element (450) during a discharge operation of the battery (410). The positive current flow may include a current flow until the current flowing out from the positive terminal (+) of the battery (410) reaches the charging element (450). The positive current flow is for the charging element (450) (or the charging capacitors (C) of FIG. 8). Bus (451), C SYS (453a), C SYS (453b)) enables charging. For example, the charging circuit (440) can be controlled to generate a positive current flow by a large current for a short period of time in response to the control of the control circuit (processor (310) of FIG. 3). While the positive current flow is being formed, heat (I) due to the current (I) flowing out from the battery (410) is generated in the internal resistance (R) of the battery (410). 2 R) may occur. Most of the heat generated from the internal resistance of the battery (410) can be used to raise the temperature of the battery (410) without loss.

[0068] According to one example, in the first heating, the charging circuit (440) may form a path for forming a current flow (hereinafter referred to as 'negative current flow') that occurs due to the discharge of the charging element (450) during the charging operation of the battery (410). The negative current flow may include a current flow from the charging element (450) to the positive (+) of the battery (410). The negative current flow is formed by the charging element (450) (or the charging capacitors (C) of FIG. 8). Bus (451), C SYS (453a), C SYSIt may be based on the discharge of (453b). For example, the charging circuit (440) may be controlled to generate a negative current flow by a small current for a long time in response to the control of the control circuit (processor (310) of FIG. 3). While the negative current flow is being formed, heat (I') due to the current (I') flowing into the battery (410) is generated in the internal resistance (R) of the battery (410). 2 R) may occur. Most of the heat generated from the internal resistance of the battery (410) can be used to raise the temperature of the battery (410) without loss.

[0069] According to one example, in the second heating, the charging circuit (440) may configure a path to cause current circulation by external power supplied by the connection of an external power source. For example, the charging circuit (440) may form a path for current circulation based on external power to cause heat to be generated in an internal circuit adjacent to the battery (410). For example, the charging circuit (440) may form a path for current circulation based on external power to activate one or more specific functions provided by the electronic device (101) or / or to operate the power conversion circuit. The heat generated by the activation of one or more specific functions or / or the operation of the power conversion circuit may help to raise the temperature of the battery (410).

[0070] According to one example, the charging circuit (440) may include a power selection circuit (445), but this is merely exemplary. For example, the power selection circuit (445) may be provided externally as a separate configuration from the charging circuit (440). The power selection circuit (445) may form a current flow for a first heating or a second heating depending on whether the external power source (420) is connected. More specifically, the power selection circuit (445) may perform a switching operation to select either the battery (410) or the external power source as a power source for heating (e.g., the first or second heating). For example, the power selection circuit (445) may select either the battery (410) or the external power source as a power source for heating in response to control by the processor (310) based on whether the external power source is connected. For example, when the battery (410) is selected as the power source by the power selection circuit (445), the charging circuit (440) can perform an operation to form a positive current flow or a negative current flow for the first heating. For example, when an external power source is selected as the power source by the power selection circuit (445), the charging circuit (440) can perform an operation to form a current circulation for the second heating.

[0071] According to one example, the power selection circuit (445) may operate to give priority to the external power source over the battery (410). For example, when the external power source is connected, the power selection circuit (445) may switch the power source supplying the driving power of the internal circuit from the battery (410) to the external power source. For example, when the external power source is disconnected, the power selection circuit (445) may switch the power source supplying the driving power of the internal circuit from the external power source to the battery (410).

[0072] According to one example, the charging circuit (440) may include at least two charging circuits. The charging circuit (440) may include a buck converter (e.g., the buck converter (441) of FIG. 8) as the first charging circuit (441). The charging circuit (440) may include a charge pump (e.g., the charge pump (443) of FIG. 8) as the second charging circuit (443).

[0073] For example, the charging circuit (440) uses the first charging circuit (441) to charge at least one first charging element (e.g., capacitor C of FIG. 8) included in the charging element (450). Bus A charging operation can be performed to accumulate charge in (451). The accumulation of charge in the first charging element (451) can be achieved, for example, by a positive current flow. The charging circuit (440) can perform a discharge operation to release the charge accumulated in the first charging element (451) using the first charging circuit (441). The release of charge from the first charging element (451) can, for example, form a negative current flow.

[0074] For example, the charging circuit (440) can perform charging and discharging for the first and second charging elements (451, 453) using the first and second charging circuits (441, 443). Specifically, the charging circuit (440) can use the second charging circuit (443) to apply pressure to the first charging element (451) (e.g., n times the voltage level of the battery (410) (n*V). Battery )) A state can be provided. The pressurized state of the first charging element (451) is provided through the first charging circuit (441) to at least one second charging element (453) included in the charging element (450) (e.g., capacitor C of FIG. 8). SYSCharge can be accumulated relatively quickly in (453a, 453b). Charge accumulation in the first charging element (451) and charge accumulation in the second charging element (453) using the second charging circuit (441) can be achieved, for example, by positive current flow. The charging circuit (440) can perform a discharge operation to release the charge accumulated in the second charging element (453) to the battery (410) through a specific semiconductor element (e.g., the seventh semiconductor element (Q7) of FIG. 8). The charging circuit (440) can perform a discharge operation to release the charge accumulated in the second charging element (453) delivered through the first charging circuit (441) to the battery (410) through the second charging circuit (443), together with the charge accumulated in the first charging element (451). The discharge of charge from the first and / or second charging elements (451, 453) can, for example, form a negative current flow.

[0075] FIG. 5 is a control flowchart for battery heating in an electronic device according to one embodiment (e.g., the electronic device (101) of FIG. 1).

[0076] In the following embodiments, each operation may be performed sequentially, but is not necessarily performed sequentially. For example, the order of each operation may be changed, and at least two operations may be performed in parallel.

[0077] Referring to FIG. 5, the electronic device (101) can determine, in operation 510, whether an external power source (e.g., the external power source (420) of FIG. 4) is connected. For example, the electronic device (101) can determine whether external power is supplied from the external power source (420) through an external electronic device such as TA.

[0078] When an external power source (420) is not connected, the electronic device (101) can perform a heating operation (hereinafter referred to as the 'first heating operation') using a current flow (or current circulation) resulting from the charging and / or discharging of an internal power source (e.g., the battery (410) of FIG. 4) in operation 520. According to one example, the electronic device (101) can perform a first heating operation to raise the cell temperature of the battery (410) by alternately repeating the discharge operation and the charging operation of the battery (410) while the battery (410) is in a low temperature state.

[0079] According to one example, the electronic device (101) can be operated to create a positive current flow of a large current for a short time during the discharge interval of the battery (410) (e.g., Δt1, Δt3 in FIG. 9a or Δt5, Δt7 in FIG. 9b). To create a positive current flow, the outflow of current (I) from the battery (410) generates heat (I) in the internal resistance (R) of the battery (410). 2 It can be used to generate R).

[0080] According to one example, the electronic device (101) may be operated to generate a small negative current flow for a long time during the charging time interval of the battery (410) (e.g., Δt2 in FIG. 9a or Δt6 in FIG. 9b). The negative current flow may be used for regenerative charging of the battery (410). The negative current flow is generated by a charging element (e.g., the charging element (450) of FIG. 4) or charging capacitors (C) of FIG. 8. Bus (451), C SYS (453a), C SYS (453b)) can be formed by discharge. The current (I') flowing into the battery (410) by the negative current flow is heat (I') from the internal resistance (R) of the battery (410). 2 It can be used to generate R).

[0081] When an external power source (420) is connected, the electronic device (101) can perform a heating operation (hereinafter referred to as the "second heating operation") using a current flow (or current circulation) (hereinafter referred to as "external current flow") by power supplied from the external power source (e.g., the external power source (420) of FIG. 4) in operation 530. The electronic device (101) creates a dummy load internally to induce power consumption, thereby causing heat to be generated around the battery (410). For example, the electronic device (101) can cause current to flow through an internal circuit adjacent to the battery (410) by the external current flow while the battery (410) is in a low temperature state, thereby causing heat to be generated. For example, the electronic device (101) can cause a circulating current to be generated in a conductive pattern by the external current flow while the battery (410) is in a low temperature state, thereby raising the ambient temperature of the battery (410). For example, the electronic device (101) can generate heat by activating specific functions through an external current flow while the battery (410) is in a low temperature state. For example, the electronic device (101) can generate heat by operating power conversion circuits through an external current flow while the battery (410) is in a low temperature state.

[0082] In the description referring to FIG. 5 above, it was assumed that the electronic device (101) determines whether the external power source (420) is connected prior to performing the first heating operation using internal power or external power, but this is merely an exemplary operation. For example, the electronic device (101) may monitor whether the external power source (420) is connected even while performing the first heating operation using internal power in operation 520. For example, if power supply by the external power source (420) occurs while performing the first heating operation, the electronic device (101) may switch to a second heating operation using external power (e.g., operation 530). For example, the electronic device (101) may monitor whether the connection of the external power source (420) is cut off even while performing the second heating operation using external power (420). The electronic device (101) can switch to a second heating operation (e.g., operation 520) based on the charging / discharging of the battery (410) when, for example, the power supplied by the external power source (420) is cut off. In the description to be provided below, the first heating operation using internal power and / or the second heating operation using external power to be performed by the electronic device (101) will be described with reference to a separate control flow diagram, but this is only for the convenience of explanation. For example, the electronic device (101) may perform the first and second heating operations described below based on a single control flow diagram.

[0083] FIG. 6 is a control flowchart for performing a first heating operation using an internal power source (e.g., battery (410) of FIG. 4) in an electronic device (e.g., electronic device (101) of FIG. 1) according to one embodiment.

[0084] In the following embodiments, each operation may be performed sequentially, but is not necessarily performed sequentially. For example, the order of each operation may be changed, and at least two operations may be performed in parallel.

[0085] The first heating operation using an internal power source according to FIG. 6 can be performed while the power supply from an external power source (e.g., the external power source (420) of FIG. 4) is cut off. According to one example, the electronic device (101) can continuously determine whether power is supplied by the external power source (420) while performing the operation according to FIG. 6. For example, if power supply from the external power source (410) is initiated while the first heating operation is being performed to control the temperature of the battery (410) based on the charging / discharging of the battery (410), the electronic device (101) can switch to a mode for performing a second heating operation by the external power source. For example, to perform the second heating operation by the external power source, the electronic device (101) can perform control according to FIG. 7, which will be described later.

[0086] Referring to FIG. 6, the electronic device (101) can check the temperature of the battery (410) in operation 610. According to one example, the electronic device (101) may provide a temperature sensor for measuring the temperature of the battery (410). For example, the electronic device (101) may include the temperature sensor as part of a battery protection circuit (e.g., battery protection circuit (240) of FIG. 2) to prevent performance degradation or burnout of the battery (410), or may provide it separately around the battery (410).

[0087] The electronic device (101) can determine whether a first heating is required based on the temperature of the battery (410) identified in operation 620. The electronic device (101) can raise the temperature of the battery (410) by the first heating. According to one example, the first heating may be based on the current discharged from the battery (410) or the current flowing in for charging the battery (410) being converted into heat by the internal resistance of the battery (410).

[0088] If the electronic device (101) determines that heating of the battery (410) is necessary, in operation 630, the remaining capacity of the battery (410) can be checked. For example, the battery voltage can be checked to check the remaining capacity of the battery. For example, the remaining capacity of the battery (410) may be a power capacity based on the battery charged voltage level.

[0089] The electronic device (101) can determine, in operation 640, whether the remaining amount of the battery (410) is at a level where it is possible to perform the first heating operation by internal power. For example, the electronic device (101) can determine that if the remaining amount of the battery (410) is 15% or more, the first heating operation by internal power is possible.

[0090] If the remaining amount of the battery (410) is not sufficient to perform the first heating, the electronic device (101) can proceed to operation 610 to check the temperature change of the battery (410) again.

[0091] The electronic device (101) can perform a first heating operation by internal power in operation 650 if the remaining charge of the battery (410) is at a level sufficient to receive the first heating. According to one example, the electronic device (101) can alternately repeat the discharge operation of the battery (410) and the charging operation of the battery (410). During the discharge operation of the battery (410), the electronic device (101) can maintain a positive current flow due to a large amount of charge (or large current) released from the battery (410) for a short period of time. The electronic device (101) uses the released power to charge a capacitor (charging element (450) of FIG. 4) or charging capacitors (C) of FIG. 8. Bus (451), C SYS (453a), C SYS (453b)) can be charged. During the charging operation of the battery (410), the electronic device (101) can charge a charging capacitor (e.g., the charging element (450) of FIG. 4 or the charging capacitors (C) of FIG. 8). Bus(451), C SYS (453a), C SYS A negative current flow can be maintained due to a small amount of charge (or small current) emitted from (453b) for a long time.

[0092] According to one example, the current flow capable of causing the first heating operation may include a positive current flow that occurs during the discharge operation of the battery (410). The positive current flow may be a current flow flowing out from the positive (+) terminal of the battery (410). A charging element included in the electronic device (101) (e.g., the charging element (450) of FIG. 4) or the charging capacitors (C) of FIG. 8 Bus (451), C SYS (453a), C SYS (453b)) can be charged by a positive current flow. According to one example, the electronic device (101) can be controlled to generate a positive current flow by a large current for a short period of time. For example, the electronic device (101) can be operated to create a positive current flow of a large current for a short period of time during the discharge time interval (e.g., Δt1, Δt3 in FIG. 9a or Δt5, Δt7 in FIG. 9b) where the discharge operation of the battery (410) is performed. The current (I) flowing out from the battery (410) to create a positive current flow is heat (I) in the internal resistance (R) of the battery (410). 2 R) is generated. Most of the heat generated from the internal resistance of the battery (410) is used to raise the temperature of the battery (410) without loss.

[0093] According to one example, the current flow capable of causing the first heating operation may include a negative current flow that occurs during the charging operation of the battery (410). The negative current flow may be a current flow that flows into the positive (+) terminal of the battery (410). A charging element included in the electronic device (101) (e.g., the charging element (450) of FIG. 4) may be discharged to create a negative current flow. According to one example, the electronic device (101) may be controlled to generate a negative current flow by a small current for a long time. Here, the long time may have a relative meaning to the short time during which a positive current flow occurs. Here, the small current may have a relative meaning to the large current that generates the positive current flow. For example, the electronic device (101) may operate to create a small negative current flow for a long time during a charging time interval (e.g., Δt2 in FIG. 9a or Δt6 in FIG. 9b) in which the charging operation of the battery (410) is performed. To create a negative current flow to be used for regenerative charging of the battery (410), a charging element (e.g., the charging element (450) of FIG. 4) or charging capacitors (C) of FIG. 8 may be used. Bus (451), C SYS (453a), C SYS The current (I') flowing out from (453b) and into the battery (410) generates heat (I') in the internal resistance (R) of the battery (410). 2 R) is generated. Most of the heat generated from the internal resistance of the battery (410) is used to raise the temperature of the battery (410) without loss.

[0094] For the operation described above, the electronic device (101) may control the charging circuit (e.g., the charging circuit (440) of FIG. 4) so ​​that a large positive current flow occurs for a short period of time, or a small negative current flow occurs for a long period of time. According to one example, the electronic device (101) may control the switching operation of a plurality of semiconductor devices (e.g., the semiconductor devices (Q1, Q2, Q3, Q4, Q5, Q6, Q7) of FIG. 8) included in the charging circuit (440) to generate a large positive current flow for a short period of time. According to one example, the electronic device (101) may control the switching operation of a plurality of semiconductor devices (e.g., the semiconductor devices (Q1, Q2, Q3, Q4, Q5, Q6, Q7) of FIG. 8) included in the charging circuit (440) to generate a small negative current flow for a long period of time. This is an exemplary suggestion, and the electronic device (101) may be implemented to generate positive current flow and / or negative current flow with other hardware configurations and / or software.

[0095] The electronic device (101) can determine whether heating by the first heat generation needs to be maintained in operation 660. This can be based on the electronic device (101) sensing the temperature of the battery (410) that can be raised by the first heat generation.

[0096] If the electronic device (101) determines that the temperature of the battery (410) has not risen to a target temperature due to the first heating, in operation 670, it can check the remaining amount of the battery (410) and determine whether the remaining amount of the battery (410) is at a level where it is possible to perform the first heating by internal power. For example, if the remaining amount of the battery (410) is 15% or more, the electronic device (101) can determine that the first heating operation by internal power is possible.

[0097] When the electronic device (101) determines that the remaining amount of the battery (410) is at a level where the first heating is possible, it proceeds to operation 650 and can continue to perform the first heating operation using internal power.

[0098] The electronic device (101) may stop all operations for the first heating in operation 660 if it determines that the temperature of the battery (410) has reached a target temperature due to the first heating, or if it determines that the remaining amount of the battery (410) is not at a level where the first heating is possible. For example, the electronic device (101) may stop the charging / discharging operation of the battery (410) for the first heating.

[0099] As described with reference to FIG. 6, when the battery (410) is in a low temperature state (e.g., the heating initiation temperature (Tempself_heat_L) of FIG. 10a or FIG. 10b), the electronic device (101) can repeatedly perform the discharge operation and / or charge operation of the battery (410) using an internal circuit (e.g., the charging circuit (440) and charging element (450) of FIG. 4 or FIG. 8).

[0100] According to one example, the electronic device (101) can be operated to create a positive current flow by a large current (e.g., a low-temperature discharge allowable current of 5A) for a short time during discharge by the battery (410). The positive current flow can accumulate charge in a first charging element (e.g., the first charging element (451) of FIG. 4) through a first charging circuit (e.g., the first charging circuit (441) of FIG. 4). The positive current flow can cause a relatively high voltage to be applied to the first charging element (451) through a second charging circuit (443), for example. The positive current flow allows the applied voltage of the first charging element (451) to be used to accumulate charge in a second charging element (e.g., the second charging element (453) of FIG. 4) through the first charging circuit (441).

[0101] According to one example, the electronic device (101) may be operated to create a negative current flow by a small current (e.g., a low-temperature charging allowable current of 0.25 A) discharged for a long time from a charging element (451, 453) included in the internal circuit during regenerative charging of the battery (410). The negative current flow may be formed, for example, by the release of charges accumulated in the first charging element (451) and / or charges accumulated in the second charging element (453). The negative current flow may be formed, for example, so that charges released from the first charging element (451) and / or the second charging element (453) flow in for charging the battery (410). Due to the negative current flow, the current flowing into the battery (410) may be used to generate heat in the internal resistance of the battery (410).

[0102] According to the operation described above, the electronic device (101) allows the charging elements (451, 453) to be charged for a short period of time by a high-intensity positive current flow, and allows the battery (410) to be regenerated for a long period of time by a relatively low-intensity positive current flow. In this case, since most of the heat can be generated inside the battery (410) without affecting the lifespan of the battery (410), the temperature of the battery (410), which was in a low-temperature state, can be rapidly raised to a stable level (e.g., the heat release temperature (Tempself_heat_H) of FIG. 10a or FIG. 10b). For example, the heat generated in the internal resistance (R) of the battery (410) due to the current (I) according to the positive current flow or negative current flow is 'I 2It can be defined as R'. Therefore, when discharging the battery (410), the temperature of the battery (410) can be rapidly increased due to a high-intensity positive current flow for a short period, and when regenerative charging the battery (410), the temperature of the battery (410) can be increased due to a low-intensity negative current flow for a long period.

[0103] FIG. 7 is a control flowchart for performing a second heating operation using an external power source (e.g., the external power source (420) of FIG. 4) in an electronic device (e.g., the electronic device (101) of FIG. 1) according to one embodiment.

[0104] In the following embodiments, each operation may be performed sequentially, but is not necessarily performed sequentially. For example, the order of each operation may be changed, and at least two operations may be performed in parallel.

[0105] The second heating operation according to FIG. 7 can be performed while power is supplied from an external power source (420). According to one example, the electronic device (101) can continuously determine whether power is supplied by the external power source (420) while performing the operation according to FIG. 7. For example, if power supply by the external power source (410) is cut off while the second heating operation is being performed, the electronic device (101) can switch to a mode for performing a first heating operation to control the temperature of the battery (410) based on the charging / discharging of the battery (410). As an example, the first heating operation by internal power is as described above with reference to FIG. 6.

[0106] Referring to FIG. 7, the electronic device (101) can check the temperature of the battery (410) in operation 710. According to one example, the electronic device (101) may provide a temperature sensor for measuring the temperature of the battery (410). For example, the electronic device (101) may include the temperature sensor as part of a battery protection circuit (e.g., battery protection circuit (240) of FIG. 2) to prevent performance degradation or burnout of the battery (410), or may provide it separately around the battery (410).

[0107] The electronic device (101) can determine whether heating is required based on the temperature of the battery (410) identified in operation 720. The electronic device (101) can raise the temperature of the battery (410) by heating. According to one example, heating may be based on the current discharged from the battery (410) or the current flowing in for charging the battery (410) being converted into heat by the internal resistance of the battery (410).

[0108] If the electronic device (101) determines that heating of the battery (410) is necessary, it may perform a second heating operation by external power (420) in operation 730. According to one example, the electronic device (101) may perform a second heating operation using an external current flow by power supplied from an external power source (420). For example, the electronic device (101) may cause current to flow in an internal circuit adjacent to the battery (189) by an external current flow while the battery (410) is in a low temperature state, thereby generating heat. For example, the electronic device (101) may cause a circulating current to be generated in a conductive pattern by an external current flow while the battery (410) is in a low temperature state, thereby raising the ambient temperature of the battery (410). For example, the electronic device (101) may cause specific functions to be activated by an external current flow while the battery (410) is in a low temperature state, thereby generating heat. For example, the electronic device (101) can cause power conversion circuits to operate by an external current flow in a low temperature state of the battery (410) to generate heat.

[0109] The electronic device (101) can determine whether heating by the second heating is necessary to be maintained in operation 740. This can be based on the electronic device (101) sensing the temperature of the battery (410) that can be raised by the second heating.

[0110] If the electronic device (101) determines that the temperature of the battery (410) has not risen to the target temperature due to the second heating, it can determine in operation 750 whether the connection of the external power source (420) is maintained.

[0111] If the connection of the external power source (420) is maintained, the electronic device (101) can proceed to operation 730 and continue to perform a second heating operation by the external power source (420).

[0112] The electronic device (101) may stop all operations for the second heating in operation 760 if the connection of the external power source (420) is cut off. For example, the electronic device (101) may stop the charging / discharging operation of the battery (410) for the second heating.

[0113] As described with reference to FIG. 7, when the battery (410) is in a low temperature state (e.g., the heating initiation temperature (Tempself_heat_L) of FIG. 10a or FIG. 10b) while the external power source (420) is connected, the electronic device (101) may force a dummy load internally based on the power supplied by the external power source (420). The electronic device (101) may, for example, cause current to flow in an internal circuit adjacent to the battery (410) to generate heat. The electronic device (101) may, for example, cause a circulating current to be generated in a conductive pattern to raise the ambient temperature of the battery (410). The electronic device (101) may, for example, cause specific functions to be activated so that heat is generated by the operation according to specific functions. The electronic device (101) can, for example, cause power conversion circuits to operate by an external current flow in a low temperature state of the battery (410) to generate heat.

[0114] FIG. 8 is a circuit diagram of an electronic device (800) according to one embodiment.

[0115] In FIG. 8, an N-channel MOS-FET is assumed as the switching element, but this is merely an example and may be replaced with a semiconductor device capable of performing switching operations, such as a P-channel MOS-FET, FET, or transistor (TR).

[0116] Referring to FIG. 8, the electronic device (101) may include an electronic device (800) for generating a positive current flow upon discharge of the battery (410) and / or a negative current flow upon charging the battery (410). For example, the positive current flow may correspond to a current flow output from the battery (410) during discharge. For example, the negative current flow may correspond to a current flow flowing into the battery (410) during charging. In the drawing, I corresponding to the negative current flow QBAT Only the positive current flow is illustrated, and the positive current flow is not illustrated, but the positive current flow is I QBAT It may be obvious that it is a current flow corresponding to the opposite direction.

[0117] According to one example, the electronic device (800) may include a first charging circuit (e.g., the first charging circuit (441) of FIG. 4), a second charging circuit (e.g., the second charging circuit (443) of FIG. 4), or a battery (e.g., the battery (410) of FIG. 4). The first charging circuit (441) may be a buck converter (or a buck / boost converter). For example, the second charging circuit (443) may be a charge pump. The second charging circuit (443) may be, for example, a direct charger or SCVD that supports DC charging using the switched capacitor divider method shown in FIG. 8.

[0118] The power supply circuit (800) may include a seventh semiconductor device (Q7) as a separate configuration from the first charging circuit (441). This is done to facilitate the separate operation description of the first charging circuit (441) and the second charging circuit (443). Practically, the seventh semiconductor device (Q7) may be provided in an integrated circuit (IC) that includes the first charging circuit (441). The seventh semiconductor device (Q7) may be a switching device that performs a switching operation in response to external control. The seventh semiconductor device (Q7) may perform a switching operation by a control signal ⑦ from another component (e.g., the processor (310) of FIG. 3). As an example, the seventh semiconductor device (Q7) may be a transistor (Tr). As an example, the seventh semiconductor device (Q7) may be a field effect transistor (FET). For example, the seventh semiconductor device (Q7) may be a MOS-FET (metal-oxide-semiconductor FET). Hereinafter, the seventh semiconductor device (Q7) may be referred to as the seventh switching device (Q7).

[0119] According to one example, the electronic device (800) is subjected to an external voltage (V EXT The first charging capacitor (C) between the power ports (+ terminal, - terminal) to which )(420) is supplied Bus (451)) can be connected. The first charging capacitor (C Bus (451)) has a predetermined voltage V BUS A corresponding charge can be accumulated. An external voltage (V) supplied from an external power source (e.g., the external power source (420) in FIG. 4) EXT )(420) is a target component for generating a dummy load, and a dummy current (I Dummy It can supply ). It may include a switch to check whether an external power supply is being supplied and to control the current to the dummy load according to the supply status.

[0120] According to one example, the buck converter (441) has an external voltage (V EXT )(420) may include first and second semiconductor devices (e.g., Q1, Q2) connected to perform switching operations between power ports (+ terminal, - terminal) supplied by the power supply. The first and second semiconductor devices (Q1, Q2) may be switching devices that perform switching operations in response to external control. The first and second semiconductor devices (e.g., Q1, Q2) may perform switching operations by control signals 1 and 2 from other components (e.g., the processor (310) of FIG. 3). As an example, the first and second semiconductor devices (Q1, Q2) may be transistors (Tr). As an example, the first and second semiconductor devices (Q1, Q2) may be field effect transistors (FETs). For example, the first and second semiconductor devices (Q1, Q2) may be MOS-FETs (metal-oxide-semiconductor FETs). Below, the first semiconductor device (Q1), which is one of the two semiconductor devices (Q1, Q2), may be referred to as the first switching device (Q1), and the other, the second semiconductor device (Q2), may be referred to as the second switching device (Q2). The input terminal of the first switching device (Q1) is an external voltage (V EXT It can be connected to the + terminal included in the power port to which )(420) is supplied. The output terminal of the second switching element (Q2) is connected to the external voltage (V EXT )(420) can be connected to the - terminal included in the power port supplied.

[0121] The buck converter (441) may include a coil (L) with one side connected between the output terminal of the first switching element (Q1) and the input terminal of the second semiconductor element (Q2). The other side of the coil (L) is connected to the second charging capacitor (C SYS (453a) and / or C SYS (453b)) can be electrically connected to. The other side of the coil (L) can be electrically connected to the 2a charging capacitor (C SYSIt can be connected to the ground terminal through (453a)). The 2a charging capacitor (C SYS (453a)) has a predetermined voltage V SYS A corresponding charge can be accumulated. The other side of the coil (L) can be connected to the input terminal of the seventh switching element (Q7). The output terminal of the seventh switching element (Q7) can be connected to the positive terminal (+) of the battery (410).

[0122] The electronic device (800) includes a second capacitor (C) in the buck converter (441). SYS A second charging capacitor (C) provided outside the buck converter (441) to be coupled in parallel with (453a)). SYS (453b)) may be included. 2b charging capacitor (C SYS (453b)) has a specified voltage V SYS A corresponding charge can be accumulated. 2b. Charging capacitor (C SYS One side of (453b)) is the 2a charging capacitor (C SYS (453a)) is connected to the coil (L), and the other side can be connected to the ground terminal.

[0123] According to one example, the charge pump (443) is an external voltage (V EXT)(420) may include third, fourth, fifth, and sixth semiconductor devices (e.g., Q3, Q4, Q5, Q6) connected to operate a switching operation between the positive terminal (+) of the power port supplied by the power port and ground. The third, fourth, fifth, and sixth semiconductor devices (e.g., Q3, Q4, Q5, Q6) may be switching devices that operate a switching operation in response to external control. The third, fourth, fifth, and sixth semiconductor devices (e.g., Q3, Q4, Q5, Q6) may operate a switching operation by control signals ③, ④, ⑤, ⑥ from another component (e.g., the processor (310) of FIG. 3). As an example, the third, fourth, fifth, and sixth semiconductor devices (e.g., Q3, Q4, Q5, Q6) may be transistors (Tr). For example, the third, fourth, fifth, and sixth semiconductor devices (e.g., Q3, Q4, Q5, Q6) may be field effect transistors (FETs). For example, the third, fourth, fifth, and sixth semiconductor devices (e.g., Q3, Q4, Q5, Q6) may be metal-oxide-semiconductor FETs (MOS-FETs). Hereinafter, each of the third, fourth, fifth, and sixth semiconductor devices (e.g., Q3, Q4, Q5, Q6) may be referred to as the third, fourth, fifth, or sixth switching device (e.g., Q3, Q4, Q5, Q6). The input terminal of the third switching device (Q3) is an external voltage (V EXT )(420) can be connected to the + terminal included in the power port supplied. The output terminal of the third switching element (Q3) can be connected to the input terminal of the fourth switching element (Q4). The output terminal of the fourth switching element (Q4) can be connected to the input terminal of the fifth switching element (Q5). The output terminal of the fifth switching element (Q5) can be connected to the input terminal of the sixth switching element (Q6). The output terminal of the sixth switching element (Q6) is connected to the ground terminal (or shunt resistor R). BatteryIt can be connected to the negative terminal (-)) of the battery (410) through. Between the output terminal of the third switching element (Q3) and the output terminal of the fifth switching element (Q5), a pressurized capacitor (C fly A pressurized capacitor (C) can be provided. fly A predetermined voltage V Cfly A corresponding charge can be accumulated. Any point between the output terminal of the fourth switching element (Q4) and the input terminal of the fifth switching element (Q5) can be connected to the positive terminal (+) of the battery (410).

[0124] According to one example, the processor (310) can control control signals ①, ②, ③, ④, ⑤, ⑥, or ⑦ capable of controlling the switching operation of the first to seventh switching elements (Q1, Q2, Q3, Q4, Q5, Q6, Q7) to form a path for forming a positive current flow and / or a negative current flow for the first heating.

[0125] FIG. 9a or FIG. 9b is a timing diagram for explaining heat generation by an internal power source in an electronic device according to one embodiment (e.g., the electronic device (400) of FIG. 4). FIG. 9a is a timing diagram for explaining the charging / discharging of a battery (e.g., the battery (410) of FIG. 4 or FIG. 8) using a first charging circuit (e.g., the first charging circuit (441) of FIG. 4 or the buck converter (441) of FIG. 8). FIG. 9b is a timing diagram for explaining the charging / discharging of a battery (410) using the first charging circuit (441) and a second charging circuit (e.g., the second charging circuit (443) of FIG. 4 or the charge pump (443) of FIG. 8).

[0126] Referring to FIG. 9a, when an external power source (420) is not connected, the electronic device (101) can perform a first-1 heating operation using the internal current flow resulting from the charging / discharging of the battery (410). The first-1 heating operation may be a heating operation to raise the temperature of the battery (410) using a first charging element (451).

[0127] According to one example, the electronic device (101) can generate a first-1a heat by positive current flow during a discharge time interval (Δt1 or Δt3) in which internal power charged in the battery (410) is supplied to an internal circuit (e.g., charging circuit (440) and charging element (450) of FIG. 4). As illustrated, the first-1a heat can be generated by a positive current flow of a large current for a short period of time. The first-1a heat is generated by the first charging capacitor (C Bus Charge can be rapidly accumulated in )(451). That is, the first-1a heating is the first charging capacitor (C Bus Charging voltage (V) of )(451) BUS The level of ) to the target voltage level (V BUS_MAX It can be rapidly increased to ).

[0128] According to one example, the electronic device (101) can generate first-1b heat by a negative current flow during a charging time interval (Δt2 or Δt4) in which power is supplied from an internal circuit (e.g., charging circuit (440) and charging element (450) of FIG. 4) for regenerative charging of the battery (410). As illustrated, first-1b heat generation can be generated by a small negative current flow for a long period of time. First-1b heat generation is caused by the first charging capacitor (C Bus This can be achieved by discharge via )(451). That is, the first-1b heating can be achieved by the first charging capacitor (C Bus Charging voltage (V) of )(451) BUS The level of ) is the discharge threshold voltage level (V Battery It can be achieved during the time it gradually decreases up to ).

[0129] As described above, the electronic device (101) can perform control for the heating operation such that the discharge time interval (Δt1 or Δt3) for performing the first-1a heating operation is relatively shorter than the charging time interval (Δt2 or Δt4) for performing the first-1b heating operation. According to one example, the electronic device (101) can perform control according to the first-1 heating such that the strength of the current supplied to generate a positive current flow in the discharge time interval (Δt1 or Δt3) of the battery (410) is relatively greater than the strength of the current supplied to generate a negative current flow in the charging time interval (Δt2 or Δt4) of the battery (410). According to one example, the electronic device (101) can perform control according to the first-1 heating so that a high current flow occurs in a relatively short time interval (e.g., Δt1 < Δt2) compared to the charging time interval (Δt2 or Δt4) for performing the first-1b heating operation during the discharge time interval (Δt1 or Δt3) for performing the first-1a heating operation. The ratio of the discharge time interval (Δt1 or Δt3) to the charging time interval (Δt2 or Δt4) may be, for example, 10:1.

[0130] Referring to FIG. 9b, when an external power source (420) is not connected, the electronic device (101) can perform a first-second heating operation using the internal current flow resulting from the charging / discharging of the battery (410). The first-second heating operation may be a self-heating operation to raise the temperature of the battery (410) using a second charging element (453).

[0131] According to one example, the electronic device (101) can generate first-2a heat by positive current flow during a discharge time interval (Δt5 or Δt7) in which internal power charged in the battery (410) is supplied to an internal circuit (e.g., charging circuit (440) and charging element (450) of FIG. 4). As illustrated, first-2a heat can be generated by a positive current flow of a large current for a short period of time. First-2a heat is generated by the second charging capacitor (CSYS Charge can be rapidly accumulated in )(453). That is, the first-2a heating is the second charging capacitor (C SYS Charging voltage (V) of )(453) SYS The level of ) to the target voltage level (V SYS_MAX It can be rapidly increased to ).

[0132] According to one example, the electronic device (101) can generate first-2b heating by a negative current flow during a charging time interval (Δt6 or Δt8) in which power is supplied from an internal circuit (e.g., charging circuit (440) and charging element (450) of FIG. 4) for regenerative charging of the battery (410). As illustrated, first-2b heating can be generated by a small negative current flow for a long period of time. First-2b heating is generated by the second charging capacitor (C SYS This can be achieved by discharge via )(453). That is, the first-2b heating can be achieved by the second charging capacitor (C SYS Charging voltage (V) of )(453) SYS The level of ) is the discharge threshold voltage level (V Battery It can be achieved during the time it gradually decreases up to ).

[0133] As described above, the electronic device (101) can perform control according to the heating operation such that the discharge time interval (Δt5 or Δt7) for performing the first-2a heating operation is relatively shorter than the charging time interval (Δt6 or Δt8) for performing the first-2b heating operation. According to one example, the electronic device (101) can perform control according to the first-2 heating such that the strength of the current supplied to generate a positive current flow in the discharge time interval (Δt5 or Δt7) of the battery (410) is relatively greater than the strength of the current supplied to generate a negative current flow in the charging time interval (Δt6 or Δt8) of the battery (410). According to one example, the electronic device (101) can perform control according to the first-2 heating so that a high current flow occurs in a relatively short time interval (e.g., Δt5 < Δt6) compared to the charging time interval (Δt6 or Δt8) for performing the first-2b heating operation during the discharge time interval (Δt5 or Δt7) for performing the first-1a heating operation. The ratio of the discharge time interval (Δt5 or Δt7) and the charging time interval (Δt6 or Δt8) may be, for example, 10:1.

[0134] Table 1 below exemplarily defines the items that the electronic device (400)) must consider in order to perform heat generation.

[0135] Item Condition Battery Temperature -5℃ Battery Internal Resistance 300mΩ Battery Capacity 5000mAh Battery Specific Heat 950J / Kg*℃ Battery Weight 50g Battery Cold Discharge Allowable Current 1C (5A) Battery Cold Charging Allowable Current 0.05C (0.25A) Minimum Allowable Voltage Level for Heating 15% Heating Operation Start Temperature -5℃ Heating Operation Release Temperature 5℃ First Charging Capacitor C Bus 10uF first charging capacitor C Bus Variable allowable voltage 5V ~ 10V Second capacitor C SYS Second capacitor C with a capacity of 200uF SYS Variable allowable voltage V BAT ~ 5V

[0136] Referring to above, in order to raise the battery temperature from the heating operation start temperature of -5°C to the heating operation release temperature of 5°C, the electronic device (101) may require about 0.7% of the battery capacity. This may be a level where it is difficult for the user to perceive a decrease in the total usage time of the electronic device (101) even when various embodiments of the present disclosure are applied.

[0137] According to one example, the first charging capacitor C Bus When performing the first heating using (451), the battery low-temperature discharge allowable current may be set to a specific current level, but when implementing it, it needs to be set to an appropriate current value according to the maximum allowable current for each operation of the buck converter (441) or the switched capacitor.

[0138] According to one example, the first charging capacitor C Bus (451) and second charging capacitor C SYS When performing the first heating using (453), the first charging capacitor C from the battery (410) is used with a switched capacitor. Bus Energy can be transferred to (451). First charging capacitor C Bus The energy charged in (451) passes through the buck converter (441) to the second charging capacitor C SYS It can be transferred to (453). In this case, the first charging capacitor C Bus (451) and / or second charging capacitor C SYS The maximum current discharged by (453) can be increased, which may be effective in raising the temperature of the battery (410).

[0139] FIG. 10a or FIG. 10b is a timing diagram for explaining heat generation in an electronic device according to one embodiment (e.g., the electronic device (400) of FIG. 4). FIG. 10a is a timing diagram for explaining heat generation using a first charging circuit (e.g., the first charging circuit (441) of FIG. 4 or the buck converter (441) of FIG. 8). FIG. 9b is a timing diagram for explaining heat generation using the first charging circuit (441) and a second charging circuit (e.g., the second charging circuit (443) of FIG. 4). Here, the second charging circuit (443) may be, for example, one of a direct charger or an SCVD that supports DC charging using the switched capacitor divider method shown in FIG. 8.

[0140] Referring to FIG. 10a, the electronic device (101) has a first period (Δt 01 The first charging capacitor (C) is charged for a short time by a large positive current flow through the buck converter (441), which is the first charging circuit, in )(1011). Bus )(451) is charged quickly, and the first charging capacitor (C) is charged for a long time. Bus A negative current flow of a small current due to the discharge of )(451) can be formed through the buck converter (441) to perform a first heating operation so that electrical energy due to the internal resistance of the battery (410) can be converted into thermal energy.

[0141] The electronic device (101) is in the second cycle (Δt) when the temperature of the battery (410) reaches the target temperature. 12 In )(1012), the first charging capacitor (C Bus It can stand by without performing the first heating operation based on the charging / discharging of )(451).

[0142] The electronic device (101) [requires] the first charging capacitor (C] by a large positive current flow through the buck converter (441), which is the first charging circuit, for a short time at the point (t2) when the temperature of the battery (410) drops to a critical temperature at which heating is required. Bus)(451) is charged quickly, and the first charging capacitor (C) is charged for a long time. Bus A negative current flow of a small current due to the discharge of )(451) is formed through the buck converter (441) to perform a first heating operation so that electrical energy due to the internal resistance of the battery (410) can be converted into thermal energy. The electronic device (101) performs a third period (Δt 23 )(1013) If the voltage level of the battery (410) drops to a level where it cannot perform the first heating operation, the first charging capacitor (C Bus It can stand by without performing the first heating operation based on the charging / discharging of )(451).

[0143] The electronic device (101) is in a state where the temperature of the battery (410) has dropped to a level where heating is required, but the voltage level of the battery (410) has dropped to a level where it cannot perform the first heating operation, in the fourth period (Δt 34 In )(1014) as well, the first charging capacitor (C Bus It can stand by without performing a heating operation based on the charging / discharging of )(451).

[0144] The electronic device (101) can perform a second heating operation at the time (t4) when external power is supplied from an external power source (e.g., the external power source (420) of FIG. 4). According to one example, the electronic device (101) can use external power to forcibly generate a dummy load that requires power consumption regardless of the user's request. The electronic device (101) can, for example, cause current to flow in an internal circuit adjacent to the battery (410) to generate heat. The electronic device (101) can, for example, cause a circulating current to be generated in a conductive pattern to raise the ambient temperature of the battery (410). The electronic device (101) can, for example, cause specific functions to be activated so that heat is generated by the operation according to specific functions. The electronic device (101) can, for example, cause power conversion circuits to operate by an external current flow in a low-temperature state of the battery (410) to generate heat. The electronic device (101) is in the fifth period (Δt 45 Charging of the battery (410) according to the charging profile can be performed in )(1015). The electronic device (101) can increase the temperature of the battery (410) by using the remaining power in addition to the power consumed for charging the battery (410) to generate a dummy load.

[0145] Referring to FIG. 10b, the electronic device (101) has a first period (Δt' 01 The second charging capacitor (C) is charged for a short time by a positive current flow of a large current through the first charging circuit, the buck converter (441), and / or the second charging circuit, the charge pump (443), in )(1021). SYS )(453) is charged quickly, and the second charging capacitor (C) is charged for a long time. SYSA negative current flow of a small current due to the discharge of )(453) can be formed through the buck converter (441) and / or charge pump (443) to perform a first heating operation so that electrical energy due to the internal resistance of the battery (410) can be converted into thermal energy. The electronic device (101) uses the charge pump (443) to perform a first charging capacitor (C Bus It can be charged quickly by applying pressure to )(451). The first charging capacitor (C Bus By applying pressure to )(451), the second charging capacitor (C) through the buck converter (441) SYS The charging of the )(453) can be performed quickly. The second charging capacitor (C SYS The charge accumulated in )(453) can be supplied to charge the battery (410) through a specific switching element (e.g., the seventh switching element (Q7) of FIG. 8). The second charging capacitor (C SYS The charge accumulated in )(453) can be supplied to charge the battery (410) through the buck converter (441) and charge pump (443).

[0146] The electronic device (101) is in the second cycle (Δt' when the temperature of the battery (410) reaches the target temperature. 12 In )(1022), the first charging capacitor (C Bus )(451) and / or second charging capacitor (C SYS It can stand by without performing the first heating operation based on the charging / discharging of )(453).

[0147] The electronic device (101) generates a second charging capacitor (C) by a positive current flow of a large current through a first charging circuit, a buck converter (441), and / or a second charging circuit, a charge pump (443), for a short period of time at the point (t2) when the temperature of the battery (410) drops to a critical temperature at which heating operation is required. SYS )(453) is charged quickly, and the second charging capacitor (C) is charged for a long time. SYSA negative current flow of a small current due to the discharge of )(453) can be formed through a buck converter (441) and / or a charge pump (443) to perform a first heating operation so that electrical energy due to the internal resistance of the battery (410) can be converted into thermal energy. The first heating operation may be based on converting electrical energy due to the internal resistance of the battery (410) into thermal energy. The electronic device (101) performs a third period (Δt' 23 )(1023) If the voltage level of the battery (410) drops to a level where it cannot perform the first heating operation, the first charging capacitor (C Bus )(451) and / or second charging capacitor (C SYS It can stand by without performing the first heating operation based on the charging / discharging of )(453).

[0148] The electronic device (101) is in a state during the fourth period (Δt') where the temperature of the battery (410) has dropped to a level where a heating operation is required, but the voltage level of the battery (410) has dropped to a level where the first heating operation cannot be performed. 34 In )(1024) as well, the first charging capacitor (C Bus )(451) and / or second charging capacitor (C SYS It can stand by without performing the first heating operation based on the charging / discharging of )(453).

[0149] The electronic device (101) charges the first charging capacitor (C) when charging the battery (410). Bus )(451) and / or second charging capacitor (C SYS A semiconductor device (e.g., the seventh semiconductor device (Q7) of FIG. 8) can be controlled so that a path is formed for the current flow supplied by )(453) to be supplied to the battery (410). For example, in response to control of the electronic device (100), the semiconductor device can be turned on during the charging operation of the battery (410) and turned off during the discharging operation of the battery. Accordingly, as illustrated, the flow of current (I) through the semiconductor deviceQBAT ) can occur only during the charging operation of the battery (410).

[0150] The electronic device (101) can perform a second heating operation at the time (t4) when external power is supplied from an external power source (e.g., the external power source (420) of FIG. 4). According to one example, the electronic device (101) can use external power to forcibly generate a dummy load that requires power consumption regardless of the user's request. The electronic device (101) can, for example, cause current to flow in an internal circuit adjacent to the battery (410) to generate heat. The electronic device (101) can, for example, cause a circulating current to be generated in a conductive pattern to raise the ambient temperature of the battery (410). The electronic device (101) can, for example, cause specific functions to be activated so that heat is generated by the operation according to specific functions. The electronic device (101) can, for example, cause power conversion circuits to operate by an external current flow in a low-temperature state of the battery (410) to generate heat. The electronic device (101) is in the fifth period (Δt' 45 In )(1025), charging of the battery (410) according to the charging profile can be performed. The electronic device (101) can increase the temperature of the battery (410) by using the remaining power in addition to the power consumed for charging the battery (410) to generate a dummy load.

[0151] FIG. 11 is a drawing to explain that charging time can be shortened by applying an electronic device according to one embodiment (e.g., the electronic device (400) of FIG. 4).

[0152] Referring to FIG. 11, the first graph (1110) shows a change in the amount of current used to charge the battery (410) during the charging time interval (or charging cycle) due to the application of a general method, and the second graph (1120) shows a change in the amount of current used to charge the battery (410) during the charging time interval due to the application of various embodiments proposed in this document. It can be seen that the amount of current according to the first and second graphs (1110, 1120) does not exceed the amount of current corresponding to the cell limit shown in the fifth graph (1150).

[0153] According to the first graph (110) and the second graph (1120), from the charging start time (1160), the amount of current supplied for charging the battery (410) by the two methods in section A is similar. However, due to the reduced resistance caused by the method proposed as an embodiment in this document, it can be seen that the amount of current in section B or section D, which corresponds to the CV section, is relatively increased compared to when the general method is applied.

[0154] The third graph (1130) shows the change in the voltage level of the battery (410) during the charging period due to the application of a general method, and the fourth graph (1140) shows the change in the voltage level of the battery (410) during the charging period due to the application of various embodiments proposed in this document. By referring to the third graph (1130) and the fourth graph (1140), it can be confirmed that the charging speed of the battery (410) according to the two methods is similar.

[0155] Therefore, when charging from the midpoint using the proposed method, the battery temperature is rapidly raised to the optimal point, and the charging current is increased within a defined battery safety range, thereby shortening the charging time. In this process, artificially increasing heat generation by the proposed method allows for a faster charging experience without issues within a temperature range that guarantees the safety of the battery (410) and the system, as most systems are designed for heat dissipation when the charging power is at its highest.

[0156] According to one example, the electronic device (101) may include a battery (410). The electronic device (101) may include at least one sensor including a temperature sensor for measuring the temperature of the battery (410). The electronic device (101) may include a charging circuit (440) configured to form a positive current flow by discharging from the battery (410) and to form a negative current flow for charging the battery (410). The electronic device (101) may include at least one charging element (450) configured to be charged by the positive current flow and to form the negative current flow by discharging. The electronic device (101) may include a memory (130) including one or more storage media for storing instructions. The electronic device (101) may include at least one processor (120) including a processing circuit. When the above instructions are executed individually or collectively by at least one processor, the electronic device may be caused to perform at least one operation. The at least one operation may include an operation to determine whether a heating operation is required by considering the temperature of the battery (410) and the voltage level of the battery (410). The at least one operation may include an operation to control the charging circuit (440) so that discharge from the battery (410) is made at a first current level in a second time interval (Δt1, Δt3, or Δt5, Δt7) which is relatively shorter than the first time interval (Δt2 or Δt6) in which the negative current flow is formed, as determined that the heating operation is required. The first current level may be relatively larger than the second current level to be supplied to the battery (410) for charging the battery (410).

[0157] According to one example, when the instructions are executed individually or collectively by at least one processor (120), the electronic device (101) may be caused to perform an operation to control the charging circuit (440) so that discharge from the battery (410) and / or charging of the battery (410) is stopped in response to the temperature of the battery (410) reaching a specific temperature due to the heating operation.

[0158] According to one example, when the instructions are executed individually or collectively by at least one processor (120), the electronic device (101) may be caused to perform an operation to control the charging circuit (440) so that discharge from the battery (410) and / or charging of the battery (410) is stopped in response to the voltage level of the battery (410) dropping below a specific voltage level due to the heating operation.

[0159] According to one example, the battery (410) may be configured to generate heat in its internal resistance due to the current flowing into the battery (410) in the first time period or the current flowing out of the battery (410) in the second time period.

[0160] According to one example, when the above instructions are executed individually or collectively by at least one processor (120), the electronic device (101) may be caused to perform an operation of controlling the charging circuit (440) so that the first time interval and the second time interval are alternately repeated while the heating operation is performed.

[0161] According to one example, the charging circuit (440) may include a buck converter as the first charging circuit (441).

[0162] According to one example, the charging circuit (440) may include a charge pump as a second charging circuit (443).

[0163] According to one example, a semiconductor device (Q7) configured to open or close a path provided to transfer current output from the first charging circuit (441) to the battery (410) may be included.

[0164] According to one example, the at least one charging element (450) is a first charging capacitor (C) provided between the connection terminals (178) of the first charging circuit (443) for power supply by an external power source (420). Bus It may include )(451).

[0165] According to one example, the at least one charging element (450) is charged by the positive current flow during the second time interval inside and / or outside the first charging circuit (443), and is provided to discharge to form the negative current flow to the semiconductor element (Q7) during the first time interval. At least one second charging capacitor (C SYS It may include )(453).

[0166] According to one example, when the instructions are executed individually or collectively by at least one processor (120), the electronic device (101) may be caused to perform an action that activates a specific function, a specific component, and / or a specific operation that can be provided by the electronic device (101) using the external power when external power is supplied from the external power source (420) through the connection terminal (178).

[0167] According to one example, when the instructions are executed individually or collectively by at least one processor (120), the electronic device (101) may be caused to perform an operation to control the charging circuit (440) so that current circulation occurs in the first charging circuit (441) and the second charging circuit (443) using the external power when external power is supplied from the external power source (420) through the connection terminal (178).

[0168] According to one example, the ratio of the first time interval and the second time interval may be 10:1.

[0169] According to one example, a method of operation of an electronic device may be provided. The method may include an operation of determining whether a heating operation is required by considering the temperature of the battery (410) and the voltage level of the battery (410). The method may include an operation of forming a positive current flow from the battery (410) by a first current level during a first time interval (Δt1, Δt3 or Δt5, Δt7) as determined that the self-heating is required. The method may include an operation of forming a negative current flow to the battery (410) by a second current level that is relatively lower than the first current level during a second time interval (Δt2 or Δt6) that is continuous with the first time interval (Δt1, Δt3 or Δt5, Δt7) and is relatively longer than the first time interval (Δt1, Δt3 or Δt5, Δt7).

[0170] According to one example, the method may include an operation to stop discharging from the battery (410) and / or charging the battery (410) in response to the temperature of the battery (410) reaching a specific temperature due to the heating operation.

[0171] According to one example, the method may include an operation to stop discharging from the battery (410) and / or charging the battery (410) in response to the voltage level of the battery (410) dropping below a specific voltage level due to the heating operation.

[0172] According to one example, the method may include an operation that causes self-heating to occur in the internal resistance of the battery (410) due to current flowing out from the battery (410) in the first time interval or current flowing into the battery (410) in the second time interval.

[0173] According to one example, the method may include an operation to control the first time interval and the second time interval to alternately repeat while the heating operation is performed.

[0174] According to one example, the method may include an operation to activate a specific function, a specific component, and / or a specific operation that can be provided by the electronic device (101) using the external power when external power is supplied from an external power source (420).

[0175] According to one example, the method may include an operation in which, when external power is supplied from the external power source (420), current circulation is made in the first charging circuit (441) and the second charging circuit (443) using the external power.

[0176] According to one example, the ratio of the first time interval and the second time interval may be 10:1.

[0177] According to one example, a storage medium for storing computer-readable instructions may be provided. The instructions may cause the electronic device to perform at least one operation when executed by at least part of at least one processor of the electronic device. The at least one operation may include an operation to determine whether a heating operation is required by considering the temperature of the battery (410) and the voltage level of the battery (410). The at least one operation may include an operation to form a positive current flow from the battery (410) by a first current level during a first time interval (Δt1, Δt3 or Δt5, Δt7) as determined that the heating operation is required. The above at least one operation may include an operation that forms a negative current flow into the battery (410) by a second current level that is relatively lower than the first current level during a second time interval (Δt2 or Δt6) that is relatively longer than the first time interval (Δt1, Δt3 or Δt5, Δt7) and is continuous with the first time interval (Δt1, Δt3 or Δt5, Δt7).

[0178] The embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of said items unless the relevant context clearly indicates otherwise. In this document, 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 each include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used simply to distinguish said components from other said components and do not limit said components in any other aspect (e.g., importance or order). Where any (e.g., 1st) component is referred to as “coupled” or “connected” to another (e.g., 2nd) component, with or without the terms “functionally” or “communicationly,” it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0179] As used in one embodiment of this document, the term “module” may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A module may be a component formed integrally, or a minimum unit of said component or a part thereof that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0180] One embodiment of the present document may be implemented as software comprising one or more instructions stored in a storage medium (e.g., memory (230)) readable by a machine (e.g., electronic device (200)). For example, a processor (e.g., processor (210)) of the machine (e.g., electronic device (200)) may call at least one of the one or more instructions stored from the storage medium and execute it. This enables the machine to be operated to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. The storage medium readable by the machine may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' simply means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily.

[0181] According to one embodiment, the method according to one embodiment disclosed herein may be provided by being included in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or distributed online (e.g., download or upload) through an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily created on a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0182] According to one embodiment, each component (e.g., module or program) of the components described above may include a singular or multiple entities, and some of the multiple entities may be separated and placed in other components. According to one embodiment, one or more of the components or operations among the aforementioned components may be omitted, or one or more other components or operations may be added. Generally or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the multiple components in the same or similar manner as those performed by the corresponding component among the multiple components prior to integration. According to one embodiment, operations performed by the module, program, or other components may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In an electronic device (101), Battery (410); At least one sensor including a temperature sensor for measuring the temperature of the battery (410); A charging circuit (440) configured to form a positive current flow by discharge from the battery (410) and to form a negative current flow for charging the battery (410); At least one charging element (450) configured to be charged by the above positive current flow and to form the above negative current flow by discharging; Memory (130) comprising one or more storage media for storing instructions; and It includes at least one processor (120) including a processing circuit, and When the above instructions are executed individually or collectively by at least one processor (120), the electronic device (100) is caused to perform at least one operation, and The above at least one operation is, An operation to determine whether a heating operation is required by considering the temperature of the battery (410) and the voltage level of the battery (410); and An operation to control the charging circuit (440) so that discharge from the battery (410) occurs at a first current level in a second time interval (Δt1, Δt3 or Δt5, Δt7) that is relatively shorter than the first time interval (Δt2 or Δt6) in which the negative current flow is formed, as determined that the above heating operation is necessary. Includes, Here, the electronic device (101) has a first current level that is relatively larger than a second current level to be supplied to the battery (410) for charging the battery (410).

2. In Paragraph 1, When the above instructions are executed individually or collectively by at least one processor (120), the electronic device (101) is made to, An operation to control the charging circuit (440) so that discharge from the battery (410) and / or charging of the battery (410) is stopped in response to the temperature of the battery (410) reaching a specific temperature due to the above heating operation. An electronic device (101) that causes to perform.

3. In Paragraph 1 or 2, When the above instructions are executed individually or collectively by at least one processor (120), the electronic device (101) is made to, An operation to control the charging circuit (440) so that discharge from the battery (410) and / or charging of the battery (410) is stopped in response to the voltage level of the battery (410) dropping below a specific voltage level due to the above heating operation. An electronic device (101) that causes to perform.

4. In any one of paragraphs 1 through 3, When the above instructions are executed individually or collectively by at least one processor (120), the electronic device (101) is made to, An operation to control the charging circuit (440) so that the first time interval and the second time interval are alternately repeated while the above heating operation is performed. Causing to perform, An electronic device (101) configured to generate heat in the internal resistance of the battery (410) due to the current flowing into the battery (410) in the first time period or the current flowing out of the battery (410) in the second time period.

5. In any one of paragraphs 1 through 4, The above charging circuit (440) is, A buck converter is included as the first charging circuit (441), and a charge pump is included as the second charging circuit (443). The above at least one charging element (450) is, A first charging capacitor (C) provided between the connection terminals (178) of the first charging circuit (443) for power supply by an external power source (420). Bus )(451); and At least one second charging capacitor (C) arranged to be charged by the positive current flow during the second time interval inside and / or outside the first charging circuit (443) and discharged to form the negative current flow to the semiconductor device (Q7) during the first time interval. SYS Includes )(453), An electronic device (101) further comprising a semiconductor element (Q7) configured to open or close a path provided to transmit current output from the first charging circuit (441) to the battery (410).

6. In any one of paragraphs 1 through 5, When the above instructions are executed individually or collectively by at least one processor (120), the electronic device (101) is made to, When external power is supplied from the external power source (420) through the connection terminal (178), the operation of using the external power to activate specific functions, specific components, and / or specific operations that can be provided by the electronic device (101). An electronic device (101) that causes to perform.

7. In Paragraph 5, When the above instructions are executed individually or collectively by at least one processor (120), the electronic device (101) is made to, When external power is supplied from the external power source (420) through the connection terminal (178), the operation of controlling the charging circuit (440) so that current circulation occurs in the first charging circuit (441) and the second charging circuit (443) using the external power. An electronic device (101) that causes to perform.

8. In the method of operating the electronic device (101), An operation to determine whether a heating operation is required by considering the temperature of the battery (410) and the voltage level of the battery (410); As it is determined that the above heating operation is necessary, an operation to form a positive current flow from the battery (410) by a first current level during a first time interval (Δt1, Δt3 or Δt5, Δt7); and A method comprising an operation of forming a negative current flow into the battery (410) by a second current level that is relatively lower than the first current level during a second time interval (Δt2 or Δt6) that is continuous with the first time interval (Δt1, Δt3 or Δt5, Δt7) and relatively longer than the first time interval (Δt1, Δt3 or Δt5, Δt7).

9. In Paragraph 8, A method comprising an operation to stop discharging from the battery (410) and / or charging the battery (410) in response to the temperature of the battery (410) reaching a specific temperature due to the above heating operation.

10. In Paragraph 8 or 9, A method comprising an operation to stop discharging from the battery (410) and / or charging the battery (410) in response to the voltage level of the battery (410) dropping below a specific voltage level due to the above heating operation.

11. In any one of paragraphs 8 through 10, An operation to cause self-heating to occur in the internal resistance of the battery (410) due to the current flowing out from the battery (410) in the first time interval or the current flowing into the battery (410) in the second time interval; and An operation to control the first time interval and the second time interval to repeat alternately while the above heating operation is performed. A method including 12. In any one of paragraphs 8 through 11, A method comprising, when external power is supplied from an external power source (420), using the external power to activate a specific function, a specific component, and / or a specific operation that can be provided by the electronic device (101).

13. In Paragraph 12, A method comprising the operation of, when external power is supplied from the external power source (420), using the external power to cause current circulation in the first charging circuit (441) and the second charging circuit (443).

14. In a storage medium storing computer-readable instructions, When the above instructions are executed by at least part of at least one processor (130) of the electronic device (101), the electronic device (101) causes at least one operation to be performed, and The above at least one operation is, An operation to determine whether a heating operation is required by considering the temperature of the battery (410) and the voltage level of the battery (410); As it is determined that the above heating operation is necessary, an operation to form a positive current flow from the battery (410) by a first current level during a first time interval (Δt1, Δt3 or Δt5, Δt7); and A storage medium comprising an operation of forming a negative current flow to the battery (410) by a second current level that is relatively lower than the first current level during a second time interval (Δt2 or Δt6) that is continuous with the first time interval (Δt1, Δt3 or Δt5, Δt7) and relatively longer than the first time interval (Δt1, Δt3 or Δt5, Δt7).

15. In Paragraph 14, A storage medium wherein at least one of the above operations includes the operations of claims 9 through 13.

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