Method for controlling charging of multiple batteries and electronic device using the same

Abstract

A method for controlling charging of multiple batteries and an electronic device to which the method is applied are provided. The electronic device includes a housing, multiple batteries arranged in the housing, a power management module for controlling the multiple batteries, multiple current limiting ICs for limiting the maximum intensity of the current flowing into each of the multiple batteries, and at least one processor operably connected to the multiple batteries, the power management module, and the multiple current limiting ICs. The at least one processor can set the total charging current output from the power management module, set the individual charging currents flowing into each of the multiple batteries to be proportional to the total capacity of each of the multiple batteries, and recalculate the individual charging currents when the total charging current changes.

Description

Technical Field

[0001] The present disclosure relates to a method of controlling charging of a plurality of batteries and a technology for implementing an electronic device to which the method is applied. Background Art

[0002] When the electronic device is connected to an external power source, the battery can be charged. When the electronic device has multiple batteries, the multiple batteries can be charged at the same time. When charging, each of the multiple batteries can change the battery voltage individually, and a voltage difference may occur between the multiple batteries. Battery cell balancing can be performed between the multiple batteries to balance the voltages of the batteries. Battery cell balancing is a phenomenon in which a high-voltage battery is discharged and a low-voltage battery is charged to reduce the voltage difference between the batteries connected in parallel. Due to battery cell balancing, current can flow from a battery with a higher voltage to a battery with a lower voltage. Summary of the invention

[0003] Technical issues

[0004] Even if voltage imbalance among multiple batteries occurs while charging multiple batteries, the electronic device of the related art cannot manage the voltage imbalance among multiple batteries alone. When there is a voltage difference among multiple batteries, battery cell balancing may cause capacity loss among multiple batteries and accelerate battery degradation. The battery cell balancing phenomenon may continuously cause charging and discharging among batteries, which may cause rapid deterioration of battery life.

[0005] An aspect of the present disclosure is to solve at least the above problems and / or disadvantages and to provide at least the advantages described below. Therefore, one aspect of the present disclosure is to provide a method for minimizing a voltage difference between a plurality of batteries during charging by allocating a charging current corresponding to a capacity of each of the plurality of batteries when charging the plurality of batteries, and an electronic device to which the method is applied.

[0006] Another aspect of the present disclosure is to provide a method and an electronic device to which the method is applied, which minimizes a reduction in battery life due to battery cell balancing by variably minimizing a battery voltage difference corresponding to a charging mode when a voltage difference occurs between a plurality of batteries when charging a plurality of batteries to perform charging while minimizing battery cell balancing.

[0007] Technical Solution

[0008] According to one aspect of the present disclosure, an electronic device is provided. The electronic device includes a housing, a plurality of batteries disposed in the housing, a power management module for controlling the plurality of batteries, a plurality of current limiting integrated circuits (ICs) for limiting the maximum intensity of the current flowing into each of the plurality of batteries, and at least one processor operably connected to the plurality of batteries, the power management module, and the plurality of current limiting ICs. The at least one processor can set the total charging current output from the power management module, set the individual charging currents flowing into each of the plurality of batteries to be proportional to the total capacity of each of the plurality of batteries, and recalculate the individual charging currents when the total charging current changes.

[0009] According to another aspect of the present disclosure, an electronic device is provided. The electronic device includes a housing, a plurality of batteries arranged in the housing, a power management module for controlling the plurality of batteries, a plurality of current limiting ICs for limiting the maximum strength of the current flowing into each of the plurality of batteries, and at least one processor operably connected to the plurality of batteries, the power management module, and the plurality of current limiting ICs. The at least one processor can sense the voltage of the power management module and the voltage of each of the plurality of batteries, determine whether the mode is a first mode in which the voltage of the plurality of batteries is kept constant or a second mode in which the current is kept constant based on the voltage of the power management module, and when a voltage difference occurs during the process of charging the plurality of batteries, control the charging current of the battery with a higher voltage among the plurality of batteries corresponding to whether the mode is the first mode or the second mode.

[0010] Beneficial Effects

[0011] According to an embodiment of the present disclosure, each of the plurality of batteries may receive a charging current distributed corresponding to its capacity to minimize a voltage difference between the plurality of batteries.

[0012] Furthermore, according to the embodiments of the present disclosure, charging can be performed while reducing the voltage difference generated between a plurality of batteries, thereby minimizing the reduction in battery life caused by battery cell balancing during charging.

[0013] Furthermore, various effects directly or indirectly understood by the present disclosure can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a block diagram illustrating an electronic device in a network environment according to an embodiment of the present disclosure;

[0015] Figure 2 is a block diagram illustrating a power management module and a battery according to an embodiment of the present disclosure;

[0016] Figure 3 is another block diagram illustrating an electronic device according to an embodiment of the present disclosure;

[0017] Figure 4 is a view showing charging of a first battery and a second battery according to an embodiment of the present disclosure;

[0018] Figure 5 is a view showing blocking of charging of a first battery and charging of a second battery according to an embodiment of the present disclosure;

[0019] Figure 6 is a flowchart illustrating a method of setting a charging current of each of a plurality of batteries according to an embodiment of the present disclosure;

[0020] Figure 7 is a flow chart illustrating a method of charging multiple batteries according to an embodiment of the present disclosure;

[0021] Figure 8 is a view illustrating a method of charging a plurality of batteries in a first mode according to an embodiment of the present disclosure; and

[0022] Fig. 9 is a view illustrating a method of charging a plurality of batteries in a second mode according to an embodiment of the present disclosure.

[0023] Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures. DETAILED DESCRIPTION

[0024] Figure 1 is a block diagram illustrating electronic devices in a network environment according to an embodiment of the present disclosure.

[0025] Figure 1 1 is a block diagram illustrating an electronic device 101 in a network environment 100 according to various embodiments. Figure 1, the electronic device 101 in the network environment 100 may communicate with the electronic device 102 via the first network 198 (e.g., a short-range wireless communication network), or communicate with the electronic device 104 or the server 108 via the second network 199 (e.g., a long-range wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 via the server 108. According to an embodiment, the electronic device 101 may include a processor 120, a memory 130, an input device 150, a sound output device 155, a display device 160, an audio module 170, a sensor module 176, an interface 177, a haptic module 179, a camera module 180, a power management module 188, a battery 189, a communication module 190, a user identification module (SIM) 196, and / or an antenna module 197. In some embodiments, at least one of the components (e.g., the display device 160 or the camera module 180) may be omitted from the electronic device 101, or one or more other components may be added to the electronic device 101. In some embodiments, some of the components may be implemented as a single integrated circuit.For example, the sensor module 176 (eg, a fingerprint sensor, an iris sensor, or an illumination sensor) may be implemented to be embedded in the display device 160 (eg, a display).

[0026] The processor 120 may run, for example, software (e.g., program 140) to control at least one other component (e.g., hardware component or software component) of the electronic device 101 connected to the processor 120, and may perform various data processing or calculations. According to an embodiment, as at least part of the data processing or calculation, the processor 120 may load a command or data received from another component (e.g., sensor module 176 or communication module 190) into the volatile memory 132, process the command or data stored in the volatile memory 132, and store the result data in the non-volatile memory 134. According to an embodiment, the processor 120 may include a main processor 121 (e.g., a central processing unit (CPU) or an application processor (AP)) and an auxiliary processor 123 (e.g., a graphics processing unit (GPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is independent of or combined with the main processor 121 in operation. Additionally or alternatively, the auxiliary processor 123 may be adapted to consume less power than the main processor 121, or adapted to be specifically used for a specified function. The auxiliary processor 123 may be implemented separately from the main processor 121 , or as part of the main processor 121 .

[0027] When the main processor 121 is in an inactive (e.g., sleep) state, the auxiliary processor 123 may control at least some of the functions or states related to at least one component (e.g., display device 160, sensor module 176, or communication module 190) among the components of the electronic device 101 (not the main processor 121), or when the main processor 121 is in an active state (e.g., running an application), the auxiliary processor 123 may control at least some of the functions or states related to at least one component (e.g., display device 160, sensor module 176, or communication module 190) among the components of the electronic device 101 together with the main processor 121. According to an embodiment, the auxiliary processor 123 (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., camera module 180 or communication module 190) that is functionally related to the auxiliary processor 123.

[0028] The memory 130 may store various data used by at least one component of the electronic device 101 (e.g., the processor 120 or the sensor module 176). The various data may include, for example, software (e.g., the program 140) and input data or output data for commands related thereto. The memory 130 may include a volatile memory 132 or a nonvolatile memory 134.

[0029] The program 140 may be stored as software in the memory 130 and may include, for example, an operating system (OS) 142, middleware 144, or application 146. The nonvolatile memory may include one or more of the internal memory 136 and the external memory 138.

[0030] The input device 150 may receive commands or data from outside the electronic device 101 (e.g., a user) to be used by other components of the electronic device 101 (e.g., the processor 120). The input device 150 may include, for example, a microphone, a mouse, a keyboard, or a digital pen (e.g., a stylus).

[0031] The sound output device 155 can output a sound signal to the outside of the electronic device 101. The sound output device 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as playing multimedia or playing records, and the receiver can be used for incoming calls. Depending on the embodiment, the receiver can be implemented as a separate part from the speaker, or as a part of the speaker.

[0032] The display device 160 may visually provide information to the outside of the electronic device 101 (e.g., a user). The display device 160 may include, for example, a display, a holographic device, or a projector, and a control circuit for controlling a corresponding one of the display, the holographic device, and the projector. According to an embodiment, the display device 160 may include a touch circuit adapted to detect a touch or a sensor circuit (e.g., a pressure sensor) adapted to measure the strength of a force caused by a touch.

[0033] The audio module 170 may convert sound into an electrical signal, or vice versa. According to an embodiment, the audio module 170 may obtain sound via the input device 150, or output sound via the sound output device 155 or an earphone of an external electronic device (e.g., electronic device 102) directly (e.g., wired) or wirelessly connected to the electronic device 101.

[0034] The sensor module 176 may detect an operating state (e.g., power or temperature) of the electronic device 101 or an environmental state (e.g., a state of a user) outside the electronic device 101, and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor.

[0035] The interface 177 may support one or more specific protocols to be used to connect the electronic device 101 directly (e.g., wired) or wirelessly with an external electronic device (e.g., the electronic device 102). According to an embodiment, the interface 177 may include, for example, a high-definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface.

[0036] The connection end 178 may include a connector, wherein the electronic device 101 can be physically connected to an external electronic device (e.g., the electronic device 102) via the connector. According to an embodiment, the connection end 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0037] The haptic module 179 may convert the electrical signal into mechanical stimulation (eg, vibration or motion) or electrical stimulation that can be recognized by the user via his sense of touch or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

[0038] The camera module 180 may capture still images or moving images. According to embodiments, the camera module 180 may include one or more lenses, an image sensor, an image signal processor, or a flash.

[0039] The power management module 188 may manage power supply to the electronic device 101. According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0040] The battery 189 may power at least one component of the electronic device 101. According to an embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0041] The communication module 190 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108), and perform communication via the established communication channel. The communication module 190 may include one or more communication processors capable of operating independently from the processor 120 (e.g., an application processor (AP)) and supporting direct (e.g., wired) communication or wireless communication. According to an embodiment, the communication module 190 may include a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). A corresponding one of these communication modules can communicate with an external electronic device via a first network 198 (e.g., a short-range communication network such as Bluetooth, Wireless Fidelity (Wi-Fi) Direct, or Infrared Data Association (IrDA)) or a second network 199 (e.g., a long-range communication network such as a cellular network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN))). These various types of communication modules can be implemented as a single component (e.g., a single chip), or these various types of communication modules can be implemented as multiple components separated from each other (e.g., multiple chips). The wireless communication module 192 can identify and authenticate the electronic device 101 in a communication network (such as the first network 198 or the second network 199) using user information (e.g., an International Mobile Subscriber Identity (IMSI)) stored in the user identification module 196.

[0042] The antenna module 197 may transmit or receive a signal or power to or from the outside of the electronic device 101 (e.g., an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a radiating element formed of a conductive material or a conductive pattern formed in or on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment, the antenna module 197 may include a plurality of antennas. In this case, at least one antenna suitable for a communication scheme used in a communication network (such as the first network 198 or the second network 199) may be selected from the plurality of antennas by, for example, the communication module 190 (e.g., the wireless communication module 192). A signal or power may then be transmitted or received between the communication module 190 and the external electronic device via the selected at least one antenna. According to an embodiment, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element may be additionally formed as a part of the antenna module 197.

[0043] At least some of the above components may be connected to each other via an inter-peripheral communication scheme (e.g., a bus, a general purpose input output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)) and communicatively transmit signals (e.g., commands or data) therebetween.

[0044] According to an embodiment, a command or data may be sent or received between the electronic device 101 and the external electronic device 104 via the server 108 connected to the second network 199. Each of the electronic device 102 and the electronic device 104 may be a device of the same type as the electronic device 101, or a device of a different type from the electronic device 101. According to an embodiment, all or some operations to be executed in the electronic device 101 may be executed in one or more of the external electronic device 102, the external electronic device 104, or the server 108. For example, if the electronic device 101 should automatically execute a function or service or should execute a function or service in response to a request from a user or another device, the electronic device 101 may request the one or more external electronic devices to execute at least part of the function or service instead of executing the function or service, or the electronic device 101 may request the one or more external electronic devices to execute at least part of the function or service in addition to executing the function or service. The one or more external electronic devices that receive the request may execute the requested at least part of the function or service, or execute another function or another 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 at least a partial reply to the request with or without further processing the result. To this end, for example, cloud computing technology, distributed computing technology, or client-server computing technology may be used.

[0045] Figure 2 is a block diagram illustrating a power management module and a battery according to an embodiment of the present disclosure.

[0046] Reference Figure 1 and Figure 2 , block diagram 200 shows that the power management module 188 may include a charging circuit 210, a power conditioner 220, and / or a power meter 230. The charging circuit 210 may charge the battery 189 by using power supplied from an external power source outside the electronic device 101. According to an embodiment, the charging circuit 210 may select a charging scheme (e.g., normal charging or fast charging) based at least in part on the type of the external power source (e.g., a power outlet, USB, or wireless charging), a power value that can be provided from the external power source (e.g., about 20 watts or more), or a property of the battery 189, and may charge the battery 189 using the selected charging scheme. The external power source may be directly connected to the electronic device 101 via the connection terminal 178, for example, or wirelessly connected to the electronic device 101 via the antenna module 197.

[0047] The power regulator 220 can generate a variety of power with different voltage levels or different current levels by adjusting the voltage level or current level of the power supplied from the external power source or the battery 189. The power regulator 220 can adjust the voltage level or current level of the power supplied from the external power source or the battery 189 to different voltage levels or current levels suitable for each of some components included in the electronic device 101. According to an embodiment, the power regulator 220 can be implemented in the form of a low dropout (LDO) regulator or a switching regulator. The power meter 230 can measure the use status information about the battery 189 (for example, the capacity of the battery 189, the number of times of charging or discharging, the voltage or the temperature).

[0048] The power management module 188 may use, for example, the charging circuit 210, the power conditioner 220, or the power meter 230 to determine charging status information related to the charging of the battery 189 (e.g., life, overvoltage, low voltage, overcurrent, overcharge, overdischarge, overheat, short circuit, or expansion) based at least in part on the measured usage status information about the battery 189. The power management module 188 may determine whether the state of the battery 189 is normal or abnormal based at least in part on the determined charging status information. If the state of the battery 189 is determined to be abnormal, the power management module 188 may adjust the charging of the battery 189 (e.g., reduce the charging current or voltage, or stop charging). According to an embodiment, at least some of the functions of the power management module 188 may be performed by an external control device (e.g., the processor 120).

[0049] According to an embodiment, the battery 189 may include a protection circuit module (PCM) 240. The PCM 240 may perform one or more of various functions (e.g., a pre-cutoff function) for preventing performance deterioration or damage of the battery 189. Additionally or alternatively, the PCM 240 may be configured as at least a portion of a battery management system (BMS), wherein the BMS is capable of performing various functions including cell balancing, measurement of battery capacity, counting of the number of times of charging or discharging, measurement of temperature, or measurement of voltage.

[0050] According to an embodiment, at least a portion of the charging state information or the usage state information about the battery 189 may be measured using a corresponding sensor (e.g., a temperature sensor) of the sensor module 176, the power meter 230, or the power management module 188. According to an embodiment, the corresponding sensor (e.g., a temperature sensor) of the sensor module 176 may be included as a part of the PCM 240, or may be arranged near the battery 189 as a separate device.

[0051] Figure 3 is another block diagram illustrating an electronic device according to an embodiment of the present disclosure.

[0052] Reference Figure 1 , Figure 2 and Figure 3 , the electronic device 101 (eg, Figure 1 The electronic device 101 may include a plurality of batteries 320 and a power management module 188 arranged in a housing 310 , a plurality of sensors 330 , a plurality of current limiting ICs 340 , and a processor 120 .

[0053] In an embodiment, the housing 310 may define the appearance of the electronic device 101. The housing 310 may include a front plate forming a front surface or a first surface of the electronic device 101, a back plate forming a rear surface or a second surface of the electronic device 101, and a side member surrounding a space between the front plate and the back plate. The housing 310 may protect the plurality of batteries 320, the power management module 188, the plurality of sensors 330, the plurality of current limiting ICs 340, and the processor 120 from external impacts.

[0054] In an embodiment, a plurality of batteries 320 may be arranged in the housing 310. The plurality of batteries 320 may include a first battery 321 and a second battery 322. However, the embodiment is not limited thereto, and the plurality of batteries 320 may include three or more batteries. In this case, the electronic device 101 may operate as a multi-battery.

[0055] In an embodiment, each of the first battery 321 and the second battery 322 can independently provide the power required to operate the electronic device 101. Each of the first battery 321 and the second battery 322 can be charged independently. Each of the first battery 321 and the second battery 322 can have different capacities. For example, the first battery 321 can be a main battery and the second battery 322 can be a sub battery. Each of the first battery 321 and the second battery 322 can discharge at different rates.

[0056] In an embodiment, the first battery 321 and the second battery 322 may perform a balancing operation to match battery levels with each other. When the first battery 321 and the second battery 322 perform a balancing operation, a battery level difference between the first battery 321 and the second battery 322 may be reduced.

[0057] In an embodiment, the power management module 188 may include a charging circuit 210, a power conditioner 220, and a power meter 230. The power management module 188 may be implemented as a power management integrated circuit (PMIC). The power management module 188 may control a plurality of batteries 320. For example, the power management module 188 may control the battery level of each of the first battery 321 and the second battery 322. The power management module 188 may control the charging and / or discharging of each of the first battery 321 and the second battery 322 to control the battery level of each of the first battery 321 and the second battery 322. The power management module 188 may control the charging and / or discharging of each of the first battery 321 and the second battery 322 by using a plurality of current limiting ICs 340.

[0058] In an embodiment, the plurality of sensors 330 may measure a current flowing through a designated portion and / or a voltage of a designated portion. The plurality of sensors 330 may include first to third sensors 331 , 332 , and 333 .

[0059] In an embodiment, the plurality of current limiting ICs 340 may control the current flowing into the plurality of batteries 320. The plurality of current limiting ICs 340 may limit the maximum strength of the current flowing into each of the plurality of batteries 320. The plurality of current limiting ICs 340 may include a first current limiting IC 341 and a second current limiting IC 342. However, the present disclosure is not limited thereto, and when the electronic device 101 operates with multiple batteries, the plurality of current limiting ICs 340 may include three or more current limiting ICs.

[0060] In an embodiment, the first sensor 331 may measure the sum of currents flowing from the power management module 188 to the plurality of batteries 320 and the total voltage of the plurality of batteries 320 . Figure 3 A case where the first sensor 331 is disposed alone is shown. However, the present disclosure is not limited thereto, and the first sensor 331 may be included in the power meter 230. In this case, the power meter 230 may measure the sum of currents flowing into the plurality of batteries 320 and the total voltage of the plurality of batteries 320.

[0061] In an embodiment, the second sensor 332 may measure a current flowing into the first battery 321 and a voltage of the first battery 321 . Figure 3 The case where the second sensor 332 is separately arranged is shown. However, the present disclosure is not limited thereto, and the second sensor 332 may be included in the first current limiting IC 341. In this case, the first current limiting IC 341 may measure the current flowing into the first battery 321 and the voltage of the first battery 321.

[0062] In an embodiment, the third sensor 333 may measure a current flowing into the second battery 322 and a voltage of the second battery 322 . Figure 3A case where the third sensor 333 is provided separately is shown. However, the present disclosure is not limited thereto, and the third sensor 333 may be included in the second current limiting IC 342. In this case, the second current limiting IC 342 may measure the current flowing into the second battery 322 and the voltage of the second battery 322.

[0063] In an embodiment, the first current limiting IC 341 may limit the current flowing into the first battery 321. The first current limiting IC 341 may set the first battery 321 to a charging state or a discharging state. The first current limiting IC 341 may limit the maximum intensity of the current flowing into the first battery 321 from the power management module 188 in the charging state. The first current limiting IC 341 may limit the balancing operation between the first battery 321 and the second battery 322 in the charging state. The first current limiting IC 341 may send information about the voltage of the first battery 321, the charging current flowing into the first battery 321, and / or the discharging current output from the first battery 321 to the processor 120.

[0064] In an embodiment, the second current limiting IC 342 may limit the current flowing into the second battery 322. The second current limiting IC 342 may set the second battery 322 to a charging state or a discharging state. The second current limiting IC 342 may limit the maximum intensity of the current flowing into the second battery 322 from the power management module 188 in the charging state. The second current limiting IC 342 may limit the balancing operation between the first battery 321 and the second battery 322 in the charging state. The second current limiting IC 342 may send information about the voltage of the second battery 322, the charging current flowing into the second battery 322, and / or the discharging current output from the second battery 322 to the processor 120.

[0065] In an embodiment, the processor 120 is operably connected to a plurality of batteries 320, a power management module 188, a plurality of temperature sensors 330, and a plurality of current limiting ICs 340. The processor 120 may obtain information about the plurality of batteries 320 through the charging circuit 210 and the power meter 230 of the power management module 188. For example, the processor 120 may know information about the battery voltage, charging current, discharging current, and / or the sum of the battery levels of the first battery 321 and the second battery 322. The processor 120 may set the maximum intensity of the charging current flowing into the first battery 321 and the second battery 322 and / or whether to block the charging current.

[0066] In an embodiment, in the electronic device 101 applying a multi-battery structure, each battery may be charged independently in a parallel structure, resulting in different charging times between the batteries.

[0067] Figure 4 2 is a view illustrating charging of a first battery and a second battery according to an embodiment of the present disclosure.

[0068] Reference Figure 4 , block diagram 400 shows that the first battery 321 and the second battery 322 may have a voltage lower than the first voltage V1, which is a fully charged voltage. The power management module 188 may set both the first battery 321 and the second battery 322 to a charging state. The power management module 188 may allow a charging current to flow into the first battery 321 and the second battery 322.

[0069] In an embodiment, the power management module 188 may set the sum of the first charging current I1 flowing from the charging circuit 210 to the first battery 321 and the second charging current I2 flowing from the charging circuit 210 to the second battery 322 to charge the first battery 321 and the second battery 322. The first charging current I1 and the second charging current I2 flowing into the first battery 321 and the second battery 322 may vary according to the battery capacities of the first battery 321 and the second battery 322.

[0070] In an embodiment, the power management module 188 may set a charging current based on the capacities of the first battery 321 and the second battery 322. The power management module 188 may set the charging current to be less than or equal to the maximum current allowed by the first battery 321 and the second battery 322. The power management module 188 may set the charging current so that the first battery 321 and the second battery 322 are fully charged substantially at the same time. For example, when the remaining capacity until the first battery 321 is fully charged is the first capacity and the remaining capacity until the second battery 322 is fully charged is the second capacity, the power management module 188 may set the charging current flowing into the first battery 321 and the second battery 322 to be proportional to the first capacity and the second capacity. The sum of the charging currents flowing into the first battery 321 and the second battery 322 may be the sum of the first charging maximum setting current flowing into the first battery 321 and the second charging maximum setting current flowing into the second battery 322.

[0071] In an embodiment, a voltage difference may occur between the first battery 321 and the second battery 322. The charging current and the discharging current of the first battery 321 and the second battery 322 may be different from each other according to the impedance state of each of the first battery 321 and the second battery 322. For example, the first battery 321 may have a second voltage V2 lower than the first voltage V1, and the second battery 322 may have a third voltage V3 lower than the second voltage V2.

[0072] In an embodiment, current may flow from the first battery 321 having the second voltage V2 to the second battery 322 having the third voltage V3. Because current flows from the first battery 321 having a high voltage to the second battery 322 having a low voltage, cell balancing may occur, in which the second battery 322 is charged and the first battery 321 is discharged. As the voltage difference between the first battery 321 and the second battery 322 increases, cell balancing may increase. When cell balancing occurs between the first battery 321 and the second battery 322, the lifespan of the first battery 321 and the second battery 322 may be shortened, or the first battery 321 and the second battery 322 may be degraded.

[0073] Figure 5 is a view illustrating blocking of charging of a first battery and charging of a second battery according to an embodiment of the present disclosure.

[0074] Reference Figure 5 , block diagram 500 shows that the first battery 321 may have a first voltage V1 as a fully charged voltage. The second battery 322 may have a third voltage V3 lower than the first voltage V1. In each, the second voltage V2 is lower than the first voltage V1. The first battery 321 may be in a fully charged state, in which the voltage of the first battery 321 reaches the first voltage V1 as a fully charged voltage, and the inflow of the charging current is blocked, so that the first battery 321 is not charged. The second battery 322 may be in a charging state, in which the second battery 322 has a third voltage V3 lower than the first voltage V1 as a fully charged voltage, thereby introducing a charging current. The power management module 188 may measure the voltages of the first battery 321 and the second battery 322. The power management module 188 may set each of the first battery 321 and the second battery 322 to a fully charged state or a charging state based on the voltages of the first battery 321 and the second battery 322. For example, the power management module 188 may set the first battery 321 to a fully charged state, and set the second battery 322 to a charging state. The power management module 188 may block the charging current flowing into the first battery 321 and introduce the charging current into the second battery 322 by using the first current limiting IC 341 .

[0075] In an embodiment, when cell balancing between the first battery 321 and the second battery 322 during charging of the first battery 321 and the second battery 322 is minimized, the lifespan of the first battery 321 and the second battery 322 may be improved, and the first battery 321 and the second battery 322 may be prevented from being degraded. A processor (e.g., Figure 3The processor 120) may be configured to allow the first battery 321 and the second battery 322 to be charged while minimizing a voltage difference between the first battery 321 and the second battery 322 so as to minimize battery cell balancing between the first battery 321 and the second battery 322 during charging.

[0076] Figure 6 is a diagram showing a plurality of batteries (eg, Figure 3 Flow chart of a method for charging current of each of the first battery 321 and the second battery 322.

[0077] Reference Figure 6 In operation 610 of flowchart 600, an electronic device (eg, Figure 3 The electronic device 101 may be configured to receive power from a power management module (eg, Figure 3 The power management module 188) of the charging circuit (for example, Figure 3 For example, the sum of the first charging current I1 flowing from the charging circuit 210 to the first battery 321 and the second charging current I2 flowing into the second battery 322 can be set as the total charging current “I” so as to charge the first battery and the second battery (for example, Figure 3 The electronic device 101 (the first battery 321 and the second battery 322) is charged.

[0078] In an embodiment, the processor 120 may optimize the initial current setting at the start of charging for capacity by setting the total charging current “I” to minimize the voltage difference between the first battery 321 and the second battery 322 .

[0079] In operation 620, the electronic device 101 according to the embodiment may set respective charging currents flowing into each of the plurality of batteries 321 and 322 in proportion to the total capacity of each of the batteries 321 and 322. For example, when the first battery 321 has a first capacity C1, the second battery 322 has a second capacity C2, and the total charging current "I" is set, the first charging current I1 and the second charging current I2 may be set in proportion to the first capacity C1 and the second capacity C2.

[0080] In an embodiment, the first charging current I1 is a value obtained by multiplying a value obtained by dividing the first capacity C1 by the sum of the first capacity C1 and the second capacity C2 by the total charging current "I". The second charging current I2 may be a value obtained by multiplying a value obtained by dividing the second capacity C2 by the sum of the first capacity C1 and the second capacity C2 by the total charging current "I". For example, when the first battery 321 having a total capacity of 3,000mAh and the second battery 322 having a total capacity of 2,000mAh are charged with 2,500mAh, the first charging current I1 and the second charging current I2 may be calculated as follows.

[0081] Total charging current "I" set in charging circuit 210 = 2,500 mA

[0082] First charging current I1 = (3,000mAh / (3,000mAh+2,000mAh))*2500mA=1500mAh

[0083] Second charging current I2 = (2,000mAh / (3,000mAh+2,000mAh))*2,500mA=1,000mAh

[0084] In an embodiment, the processor 120 may distribute the total charging current "I" in proportion to the total capacity of each of the first battery 321 and the second battery 322, thereby setting the first charging current I1 and the second charging current I2 flowing into the first battery 321 and the second battery 322, respectively. The processor 120 may set the maximum current flowing into the first battery 321 and the second battery 322 by using a distribution algorithm. The processor 120 may set the first charging current I1 and the second charging current I2 without considering the current remaining capacity of the first battery 321 and the second battery 322.

[0085] In operation 630, the electronic device 101 according to an embodiment may determine whether the total charging current "I" has changed. The total charging current "I" set at the charging circuit 210 may change in real time with various events, such as the type of charging cable connected, the heating control algorithm of the processor 120, the communication module (e.g., Figure 1 The communication module 190 of the controller 120 may be a communication failure of the first battery 321 and / or the second battery 322, a defect of the connected charging line, a defect of the first battery 321 and / or the second battery 322, or a poor charging state, or a user's control. When the total charging current "I" changes (operation 630-Yes), the processor 120 may repeat operation 610. When the total charging current "I" remains constant (operation 630-No), the processor 120 may proceed to operation 640.

[0086] In an embodiment, whenever the total charging current "I" set at the charging circuit 210 changes, the processor 120 may recalculate the first charging current I1 and the second charging current I2 flowing into the first battery 321 and the second battery 322 in real time. Whenever the total charging current "I" set at the charging circuit 210 changes, the maximum charging current distribution algorithm of the processor 120 may be executed again. The processor 120 may set the current currently actually flowing in each of the first battery 321 and the second battery 322 to be proportional to the total capacity of each of the first battery 321 and the second battery 322 to control the voltages of the first battery 321 and the second battery 322 to be substantially the same in the charging operation.

[0087] In operation 640, the electronic device 101 according to the embodiment may maintain respective charging currents. The processor 120 may maintain a first charging current I1 and a second charging current I2. The processor 120 may be configured to allow the first battery 321 and the second battery 322 to receive a total charging current "I" divided by the capacity. The processor 120 may maintain the intensity of the first charging current I1 and the second charging current I2 flowing into the first battery 321 and the second battery 322, respectively, while keeping the total charging current "I" constant. In the processor 120, the processor 120 may minimize the charging imbalance between the first battery 321 and the second battery 322 by allowing the total charging current "I" set at the charging circuit 210 to flow into one of the first battery 321 or the second battery 322 again.

[0088] Figure 7 FIG. 2 is a diagram showing a plurality of batteries (eg, Figure 3 Flow chart of a method for charging a first battery 321 and a second battery 322).

[0089] Reference Figure 7 , the method of minimizing battery cell balancing may be applied assuming that the first battery 321 and the second battery 322 are in a charging state. When the battery cell balancing is performed by using a plurality of current limiting ICs (e.g., Figure 3 When the first current limiting IC 341 and the second current limiting IC 342 of the present invention block the discharge current, the current itself output from the first battery 321 and the second battery 322 may be blocked. In this case, the system current required for the operation of the electronic device 101 may be insufficient, so that the operation of the electronic device 101 may stop. The processor 120 may be configured to allow the method of minimizing the voltage difference between the first battery 321 and the second battery 322 to be applied only in the charging operation.

[0090] In operation 710 of flowchart 700, the electronic device 101 according to an embodiment may sense a power management module (eg, Figure 3The power management module 188 of the power management module 188 and the voltage of each of the batteries 321 and 322, and whether the mode is the first mode or the second mode can be determined based on the voltage of the power management module 188.

[0091] In an embodiment, when there is an imbalance between the voltages of the first battery 321 and the second battery 322, charging of the first battery 321 and the second battery 322 may be started. The processor 120 may detect the voltage of the charging circuit 210 of the power management module 188, the voltage of the first battery 321, and the voltage of the second battery 322.

[0092] In an embodiment, the processor 120 may determine whether the mode is a first mode of a constant voltage (CV) mode or a second mode of a constant current (CC) mode based on the voltage of the charging circuit 210 of the power management module 188. The processor 120 may control the charging speed of the first battery 321 or the second battery 322 according to which of the first mode and the second mode is to perform balanced charging between the first battery 321 and the second battery 322. The processor 120 may attempt to reduce the voltage difference between the first battery 321 and the second battery 322 in the first mode, and increase the charging speed of the first battery 321 and the second battery 322 in the second mode. According to the current total charging capacity of the first battery 321 and the second battery 322, the processor 120 may determine whether to reduce the voltage difference or increase the charging speed.

[0093] In operation 720, the electronic device 101 according to the embodiment may determine whether each voltage difference between the plurality of batteries 321 and 322 is greater than a first threshold voltage. The processor 120 may check whether the voltage difference between the first battery 321 and the second battery 322 is large. When the voltage difference between the first battery 321 and the second battery 322 is greater than the first threshold voltage (operation 720-Yes), the processor 120 may define the current state as a battery unbalanced state in which the voltage difference between the first battery 321 and the second battery 322 is large. When the voltage difference between the first battery 321 and the second battery 322 is greater than the first threshold voltage (operation 720-Yes), the processor 120 may proceed to operation 730. When the voltage difference between the first battery 321 and the second battery 322 is less than the first threshold voltage (operation 720-No), the processor 120 may define the current state as a battery balanced state in which the voltage difference between the first battery 321 and the second battery 322 is small. When the voltage difference between the first battery 321 and the second battery 322 is less than the first threshold voltage (operation 720 —No), the processor 120 may proceed to operation 725 .

[0094] In operation 725, the electronic device 101 according to the embodiment may perform charging. When the battery is in a balanced state, there is no need to perform an operation of reducing the voltage difference between the first battery 321 and the second battery 322 during charging. The processor 120 may determine that the voltage difference between the first battery 321 and the second battery 322 is within a normal range and perform normal charging.

[0095] In operation 730, the electronic device 101 according to the embodiment may determine whether the electronic device is in the first mode. The first mode may be a mode in which the charging voltage is kept constant because the voltage of the power management module 188 is equal to or greater than a specified ratio compared to the full charge voltage. The second mode may be a mode in which the charging current is kept constant because the voltage of the power management module 188 is equal to or less than a specified ratio compared to the full charge voltage. The processor 120 may prioritize battery cell balancing minimization in the first mode. The processor 120 may prioritize the fast charging time of all first batteries 321 and second batteries 322 in the second mode. When the processor 120 is in the first mode (operation 730-yes), the processor 120 may perform operation 735. When the processor 120 is in the second mode (operation 730-no), the processor 120 may perform operation 740.

[0096] In operation 735, the electronic device 101 according to the embodiment may block the charging current and the discharging current of the battery (e.g., the first battery 321) having a high voltage. When the voltage of the first battery 321 of the first battery 321 and the second battery 322 is large, the processor 120 may block the charging current to prevent the charging current from flowing into the first battery 321. When the processor 120 is in the first mode, the processor 120 may stop charging the first battery 321 and only charge the second battery 322 to quickly reduce the voltage difference between the first battery 321 and the second battery 322. For example, the processor 120 may place the first current limiting IC (e.g., Figure 3 The first current limiting IC 341 of the present invention is set to a supplement mode (the supplement mode is a mode of blocking current), thereby blocking the current flowing into the first battery 321. The processor 120 can be set to block the charging current and the discharging current of the first battery 321 within a specified time.

[0097] In an embodiment, the processor 120 may block the discharge current output from the first battery 321 by using the first current limiting IC 341. The processor 120 may block the discharge current of the first battery 321 to prevent the first battery 321 from being discharged due to the occurrence of battery cell balancing, through which current flows to the second battery 322 having a lower voltage than the first battery 321.

[0098] In an embodiment, the system current required by the electronic device 101 may be provided from the second battery 322. The processor 120 may control the power management module 188 to provide the system current from the external charging device so that the system current does not decrease.

[0099] In operation 740, the electronic device 101 according to the embodiment may limit the intensity of the charging current of the battery with a high voltage. When the voltage of the first battery 321 of the first battery 321 and the second battery 322 is high, the processor 120 may limit the charging current flowing into the first battery 321 to a predetermined size or less. In the second mode, the processor 120 may allow the second battery 322 to be charged while limiting the charging of the first battery 321, so that the voltage difference may be gradually reduced while the first battery 321 and the second battery 322 are quickly charged as a whole. When the voltage of the charging circuit 210 of the power management module 188 is in the second mode, the processor 120 may continuously limit the current flowing into the first battery 321, because when the charging of the first battery 321 with a high voltage is blocked, the total charging of the first battery 321 and the second battery 322 may be slower. The processor 120 may be set to limit the intensity of the charging current of the first battery 321 within a specified time.

[0100] In an embodiment, the processor 120 may set a maximum charging current, which is the maximum current at which the first battery 321 and the second battery 322 can be charged without being damaged. The processor 120 may block the charging current to the first battery 321 having a high voltage in the first mode, or limit the intensity of the charging current to the first battery 321 having a high voltage in the second mode, thereby preventing the charging current of the second battery 322 from exceeding the maximum charging current to prevent the second battery 322 from being damaged. The second battery 322 may maintain the maximum charging current to catch up with the voltage of the first battery 321.

[0101] In operation 745, the electronic device 101 according to the embodiment may determine whether the difference between the voltages of the first battery 321 and the second battery 322 is less than the second threshold voltage. The processor 120 may determine whether the voltage difference between the first battery 321 and the second battery 322 has decreased after a specified time has passed since the charging current of the first battery 321 having a high voltage is limited. When the voltage difference between the first battery 321 and the second battery 322 is less than the second threshold voltage (operation 745-yes), the processor 120 may define it as a battery balance state. When the voltage difference between the first battery 321 and the second battery 322 is less than the second threshold voltage (operation 745-yes), the processor 120 may proceed to operation 750. When the voltage difference between the first battery 321 and the second battery 322 is greater than the second threshold voltage (no) in operation 745, the processor 120 may define it as a battery unbalanced state. When the voltage difference between the first battery 321 and the second battery 322 is greater than the second threshold voltage (operation 745-no), the processor 120 may proceed to operation 755.

[0102] In operation 750, the electronic device 101 according to the embodiment may cancel the blocking of the charging and discharging current of the first battery 321 having a high voltage. Due to the return to the battery balance state, the processor 120 may perform charging in a general manner. After performing operation 750, the processor 120 may be configured to perform operation 710 every specified time period.

[0103] In operation 755, the electronic device 101 according to the embodiment may maintain blocking of the charging and discharging current of the first battery 321 having a high voltage. The processor 120 may determine that the first battery 321 and the second battery 322 are in an unbalanced state, and perform charging when the voltages of the first battery 321 and the second battery 322 are similarly matched to each other. After performing operation 755, the processor 120 may be configured to perform operation 710 every specified time period.

[0104] In an embodiment, the processor 120 may select a charging control method according to whether the balanced charging in the first mode and the second mode minimizes the battery cell balance or minimizes the charging time. Both charging control methods may continue until the voltage levels of the first battery 321 and the second battery 322 are similar to each other. The processor 120 may adjust the voltages of the first battery 321 and the second battery 322 to be similar to each other by allowing the first battery 321 and the second battery 322 to perform balanced charging.

[0105] Figure 8 is a view illustrating a method of charging a plurality of batteries in a first mode according to an embodiment of the present disclosure.

[0106] Reference Figure 8 , block diagram 800 shows that the first battery 321 can have a higher voltage than the second battery 322. The initial voltage of the first battery 321 can be a first voltage V1, which is a fully charged voltage or a target voltage. The initial voltage of the second battery 322 can be a fourth voltage V4. For example, the first voltage V1 can be about 100%, and the fourth voltage V4 can be about 25%. In this case, the power management module (e.g. Figure 3 The charging circuit (e.g., power management module 188) of Figure 3 The voltage of the charging circuit 210 of the power management module 188 may be in the range of about 80% to about 90%. The processor 120 may perform charging in the first mode based on the fact that the voltage of the power management module 188 is close to the full charge voltage or the target voltage.

[0107] In an embodiment, the processor 120 may block the charging current flowing into the first battery 321 and the discharging current flowing from the first battery 321 to the second battery 322. The processor 120 may control the power management module 188 so that the power management module 188 only charges the second battery 322. The power management module 188 may charge the second battery 322 to increase the voltage of the second battery 322 to reach the first voltage V1 through the second voltage V2 and the third voltage V3. Therefore, the voltage difference between the first battery 321 and the second battery 322 may be reduced or eliminated.

[0108] Fig. 9 is a view illustrating a method of charging a plurality of batteries in a second mode according to an embodiment of the present disclosure.

[0109] Reference Fig. 9 , block diagram 900 shows that the first battery 321 may have a higher voltage than the second battery 322. The initial voltage of the first battery 321 may be a third voltage V3, which is a voltage lower than the full charge voltage or the target voltage. The initial voltage of the second battery 322 may be a fourth voltage V4. For example, the third voltage V3 may be about 50%, and the fourth voltage V4 may be about 25%. In this case, the power management module (e.g. Figure 3 The charging circuit (e.g., power management module 188) of Figure 3 The voltage of the charging circuit 210 of the power management module 188 may be in the range of about 30% to about 40%. The processor 120 may perform charging in the second mode based on the fact that the voltage of the power management module 188 is lower than the full charge voltage or the target voltage.

[0110] In an embodiment, the processor 120 may limit the intensity of the charging current flowing into the first battery 321. For example, the processor 120 may limit the first charging current flowing into the first battery 321 to be less than the second charging current flowing into the second battery 322. In this case, when charging is performed in the power management module 188, when the voltage of the second battery 322 rises from the fourth voltage V4 to the third voltage V3, the voltage of the first battery 321 may not rise from the third voltage V3 to the second voltage V2, but may rise to the first intermediate voltage A1 between the second voltage V2 and the third voltage V3. Thereafter, the power management module 188 may charge the first battery 321 and the second battery 322 so that at the time point when the voltage of the second battery 322 rises to the second voltage V2, the voltage of the first battery 321 also rises to the second voltage V2. Therefore, the voltage difference between the first battery 321 and the second battery 322 may be reduced or eliminated.

[0111] The electronic device according to various embodiments may be one of various types of electronic devices. The electronic device may include, for example, a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a household appliance. According to an embodiment of the present disclosure, the electronic device is not limited to those electronic devices described above.

[0112] It should be understood that the various embodiments of the present disclosure and the terms used therein are not intended to limit the technical features set forth herein to specific embodiments, but include various changes, equivalents or alternative forms for the corresponding embodiments. For the description of the accompanying drawings, similar reference numerals may be used to refer to similar or related elements. As used herein, each phrase in the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C" and "at least one of A, B or C" may include any one or all possible combinations of the items listed together with the corresponding one of the multiple phrases. As used herein, terms such as "1st" and "2nd" or "first" and "second" may be used to simply distinguish the corresponding component from another component, and do not limit the component in other aspects (e.g., importance or order). It will be understood that if an element (e.g., a first element) is referred to as being “combined with another element (e.g., the second element)”, “combined to another element (e.g., the second element)”, “connected with another element (e.g., the second element)”, or “connected to another element (e.g., the second element)” when the terms “operably” or “communicatively” are used or when the terms “operably” or “communicatively” are not used, it means that the element may be directly (e.g., wired) connected to the other element, wirelessly connected to the other element, or connected to the other element via a third element.

[0113] As used herein, the term "module" may include units implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "portion," or "circuit"). A module may be a single integrated component adapted to perform one or more functions or a minimum unit or portion of the single integrated component. For example, according to an embodiment, a module may be implemented in the form of an application specific integrated circuit (ASIC).

[0114] The various embodiments described herein may be implemented as software (e.g., program 140) including one or more instructions stored in a storage medium (e.g., internal memory 136 or external memory 138) that can be read by a machine (e.g., electronic device 101). For example, under the control of a processor, a processor (e.g., processor 120) of the machine (e.g., electronic device 801) may call at least one of the one or more instructions stored in the storage medium and execute the at least one instruction with or without the use of one or more other components. This enables the machine to operate to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be run by an interpreter. A machine-readable storage medium may be provided in the form of a non-transitory storage medium. Among them, the term "non-transitory" only means that the storage medium is a tangible device and does not include signals (e.g., electromagnetic waves), but the term does not distinguish between data being semi-permanently stored in the storage medium and data being temporarily stored in the storage medium.

[0115] According to an embodiment, the method according to various embodiments of the present disclosure may be included and provided 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 released in the form of a machine-readable storage medium (e.g., a compact disk read-only memory (CD-ROM)), or may be downloaded via an application store (e.g., Play Store TM ) The computer program product may be published (e.g., downloaded or uploaded) online, or the computer program product may be distributed (e.g., downloaded or uploaded) directly between two user devices (e.g., smart phones). If published online, at least part of the computer program product may be temporarily generated, or at least part of the computer program product may be at least temporarily stored in a machine-readable storage medium (such as a memory of a manufacturer's server, an application store's server, or a forwarding server).

[0116] According to various embodiments, each component (e.g., module or program) in the above-mentioned components may include a single entity or multiple entities. According to various embodiments, one or more components in the above-mentioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform the one or more functions of each component in the multiple components in the same or similar manner as a corresponding component in the multiple components before integration. According to various embodiments, the operations performed by a module, program or another component may be performed sequentially, in parallel, repeatedly or in a heuristic manner, or one or more operations in the operations may be run or omitted in different orders, or one or more other operations may be added.

Claims

1. An electronic device, comprising: case; a plurality of batteries arranged in the housing; a power management module configured to control the plurality of batteries; a plurality of current limiting integrated circuits configured to limit a maximum intensity of current flowing into each of the plurality of batteries; as well as at least one processor operably connected to the plurality of batteries, the power management module, and the plurality of current limiting integrated circuits, Wherein, the at least one processor is configured to: Setting the total charging current output from the power management module, setting the respective charging currents flowing into each of the plurality of batteries to be proportional to the total capacity of each of the plurality of batteries without considering the current remaining capacity of the plurality of batteries, During charging of each of the plurality of batteries, each time the total charging current changes, the individual charging currents are recalculated in real time.

2. The electronic device according to claim 1, wherein: The at least one processor is further configured to: A maximum current to be introduced into each of the plurality of batteries is set in proportion to a total capacity of each of the plurality of batteries and a total maximum current set in the power management module.

3. The electronic device according to claim 1, wherein: The at least one processor is further configured to: A current greater than a maximum current that can be accommodated by a total capacity of each battery is prevented from being introduced into each of the plurality of batteries.

4. The electronic device as claimed in claim 1, further comprising: a first sensor configured to sense a sum of currents flowing into the plurality of batteries and / or a voltage of the power management module; as well as a second sensor and a third sensor configured to sense a current and / or a voltage of each of the plurality of batteries, Wherein, the at least one processor is further configured to: setting the total charging current by using the first sensor, and The respective charging currents are set by using the second sensor and the third sensor.

5. The electronic device as claimed in claim 4, in, The first sensor is included in the power management module, The second sensor is included in a first current limiting integrated circuit among the plurality of current limiting integrated circuits, and The third sensor is included in a second current limiting integrated circuit among the plurality of current limiting integrated circuits.

6. The electronic device as claimed in claim 1, wherein: The at least one processor is further configured to: distributing the total charging current to the plurality of batteries by capacity, and When the total charging current is maintained, the intensities of the individual charging currents are maintained.

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