KR101788647B1 - Mobile terminal and method for controlling the same - Google Patents

Abstract

The present invention relates to a method of controlling a mobile terminal having a main battery and a backup battery, the method comprising: applying power of the main battery to a terminal system; Changing the power supply path of the switching unit so that power of the backup battery is applied to the terminal system when the main battery is detached; Measuring an open circuit voltage (OCV) of the installed main battery while maintaining the modified power path when the main battery is installed; And restoring the power supply path of the switching unit to the original state so that power of the main battery is applied to the terminal system.

Description

[0001] MOBILE TERMINAL AND METHOD FOR CONTROLLING THE SAME [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mobile terminal and a control method thereof, and more particularly, to a mobile terminal and a control method thereof for applying power of a backup battery to a terminal system when a main battery is replaced.

A terminal can be divided into a mobile / portable terminal and a stationary terminal depending on whether the terminal is movable or not. The mobile terminal can be divided into a handheld terminal and a vehicle mounted terminal according to whether the user can directly carry the mobile terminal.

The functions of mobile terminals are diversified. For example, there are data and voice communication, photographing and video shooting through a camera, voice recording, music file playback through a speaker system, and outputting an image or video on a display unit. Some terminals are equipped with an electronic game play function or a multimedia player function. In particular, modern mobile terminals can receive multicast signals that provide visual content such as broadcast and video or television programs.

Such a terminal has various functions, for example, a multimedia player having a complex function such as photographing or moving picture shooting, reproduction of music or video file, reception of game or broadcasting, . In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal.

Meanwhile, as the use of the mobile terminal increases, the use time of the battery is recognized as an important factor in addition to the performance of the terminal. Therefore, much research has been conducted in terms of hardware and software in order to extend the battery usage time.

However, as the performance of the CPU of the mobile terminal is improved, power consumption is increased and the thickness of the phone is decreased, so that the capacity of the battery is limited. Therefore, the usable time of the battery is inevitably limited. Accordingly, the user of the mobile terminal needs to frequently charge the battery when the remaining battery power is low, or to replace the battery frequently by preparing an extra battery.

However, since the system power is turned off each time the battery is replaced, the terminal user has to complete all currently running applications, boot the terminal system after replacing the battery, and then run the applications again. Therefore, when replacing the battery, it is required to keep the operation of the terminal system using the backup battery.

The present invention is directed to solving the above-mentioned problems and other problems. Another object of the present invention is to provide a mobile terminal and a control method thereof, which can maintain the operation of a corresponding system by applying power of a backup battery to a terminal system when the main battery is detached.

Another object of the present invention is to provide a mobile terminal and a control method thereof that can accurately calculate an initial capacity (SOC) of a battery by measuring an open circuit voltage (OCV) of the main battery when the main battery is mounted.

According to an aspect of the present invention, there is provided a method of operating a main battery, Changing the power supply path of the switching unit so that power of the backup battery is applied to the terminal system when the main battery is detached; Measuring an open circuit voltage (OCV) of the installed main battery while maintaining the modified power path when the main battery is installed; And restoring the power supply path of the switching unit to the original state so that power of the main battery is applied to the terminal system.

Effects of the mobile terminal and the control method according to the present invention will be described as follows.

According to at least one embodiment of the present invention, when the main battery is replaced, power of the backup battery is applied to the terminal system so that the operation of the corresponding system can be maintained, and the open circuit voltage (OCV) And the initial capacity (SOC) of the battery can be accurately calculated.

Meanwhile, various other effects will be directly or implicitly disclosed in the detailed description according to the embodiment of the present invention to be described later.

FIG. 1A is a block diagram illustrating a mobile terminal according to the present invention; FIG.
FIG. 1B and FIG. 1C are conceptual diagrams illustrating an example of a mobile terminal according to the present invention in different directions; FIG.
2 is a block diagram illustrating a power supply unit of a mobile terminal according to the present invention;
FIG. 3 is a flowchart illustrating an operation of a mobile terminal according to an exemplary embodiment of the present invention; FIG.
4 is a diagram that is referenced to describe a battery power supply sequence in a normal state;
5 is a diagram referred to explain a battery power supply sequence at the time of main battery detachment;
6A and 6B are diagrams for explaining a battery power supply sequence when the main battery is mounted;
FIG. 7 is a diagram for describing an operation of a mobile terminal providing a user interface for entering a battery exchange mode; FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

The mobile terminal described in this specification includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, a slate PC A tablet PC, an ultrabook, a wearable device such as a smartwatch, a smart glass, and a head mounted display (HMD). have.

However, it will be appreciated by those skilled in the art that the configuration according to the embodiments described herein may be applied to fixed terminals such as a digital TV, a desktop computer, a digital signage, and the like, will be.

1A to 1C are block diagrams for explaining a mobile terminal according to the present invention, and FIGS. 1B and 1C are conceptual diagrams showing an example of a mobile terminal according to the present invention in different directions.

The mobile terminal 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, ), And the like. The components shown in FIG. 1A are not essential for implementing a mobile terminal, so that the mobile terminal described herein may have more or fewer components than the components listed above.

The wireless communication unit 110 may be connected between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and another mobile terminal 100 or between the mobile terminal 100 and the external server 100. [ Lt; RTI ID = 0.0 > wireless < / RTI > In addition, the wireless communication unit 110 may include one or more modules for connecting the mobile terminal 100 to one or more networks.

The wireless communication unit 110 may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114, and a location information module 115 .

The input unit 120 includes a camera 121 or an image input unit for inputting a video signal, a microphone 122 for inputting an audio signal, an audio input unit, a user input unit 123 for receiving information from a user A touch key, a mechanical key, and the like). The voice data or image data collected by the input unit 120 may be analyzed and processed by a user's control command.

The sensing unit 140 may include at least one sensor for sensing at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information. For example, the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, A G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor, a finger scan sensor, an ultrasonic sensor, A microphone 226, a battery gauge, an environmental sensor (for example, a barometer, a hygrometer, a thermometer, a radiation detection sensor, A thermal sensor, a gas sensor, etc.), a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification can combine and utilize information sensed by at least two of the sensors.

The output unit 150 includes at least one of a display unit 151, an acoustic output unit 152, a haptic tip module 153, and a light output unit 154 to generate an output related to visual, auditory, can do. The display unit 151 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. The touch screen may function as a user input unit 123 that provides an input interface between the mobile terminal 100 and a user and may provide an output interface between the mobile terminal 100 and a user.

The interface unit 160 serves as a path to various types of external devices connected to the mobile terminal 100. The interface unit 160 is connected to a device having a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, And may include at least one of a port, an audio I / O port, a video I / O port, and an earphone port. In the mobile terminal 100, corresponding to the connection of the external device to the interface unit 160, it is possible to perform appropriate control related to the connected external device.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a plurality of application programs or applications running on the mobile terminal 100, data for operation of the mobile terminal 100, and commands. At least some of these applications may be downloaded from an external server via wireless communication. Also, at least a part of these application programs may exist on the mobile terminal 100 from the time of shipment for the basic functions (e.g., telephone call receiving function, message receiving function, and calling function) of the mobile terminal 100. Meanwhile, the application program may be stored in the memory 170, installed on the mobile terminal 100, and may be operated by the control unit 180 to perform the operation (or function) of the mobile terminal.

In addition to the operations related to the application program, the control unit 180 typically controls the overall operation of the mobile terminal 100. The control unit 180 may process or process signals, data, information, and the like input or output through the above-mentioned components, or may drive an application program stored in the memory 170 to provide or process appropriate information or functions to the user.

In addition, the controller 180 may control at least some of the components illustrated in FIG. 1A in order to drive an application program stored in the memory 170. FIG. In addition, the controller 180 may operate at least two of the components included in the mobile terminal 100 in combination with each other for driving the application program.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power to the components included in the mobile terminal 100. The power supply unit 190 includes a battery, which may be an internal battery or a replaceable battery.

At least some of the components may operate in cooperation with one another to implement a method of operation, control, or control of a mobile terminal according to various embodiments described below. In addition, the operation, control, or control method of the mobile terminal may be implemented on the mobile terminal by driving at least one application program stored in the memory 170. [

Hereinafter, the various components of the mobile terminal 100 will be described in detail with reference to FIG. 1A.

First, referring to the wireless communication unit 110, the broadcast receiving module 111 of the wireless communication unit 110 receives broadcast signals and / or broadcast-related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. Two or more broadcast receiving modules may be provided to the mobile terminal 100 for simultaneous broadcast reception or broadcast channel switching for at least two broadcast channels.

The mobile communication module 112 may be a mobile communication module or a mobile communication module such as a mobile communication module or a mobile communication module that uses technology standards or a communication method (e.g., Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution And an external terminal, or a server on a mobile communication network established according to a long term evolution (AR), a long term evolution (AR), or the like.

The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. The wireless Internet module 113 is configured to transmit and receive a wireless signal in a communication network according to wireless Internet technologies.

Wireless Internet technologies include, for example, wireless LAN (WLAN), wireless fidelity (Wi-Fi), wireless fidelity (Wi-Fi) Direct, DLNA (Digital Living Network Alliance), WiBro Interoperability for Microwave Access, High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE) and Long Term Evolution-Advanced (LTE-A) 113 transmit and receive data according to at least one wireless Internet technology, including Internet technologies not listed above.

The wireless Internet module 113 for performing a wireless Internet connection through the mobile communication network can be used for wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE or LTE- May be understood as a kind of the mobile communication module 112.

The short-range communication module 114 is for short-range communication, and includes Bluetooth ™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB) (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technology. The short-range communication module 114 is connected to the mobile terminal 100 and the wireless communication system through the wireless area networks, between the mobile terminal 100 and another mobile terminal 100, or between the mobile terminal 100 ) And the other mobile terminal 100 (or the external server). The short-range wireless communication network may be a short-range wireless personal area network.

Here, the other mobile terminal 100 may be a wearable device (e.g., a smartwatch, a smart glass, etc.) capable of interchanging data with the mobile terminal 100 according to the present invention (smart glass), HMD (head mounted display)). The short range communication module 114 may detect (or recognize) a wearable device capable of communicating with the mobile terminal 100 around the mobile terminal 100. [ If the detected wearable device is a device authenticated to communicate with the mobile terminal 100 according to the present invention, the control unit 180 may transmit at least a part of the data processed by the mobile terminal 100 to the short- 114 to the wearable device. Therefore, the user of the wearable device can use the data processed by the mobile terminal 100 through the wearable device. For example, according to this, when a telephone is received in the mobile terminal 100, the user performs a telephone conversation via the wearable device, or when a message is received in the mobile terminal 100, It is possible to check the message.

The position information module 115 is a module for obtaining the position (or current position) of the mobile terminal, and a representative example thereof is a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, when the mobile terminal utilizes the GPS module, it can acquire the position of the mobile terminal by using a signal transmitted from the GPS satellite. As another example, when the mobile terminal utilizes the Wi-Fi module, it can acquire the position of the mobile terminal based on information of a wireless access point (AP) that transmits or receives the wireless signal with the Wi-Fi module. Optionally, the location information module 115 may perform any of the other functions of the wireless communication unit 110 to obtain data relating to the location of the mobile terminal, in addition or alternatively. The location information module 115 is a module used to obtain the location (or current location) of the mobile terminal, and is not limited to a module that directly calculates or obtains the location of the mobile terminal.

Next, the input unit 120 is for inputting image information (or signal), audio information (or signal), data, or information input from a user. For inputting image information, Or a plurality of cameras 121 may be provided. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170. [ A plurality of cameras 121 provided in the mobile terminal 100 may be arranged to have a matrix structure and various angles or foci may be provided to the mobile terminal 100 through the camera 121 having the matrix structure A plurality of pieces of image information can be input. In addition, the plurality of cameras 121 may be arranged in a stereo structure to acquire a left image and a right image for realizing a stereoscopic image.

The microphone 122 processes the external acoustic signal into electrical voice data. The processed voice data can be utilized variously according to a function (or a running application program) being executed in the mobile terminal 100. Meanwhile, the microphone 122 may be implemented with various noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The user input unit 123 is for receiving information from a user and when the information is inputted through the user input unit 123, the control unit 180 can control the operation of the mobile terminal 100 to correspond to the input information . The user input unit 123 may include a mechanical input means (or a mechanical key such as a button located on the front, rear or side of the mobile terminal 100, a dome switch, a jog wheel, Jog switches, etc.) and touch-type input means. For example, the touch-type input means may comprise a virtual key, a soft key or a visual key displayed on the touch screen through software processing, The virtual key or the visual key can be displayed on the touch screen with various forms. For example, the virtual key or the visual key can be displayed on the touch screen, ), An icon, a video, or a combination thereof.

Meanwhile, the sensing unit 140 senses at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information, and generates a corresponding sensing signal. The control unit 180 may control the driving or operation of the mobile terminal 100 or may perform data processing, function or operation related to the application program installed in the mobile terminal 100 based on the sensing signal. Representative sensors among various sensors that may be included in the sensing unit 140 will be described in more detail.

First, the proximity sensor 141 refers to a sensor that detects the presence of an object approaching a predetermined detection surface, or the presence of an object in the vicinity of the detection surface, without mechanical contact by using electromagnetic force or infrared rays. The proximity sensor 141 may be disposed in the inner area of the mobile terminal or in proximity to the touch screen, which is covered by the touch screen.

Examples of the proximity sensor 141 include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. In the case where the touch screen is electrostatic, the proximity sensor 141 can be configured to detect the proximity of the object with a change of the electric field along the proximity of the object having conductivity. In this case, the touch screen (or touch sensor) itself may be classified as a proximity sensor.

On the other hand, for convenience of explanation, the act of recognizing that the object is located on the touch screen in proximity with no object touching the touch screen is referred to as "proximity touch & The act of actually touching an object on the screen is called a "contact touch. &Quot; The position at which the object is closely touched on the touch screen means a position where the object corresponds to the touch screen vertically when the object is touched. The proximity sensor 141 can detect a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, have. Meanwhile, the control unit 180 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern sensed through the proximity sensor 141 as described above, and further provides visual information corresponding to the processed data It can be output on the touch screen. Furthermore, the control unit 180 can control the mobile terminal 100 such that different operations or data (or information) are processed according to whether the touch to the same point on the touch screen is a proximity touch or a touch touch .

The touch sensor uses a touch (or touch input) applied to the touch screen (or the display unit 151) by using at least one of various touch methods such as a resistance film type, a capacitive type, an infrared type, an ultrasonic type, Detection.

For example, the touch sensor may be configured to convert a change in a pressure applied to a specific portion of the touch screen or a capacitance generated in a specific portion to an electrical input signal. The touch sensor may be configured to detect a position, an area, a pressure at the time of touch, a capacitance at the time of touch, and the like where a touch object touching the touch screen is touched on the touch sensor. Here, the touch object may be a finger, a touch pen, a stylus pen, a pointer, or the like as an object to which a touch is applied to the touch sensor.

Thus, when there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like. Here, the touch controller may be a separate component from the control unit 180, and may be the control unit 180 itself.

On the other hand, the control unit 180 may perform different controls or perform the same control according to the type of the touch object touching the touch screen (or a touch key provided on the touch screen). Whether to perform different controls or to perform the same control according to the type of the touch object may be determined according to the current state of the mobile terminal 100 or an application program being executed.

On the other hand, the touch sensors and the proximity sensors discussed above can be used independently or in combination to provide a short touch (touch), a long touch, a multi touch, a drag touch ), Flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, and the like. Touch can be sensed.

The ultrasonic sensor can recognize the position information of the object to be sensed by using ultrasonic waves. Meanwhile, the controller 180 can calculate the position of the wave generating source through the information sensed by the optical sensor and the plurality of ultrasonic sensors. The position of the wave source can be calculated using the fact that the light is much faster than the ultrasonic wave, that is, the time when the light reaches the optical sensor is much faster than the time the ultrasonic wave reaches the ultrasonic sensor. More specifically, the position of the wave generating source can be calculated using the time difference with the time when the ultrasonic wave reaches the reference signal.

The camera 121 includes at least one of a camera sensor (for example, a CCD, a CMOS, etc.), a photo sensor (or an image sensor), and a laser sensor.

The camera 121 and the laser sensor may be combined with each other to sense a touch of the sensing object with respect to the three-dimensional stereoscopic image. The photosensor can be laminated to the display element, which is adapted to scan the movement of the object to be detected proximate to the touch screen. More specifically, the photosensor mounts photo diodes and TRs (Transistors) in a row / column and scans the contents loaded on the photosensor using an electrical signal that varies according to the amount of light applied to the photo diode. That is, the photo sensor performs coordinate calculation of the object to be sensed according to the amount of change of light, and position information of the object to be sensed can be obtained through the calculation.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the mobile terminal 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information .

Also, the display unit 151 may be configured as a stereoscopic display unit for displaying a stereoscopic image.

In the stereoscopic display unit, a three-dimensional display system such as a stereoscopic system (glasses system), an autostereoscopic system (no-glasses system), and a projection system (holographic system) can be applied.

The sound output unit 152 may output audio data received from the wireless communication unit 110 or stored in the memory 170 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output unit 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output unit 152 may include a receiver, a speaker, a buzzer, and the like.

The haptic module 153 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 153 may be vibration. The intensity and pattern of the vibration generated in the haptic module 153 can be controlled by the user's selection or the setting of the control unit. For example, the haptic module 153 may synthesize and output different vibrations or sequentially output the vibrations.

In addition to vibration, the haptic module 153 may be configured to perform various functions such as a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or suction force of the air through the injection port or the suction port, a touch on the skin surface, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

The haptic module 153 can transmit the tactile effect through the direct contact, and the tactile effect can be felt by the user through the muscles of the finger or arm. The haptic module 153 may include two or more haptic modules 153 according to the configuration of the mobile terminal 100.

The light output unit 154 outputs a signal for notifying the occurrence of an event using the light of the light source of the mobile terminal 100. Examples of events that occur in the mobile terminal 100 may include message reception, call signal reception, missed call, alarm, schedule notification, email reception, information reception through an application, and the like.

The signal output from the light output unit 154 is implemented as the mobile terminal emits light of a single color or a plurality of colors to the front or rear surface. The signal output may be terminated by the mobile terminal detecting the event confirmation of the user.

The interface unit 160 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 160 receives data from an external device or supplies power to each component in the mobile terminal 100 or transmits data in the mobile terminal 100 to an external device. For example, a port for connecting a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, an audio I / O port, a video I / O port, an earphone port, and the like may be included in the interface unit 160.

The identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM) A universal subscriber identity module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the interface unit 160. [

The interface unit 160 may be a path through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, And various command signals may be transmitted to the mobile terminal 100. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal 100 is correctly mounted on the cradle.

The memory 170 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., phone book, message, still image, moving picture, etc.). The memory 170 may store data related to vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory 170 may be a flash memory type, a hard disk type, a solid state disk type, an SDD type (Silicon Disk Drive type), a multimedia card micro type ), Card type memory (e.g., SD or XD memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read memory, a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and / or an optical disk. The mobile terminal 100 may operate in association with a web storage that performs the storage function of the memory 170 on the Internet.

Meanwhile, as described above, the control unit 180 controls the operations related to the application program and the general operation of the mobile terminal 100. [ For example, when the state of the mobile terminal meets a set condition, the control unit 180 can execute or release a lock state for restricting input of a user's control command to applications.

In addition, the control unit 180 performs control and processing related to voice communication, data communication, video call, or the like, or performs pattern recognition processing to recognize handwriting input or drawing input performed on the touch screen as characters and images, respectively . Further, the controller 180 may control any one or a plurality of the above-described components in order to implement various embodiments described below on the mobile terminal 100 according to the present invention.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components. The power supply unit 190 includes a battery, the battery may be an internal battery configured to be chargeable, and may be detachably coupled to the terminal body for charging or the like.

In addition, the power supply unit 190 may include a connection port, and the connection port may be configured as an example of an interface 160 through which an external charger for supplying power for charging the battery is electrically connected.

As another example, the power supply unit 190 may be configured to charge the battery in a wireless manner without using the connection port. In this case, the power supply unit 190 may use at least one of an inductive coupling method based on a magnetic induction phenomenon from an external wireless power transmission apparatus and a magnetic resonance coupling method based on an electromagnetic resonance phenomenon Power can be delivered.

In the following, various embodiments may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

Referring to FIGS. 1B and 1C, the disclosed mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto and can be applied to various structures such as a folder type, a flip type, a slide type, a swing type, and a swivel type in which a watch type, a clip type, a glass type or two or more bodies are relatively movably coupled . A description of a particular type of mobile terminal, although relevant to a particular type of mobile terminal, is generally applicable to other types of mobile terminals.

Here, the terminal body can be understood as a concept of referring to the mobile terminal 100 as at least one aggregate.

The mobile terminal 100 includes a case (for example, a frame, a housing, a cover, and the like) that forms an appearance. As shown, the mobile terminal 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in the inner space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.

A display unit 151 is disposed on a front surface of the terminal body to output information. The window 151a of the display unit 151 may be mounted on the front case 101 to form a front surface of the terminal body together with the front case 101. [

In some cases, electronic components may also be mounted on the rear case 102. Electronic parts that can be mounted on the rear case 102 include detachable batteries, an identification module, a memory card, and the like. In this case, a rear cover 103 for covering the mounted electronic components can be detachably coupled to the rear case 102. Therefore, when the rear cover 103 is separated from the rear case 102, the electronic parts mounted on the rear case 102 are exposed to the outside.

As shown, when the rear cover 103 is coupled to the rear case 102, a side portion of the rear case 102 can be exposed. In some cases, the rear case 102 may be completely covered by the rear cover 103 during the engagement. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b and the sound output unit 152b to the outside.

These cases 101, 102, and 103 may be formed by injection molding of synthetic resin or may be formed of metal such as stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

The mobile terminal 100 may be configured such that one case provides the internal space, unlike the above example in which a plurality of cases provide an internal space for accommodating various electronic components. In this case, a universal mobile terminal 100 in which a synthetic resin or metal is connected from the side to the rear side can be realized.

Meanwhile, the mobile terminal 100 may include a waterproof unit (not shown) for preventing water from penetrating into the terminal body. For example, the waterproof portion is provided between the window 151a and the front case 101, between the front case 101 and the rear case 102, or between the rear case 102 and the rear cover 103, And a waterproof member for sealing the inside space of the oven.

The mobile terminal 100 is provided with a display unit 151, first and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, Cameras 121a and 121b, first and second operation units 123a and 123b, a microphone 122, an interface unit 160, and the like.

1B and 1C, a display unit 151, a first sound output unit 152a, a proximity sensor 141, an illuminance sensor 142, an optical output unit (not shown) A second operation unit 123b, a microphone 122 and an interface unit 160 are disposed on a side surface of the terminal body, And a mobile terminal 100 having a second sound output unit 152b and a second camera 121b disposed on a rear surface thereof.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as needed, or placed on different planes. For example, the first operation unit 123a may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the side surface of the terminal body rather than the rear surface of the terminal body.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the mobile terminal 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information .

The display unit 151 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display display, a 3D display, and an e-ink display.

In addition, the display unit 151 may exist in two or more depending on the embodiment of the mobile terminal 100. In this case, the mobile terminal 100 may be provided with a plurality of display portions spaced apart from each other or disposed integrally with one another, or may be disposed on different surfaces, respectively.

The display unit 151 may include a touch sensor that senses a touch with respect to the display unit 151 so that a control command can be received by a touch method. When a touch is made to the display unit 151, the touch sensor senses the touch, and the control unit 180 generates a control command corresponding to the touch based on the touch. The content input by the touch method may be a letter or a number, an instruction in various modes, a menu item which can be designated, and the like.

The touch sensor may be a film having a touch pattern and disposed between the window 151a and a display (not shown) on the rear surface of the window 151a, or may be a metal wire . Alternatively, the touch sensor may be formed integrally with the display. For example, the touch sensor may be disposed on a substrate of the display or inside the display.

In this way, the display unit 151 can form a touch screen together with the touch sensor. In this case, the touch screen can function as a user input unit 123 (see FIG. 1A). In some cases, the touch screen may replace at least some functions of the first operation unit 123a.

The first sound output unit 152a may be implemented as a receiver for transmitting a call sound to a user's ear and the second sound output unit 152b may be implemented as a loud speaker for outputting various alarm sounds or multimedia playback sounds. ). ≪ / RTI >

The window 151a of the display unit 151 may be provided with an acoustic hole for emitting the sound generated from the first acoustic output unit 152a. However, the present invention is not limited to this, and the sound may be configured to be emitted along an assembly gap (for example, a gap between the window 151a and the front case 101) between the structures. In this case, the appearance of the mobile terminal 100 can be simplified because the holes that are formed independently for the apparent acoustic output are hidden or hidden.

The optical output unit 154 is configured to output light for notifying the occurrence of an event. Examples of the event include a message reception, a call signal reception, a missed call, an alarm, a schedule notification, an email reception, and reception of information through an application. The control unit 180 may control the light output unit 154 to terminate the light output when the event confirmation of the user is detected.

The first camera 121a processes an image frame of a still image or a moving image obtained by the image sensor in the photographing mode or the video communication mode. The processed image frame can be displayed on the display unit 151 and can be stored in the memory 170. [

The first and second operation units 123a and 123b may be collectively referred to as a manipulating portion as an example of a user input unit 123 operated to receive a command for controlling the operation of the mobile terminal 100 have. The first and second operation units 123a and 123b can be employed in any manner as long as the user is in a tactile manner such as touch, push, scroll, or the like. In addition, the first and second operation units 123a and 123b may be employed in a manner that the user operates the apparatus without touching the user through a proximity touch, a hovering touch, or the like.

In this figure, the first operation unit 123a is a touch key, but the present invention is not limited thereto. For example, the first operation unit 123a may be a mechanical key, or a combination of a touch key and a touch key.

The contents input by the first and second operation units 123a and 123b can be variously set. For example, the first operation unit 123a receives a command such as a menu, a home key, a cancellation, a search, and the like, and the second operation unit 123b receives a command from the first or second sound output unit 152a or 152b The size of the sound, and the change of the display unit 151 to the touch recognition mode.

On the other hand, a rear input unit (not shown) may be provided on the rear surface of the terminal body as another example of the user input unit 123. The rear input unit is operated to receive a command for controlling the operation of the mobile terminal 100, and input contents may be variously set. For example, commands such as power on / off, start, end, scrolling, and the like, the size adjustment of the sound output from the first and second sound output units 152a and 152b, And the like can be inputted. The rear input unit may be implemented as a touch input, a push input, or a combination thereof.

The rear input unit may be disposed so as to overlap with the front display unit 151 in the thickness direction of the terminal body. For example, the rear input unit may be disposed at the rear upper end of the terminal body such that when the user holds the terminal body with one hand, the rear input unit can be easily manipulated using the index finger. However, the present invention is not limited thereto, and the position of the rear input unit may be changed.

When a rear input unit is provided on the rear surface of the terminal body, a new type of user interface using the rear input unit can be realized. When the first operation unit 123a is not disposed on the front surface of the terminal body in place of at least a part of the functions of the first operation unit 123a provided on the front surface of the terminal body, The display unit 151 may be configured as a larger screen.

Meanwhile, the mobile terminal 100 may be provided with a fingerprint recognition sensor for recognizing the fingerprint of the user, and the controller 180 may use the fingerprint information sensed through the fingerprint recognition sensor as authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive the user's voice, other sounds, and the like. The microphone 122 may be provided at a plurality of locations to receive stereophonic sound.

The interface unit 160 is a path through which the mobile terminal 100 can be connected to an external device. For example, the interface unit 160 may include a connection terminal for connection with another device (for example, an earphone or an external speaker), a port for short-range communication (for example, an infrared port (IrDA Port), a Bluetooth port A wireless LAN port, or the like), or a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 may be implemented as a socket for receiving an external card such as a SIM (Subscriber Identification Module) or a UIM (User Identity Module) or a memory card for storing information.

And a second camera 121b may be disposed on a rear surface of the terminal body. In this case, the second camera 121b has a photographing direction which is substantially opposite to that of the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix form. Such a camera can be named an 'array camera'. When the second camera 121b is configured as an array camera, images can be taken in various ways using a plurality of lenses, and a better quality image can be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 shines light toward the subject when the subject is photographed by the second camera 121b.

And a second sound output unit 152b may be additionally disposed in the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a and may be used for implementing a speakerphone mode in a call.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be embedded in the terminal body or formed in the case. For example, an antenna constituting a part of the broadcast receiving module 111 (see FIG. 1A) may be configured to be able to be drawn out from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

The terminal body is provided with a power supply unit 190 (see FIG. 1A) for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 built in the terminal body or detachable from the outside of the terminal body.

The battery 191 may be configured to receive power through a power cable connected to the interface unit 160. In addition, the battery 191 may be configured to be wirelessly chargeable through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

The rear cover 103 is configured to be coupled to the rear case 102 so as to cover the battery 191 to restrict the release of the battery 191 and to protect the battery 191 from external impact and foreign matter . When the battery 191 is detachably attached to the terminal body, the rear cover 103 may be detachably coupled to the rear case 102.

The mobile terminal 100 may be provided with an accessory that protects the appearance or supports or expands the function of the mobile terminal 100. [ One example of such an accessory is a cover or pouch that covers or accommodates at least one side of the mobile terminal 100. [ The cover or pouch may be configured to interlock with the display unit 151 to expand the function of the mobile terminal 100. Another example of an accessory is a touch pen for supplementing or extending a touch input to the touch screen.

In the foregoing, the configuration of the mobile terminal 100 according to the present invention has been described with reference to FIGS. 1A to 1C. Hereinafter, according to an embodiment of the present invention, when the main battery is detached, power of the backup battery may be applied to the terminal system to continuously maintain the operation of the corresponding system, and when the main battery is installed, (SOC) of the battery, and a control method thereof will be described in detail.

2 is a block diagram illustrating a power supply unit of a mobile terminal according to the present invention.

2, the power supply unit 190 includes a main battery unit 210, a backup battery unit 220, a first charging unit 230, a second charging unit 240, a switching unit 250, a power management unit 260 And a battery remaining amount measuring unit 270.

The main battery unit 210 is configured such that a rechargeable battery is detachably mountable to the rear case 102. The main battery unit 210 includes a battery cell 211, a protection circuit 212, and a terminal unit 213.

The battery cell 211 may supply power to the main body of the mobile terminal 100 or may store power supplied through the external charger 50 or the like. At this time, the battery cell 211 outputs a voltage in the range of about 3.4V to 4.4V. For example, when fully charged, the battery cell 211 outputs a voltage of about 4.4 V, and when the battery cell 120 is fully discharged, the battery cell 120 outputs a voltage of about 3.4 V.

The protection circuit 212 is disposed between the battery cell 211 and the terminal portion 213 and can perform an overcharge protection function and an over discharge protection function and an overcurrent protection function and a short protection function. The protection circuit 213 includes an electronic circuit (not shown) designed to perform the above-described protection functions. A known technique can be used as an electronic circuit for carrying out these protection functions and is not directly related to the contents of the present invention, so a detailed description thereof will be omitted.

The terminal unit 213 may provide an interface between the battery cell 211 and the mobile terminal 100. The terminal unit 213 includes a positive terminal for supplying power between the battery cell 211 and the mobile terminal 100, an ID terminal for confirming whether the battery cell 211 is genuine or not, And a TH terminal for confirming an internal temperature of the battery 211.

In addition, the ID terminal and the TH terminal may provide a function for detecting presence or absence of connection between the battery cell 211 and the mobile terminal 100. In addition, the terminal unit 213 may further include one or more terminals for performing a specific function, but the present invention is not limited thereto.

The digital signal output from the ID terminal may be provided to the switching unit 250 and the control unit 180. The analog signal output from the TH terminal may be provided to the switching unit 250 and the power management unit 260. The power management unit 260 may convert an analog signal output from the TH terminal to a digital signal using an ADC (Analog to Digital Converter) element 260, and then transmit the digital signal to the controller 180.

The backup battery unit 220 is configured to be mounted inside the terminal body so that the rechargeable battery can not be replaced or a rechargeable battery to be detachably attached to the rear case 102. The backup battery unit 210 may also include a battery cell (not shown), a protection circuit (not shown), and a terminal unit (not shown).

The backup battery unit 220 can supply power to the main body of the mobile terminal 100 to maintain the operation of the terminal system when the main battery is detached. Due to the characteristics of such a backup battery, it is preferable to use a battery having a capacity smaller than the capacity of the main battery.

In addition, the backup battery unit 220 may store power supplied through the external charger 50 or may store power supplied through the main battery unit 210.

The first charging unit 230 may charge the main battery when charging power is supplied from the external charger 50. [ At this time, the first charging unit 230 may control the charging current applied to the main battery according to the control command of the controller 180. [

The second charging unit 240 may charge the backup battery when the charging power source is supplied from the external charger 50. The second charging unit 240 may charge the backup battery when the charging power is supplied from the main battery unit 210.

The switching unit 250 may switch the power path depending on whether the main battery is removed or mounted. That is, when the main battery is detached, the switching unit 250 switches the power supply path so that the power of the backup battery is applied to the terminal system. Meanwhile, when the main battery is mounted, the switching unit 250 switches the power supply path so that the power of the main battery is applied to the terminal system.

In addition, the switching unit 250 may include a switching device 251, an HW IC 252, an SW IC 253, and the like. The HW IC 252 can control the switching device 251 based on a hardware signal received from the ID terminal or the TH terminal of the main battery unit 210 when the main battery is detached. Meanwhile, the SW IC 253 can control the switching device 251 based on a software signal received from the control unit 180 when the main battery is mounted.

The power management unit 260 may distribute the power supplied from the main battery or the backup battery to each component of the terminal system. At this time, the power management unit 240 can efficiently manage the power consumption of the entire system through the smart power management technology.

The battery remaining amount measuring unit 270 may measure a voltage, an electric current, an open circuit voltage (OCV), a state of charge (SOC), and the like of the main battery. have.

Also, the battery remaining amount measuring unit 270 may measure a voltage, a current, a charge state (SOC), and the like of the backup battery. A fuel guage IC may be used as an example of the battery remaining amount measuring unit 270, but it is not limited thereto.

The battery remaining amount measuring unit 270 measures the open circuit voltage (OCV) of the main battery before the power supply path is switched through the switching unit 250 when the main battery is loaded, The accurate capacity (SOC) of the battery can be calculated.

Percent (%) is used as a unit for the state of charge (SOC) of the battery, and the amount is expressed as 0 to 100%. On the other hand, the state of charge of the battery may be expressed by the current capacity of the battery.

The SOC of a battery is usually calculated indirectly because it can not be directly measured. For example, the SOC can be calculated through at least one of a chemical method, a voltage measurement method, a current integration method, and a pressure measurement method. Here, the chemical method is a method of calculating the SOC by measuring the electrolyte specific gravity and pH of the battery. The voltage measuring method is a method of calculating the SOC by measuring the voltage of the battery. The current integration method measures the current of the battery, And the pressure measurement method is a method of calculating the SOC using the property that the internal pressure increases during charging.

In this embodiment, the battery remaining amount measuring unit 270 may calculate the SOC of the battery using at least one of the above-described calculation methods. However, it is preferable that the battery remaining amount measuring unit 270 uses a voltage tracking method among the above-described calculation methods for SOC calculation of the initial battery.

The memory 170 may store a plurality of application programs (application programs or applications) that are driven by the mobile terminal 100. In particular, in the present embodiment, the memory 170 can store an application 171 (hereinafter referred to as a " battery scheduling application " for convenience of description) capable of efficiently scheduling the switching operation of the switching unit 250 have. This battery scheduling application may be provided by default in the memory 170 during terminal manufacturing, or may be downloaded from an external device via wired / wireless communication.

The control unit 180 may perform a function of controlling an operation related to various application programs, in addition to the function of controlling the overall operation of the mobile terminal 100. [ In addition, the control unit 180 may further include an application processor 181 for controlling operations associated with various applications.

In particular, in the present embodiment, the application processor 181 may load an application program stored in the memory 170 and process a function corresponding to the application program. That is, when the battery is replaced, the application processor 181 drives the battery scheduling application so that the operation of the terminal system can be maintained through continuous power supply by the main battery and the backup battery.

3 is a flowchart illustrating an operation of a mobile terminal according to an exemplary embodiment of the present invention.

3, when the power is turned on, the controller 180 provides power to the main body of the mobile terminal 100 via the power management unit 260 to boot the terminal system (S305, S310).

The controller 180 controls the switching operation of the switching unit 250 so that the main battery and the power management unit 260 are connected to the power supply unit 260, the power path can be changed.

The control unit 180 can perform overall operation of the terminal system based on the power supplied from the main battery until the main battery is replaced after booting the terminal system.

The control unit 180 may determine whether the main battery and the mobile terminal 100 are connected to each other based on a signal provided from the ID terminal or the TH terminal of the main battery unit 210 at step S315.

If the main battery is detached from the rear case (S320), the control unit 180 does not output a software signal for controlling the switching operation of the switching unit 250. As a result, Instead, the switching unit 250 performs a switching operation based on the hardware signal provided from the ID terminal or the TH terminal to allow the backup battery and the power management unit 260 to be connected to each other (S325). This is to perform a faster switching operation by using a hardware signal instead of a software signal.

If the HW IC 252 is not present in the switching unit 250, the control unit 180 outputs a software signal for controlling the switching operation of the switching unit 250 so that the backup battery and the power management unit 260 May be connected to each other.

The control unit 180 may supply the power supplied from the backup battery to the main body of the mobile terminal 100 through the power management unit 260 to continue the operation of the terminal system at step S330.

The controller 180 can perform the overall operation of the terminal system based on the power supplied from the backup battery until the new battery is mounted on the rear case. At this time, the control unit 180 may terminate the execution of unnecessary programs or applications in order to minimize the consumption of the backup battery. Also, the control unit 180 may provide a separate menu for selecting or setting an execution ending object.

The control unit 180 may determine whether the main battery and the mobile terminal 100 are connected to each other based on a signal provided from the ID terminal or the TH terminal of the main battery unit 210 at step S335.

If it is determined that the main battery is mounted on the rear case (S340), the controller 180 may output a software signal for stopping the switching operation of the switching unit 250 for a predetermined period of time. This is to measure the open circuit voltage (OCV) of the newly replaced main battery.

If the software signal is not output through the control unit 180, the switching unit 250 performs a switching operation based on the hardware signal provided from the ID terminal or the TH terminal, so that the main battery and the power management unit 260 You can change the power path to connect.

In another embodiment, when the HW IC 252 is not present in the switching unit 250, the controller 180 may not output a software signal for controlling the switching operation of the switching unit 250 for a predetermined period of time.

The battery remaining amount measuring unit 270 may measure the open circuit voltage of the main battery according to a control command of the controller 180 (S345). The battery remaining amount measuring unit 270 can accurately calculate an initial battery remaining capacity (SOC) based on the measured open circuit voltage. At this time, the battery remaining amount measuring unit 270 may calculate the SOC using a voltage tracking method.

The battery remaining amount measuring unit 270 may provide the control unit 180 with the OCV value and / or the SOC value of the main battery.

When the OCV measurement or the SOC calculation of the main battery is completed, the control unit 180 outputs a software signal for controlling the switching operation of the switching unit 250 to change the power supply path so that the main battery and the power management unit 260 are connected to each other (S350).

The control unit 180 can continue the operation of the terminal system by providing the power supplied from the main battery to the main body of the mobile terminal 100 through the power management unit 260 at step S355.

The control unit 180 may repeatedly perform the operations of steps 315 to 355 until the power is turned off (S360).

As described above, the mobile terminal according to the embodiment of the present invention not only can maintain the operation of the corresponding system by applying the power of the backup battery to the terminal system when the main battery is replaced, The initial capacity (SOC) of the battery can be accurately calculated by measuring the open circuit voltage (OCV).

Hereinafter, the battery power supply sequence according to the switching operation of the switching unit when the main battery is replaced will be described in more detail with reference to FIGS. 4 to 6. FIG.

4 is a diagram referred to explain a battery power supply sequence in a normal state.

4, the power supply unit 190 of the mobile terminal 100 includes a main battery 410, a backup battery 420, a switching unit 430, a power management unit 440, and a battery remaining amount measurement unit 450 . For convenience of explanation, the remaining components of the power supply unit 190, which are not directly related to the present invention, are omitted.

The power supply unit 190 is configured such that the power output from the main battery 410 is supplied to the terminal system through the power management unit 440. [ That is, as shown in the figure, the main battery 410 and the power management unit 440 maintain a switching state connected to each other.

This power supply path is maintained until the main battery 410 is detached, so that the mobile terminal 100 can perform the overall operation of the terminal system based on the power supplied from the main battery 410.

5 is a diagram referred to explain a battery power supply sequence when the main battery is detached.

5, when the main battery 410 is detached from the rear case, the power supply unit 190 is configured such that the power output from the backup battery 420 is provided to the terminal system through the power management unit 440.

That is, as shown in the figure, the backup battery 420 and the power management unit 440 are connected to each other according to the switching operation of the switching unit 430. At this time, the switching unit 430 may perform a switching operation based on the hardware signal received from the ID terminal 411 or the TH terminal 412 of the main battery 410.

This power supply path is maintained until the new main battery 410 is mounted, so that the mobile terminal 100 can continuously maintain the operation of the terminal system based on the power supplied from the backup battery 420.

6A and 6B are diagrams for explaining a battery power supply sequence when the main battery is mounted.

6A, when the main battery 410 is mounted on the rear case, the power supply unit 190 may be configured such that the power output from the backup battery 420 is supplied to the terminal system through the power management unit 440 for a predetermined period of time .

That is, as shown in the figure, even when the main battery is installed, the backup battery 420 and the power management unit 440 maintain the switching state connected to each other for a predetermined period of time.

The battery remaining amount measuring unit 450 measures an open circuit voltage (OCV) of the main battery 410 and calculates an initial capacity of the main battery 410 based on the measured open circuit voltage (SOC) can be accurately calculated.

6B, when the OCV measurement or the SOC calculation of the main battery 410 is completed, the power supply unit 190 supplies power from the main battery 410 to the terminal system through the power management unit 440 .

That is, as shown in the figure, the main battery 410 and the power management unit 440 are connected to each other according to the switching operation of the switching unit 430. At this time, the switching unit 430 may perform a switching operation based on the software signal received from the control unit 180. [

The power supply path in the normal state is maintained until the main battery 410 is detached, and the mobile terminal 100 can perform the overall operation of the terminal system based on the power supplied from the main battery 410.

7 is a diagram for explaining an operation of a mobile terminal providing a user interface for entering a battery exchange mode.

7, when the power key is selected, the mobile terminal 100 displays a power off menu 710, a restart menu 720, a flight mode menu 730, a battery exchange mode menu 730, ). ≪ / RTI > At this time, the battery exchange mode menu 730 can be configured to be displayed only when the backup battery function is activated through a setting menu or the like.

When the battery exchange mode menu 730 is selected, the mobile terminal 100 transmits a first notification message 750 including notification information on the battery exchange mode and an option menu for selecting whether to enter the battery exchange mode And can be displayed on the display unit 151. [

When the confirmation menu 751 of the option menu is selected, the mobile terminal 100 may enter a battery swap mode. At this time, the mobile terminal 100 may terminate the operation of the predetermined program or application to minimize the consumption of the backup battery.

The mobile terminal 100 may display on the display unit 151 a second notification message 760 including information on the current operation mode and information on the battery exchangeable time in the battery exchange mode.

In another embodiment, when there is an auxiliary display unit (not shown), the mobile terminal 100 may turn off the main display unit and display the second notification message 760 on the auxiliary display unit. Accordingly, the user of the mobile terminal 100 refers to the notification information displayed on the display unit or the auxiliary display unit to replace the existing battery with a new battery.

When the main battery is replaced within the displayed time, the mobile terminal 100 can display the home screen or the previous operation screen (i.e., the operation screen at the time of selecting the power key) on the display unit 151 after completing the battery exchange mode have. On the other hand, if the battery is not replaced within the time indicated on the screen, the mobile terminal 100 can automatically shut down the power of the terminal system.

Meanwhile, the user of the mobile terminal 100 can not only replace the battery by entering the battery exchange mode, but also can replace the battery at random without entering the battery exchange mode.

When the battery is removed at random, the mobile terminal 100 can turn off the CPU core, minimize the CPU frequency, and turn off the display of the display unit 151, thereby minimizing the power consumption of the terminal system. Also, the mobile terminal 100 monitors the voltage of the backup battery and can turn off the power of the terminal system when the voltage falls below a predetermined voltage.

On the contrary, when the battery is randomly mounted before the power is turned off, the mobile terminal 100 turns on the CPU core, increases the CPU frequency, and turns on the screen of the display unit 151, State can be restored. In addition, the mobile terminal 100 can confirm whether the newly replaced battery is genuine or not, and recalculate the capacity (SOC) of the battery.

The present invention described above can be embodied as computer-readable codes on a medium on which a program is recorded. The computer readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of the computer readable medium include a hard disk drive (HDD), a solid state disk (SSD), a silicon disk drive (SDD), a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, And may also be embodied in the form of a carrier wave (for example, transmission over the Internet), which is implemented as the above code and is implemented as a different implementation from the computer-readable medium. Also, the computer may include a control unit 180 of the terminal. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

100: mobile terminal 110: wireless communication unit
120: input unit 140: sensing unit
150: output unit 160: interface unit
170: memory 180:
190: Power supply

Claims (7)

Applying power of the main battery to the terminal system;
Changing a power path of the switching unit so that power of the backup battery is applied to the terminal system when the main battery is detached;
Mounting the main battery;
Measuring an open circuit voltage (OCV) of the main battery when the main battery is installed, while maintaining the changed power supply path; And
And restoring the power supply path of the switching unit to the original state so that power of the main battery is applied to the terminal system after the open circuit voltage is measured,
Further comprising the step of providing a separate menu for selecting or setting an execution end of a running program or an application when power of the backup battery is applied to the terminal system. The method according to claim 1,
And calculating an initial capacity (SOC) of the main battery based on the measured open circuit voltage. The method according to claim 1,
And providing the switching unit with a signal for maintaining the changed power path for a predetermined period of time. 2. The method of claim 1, wherein the power-
Wherein the power supply path of the switching unit is changed based on a hardware signal output from the ID terminal or the TH terminal of the main battery. 2. The method of claim 1,
And restoring the power supply path of the switching unit to the original state based on the software signal output from the control unit. The method according to claim 1,
When the backup battery function is activated, providing a menu for entering the battery exchange mode. A computer-readable recording medium on which a program for executing the control method of a mobile terminal according to any one of claims 1 to 6 is recorded.

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