WO2016021765A1 - Diary having charging function - Google Patents

Abstract

The present invention relates to a diary having a charging function. The diary in which a plurality of inner paper sheets are bound by a holder within a cover comprises a charging device having at least one battery embedded therein, wherein the battery is fixed to the diary by the holder, provides charging power to an external device through a discharging operation when connected to the external device in a wired or wireless manner, and performs a charging operation according to a charge control command, and thus a variety of portable mobile devices can be charged conveniently and easily, regardless of time and place, when a battery of the mobile devices is unexpectedly discharged, and various functions such as a memory function and an interface function with an external device can be provided.

Description

   Diary with charging function

The present invention relates to a diary with a charging function, and more particularly includes a charging device having a memory function and a USB OTG (On-The-Go) interface function, such as wireless or wired charging function, portability, etc. It relates to a diary having a charging function with a function.

As communication technology develops, various kinds of mobile devices have been developed and used. These conventional mobile devices are provided with a battery for supplying power by using electricity as energy, which is a rechargeable battery that can be used for charging.

Since the rechargeable battery of such a mobile device has a limitation in capacity, it has to be charged frequently and various charging technologies have been developed.

There are various techniques related to such a filling technique, and there exist patent documents 1-4 as an example.

Patent Literature 1 is to form a sensor to discharge the energy of the mobile phone battery and at the same time to recharge the energy to long life of the battery, the energy supply is turned on when the current power is turned on by the input control means The electrical circuit is operated while being smooth.

Patent document 2 is a central server that stores the upgrade control program required to charge the upgraded mobile phone battery; And a graphic LCD displaying a menu for selecting a type of mobile phone to charge a mobile phone battery, and a menu for selecting various languages for charging a mobile phone battery in various countries, and being connected to a central server through the Internet. When a mobile phone battery is recently released and is not listed in the menu, the mobile phone battery is provided with a charger that charges a recently released mobile phone battery by downloading a charging specification related thereto from a central server.

Patent document 3 is a charging unit for applying power to the mobile device; A communication unit receiving data information of the mobile device from the mobile device; An information-weight converter configured to determine a weight corresponding to the data information of the mobile device transmitted from the communication unit; And a weight display unit which displays the determined weight, and displays the data information of the mobile device in the form of weight even while charging, so that the user can receive the increase or decrease of the data and the current data information level in the same form as the weight of the mobile device. Therefore, the user can intuitively feel the amount of information of the data information.

Patent document 4 is a mobile device holder for mounting a mobile device; Body support for supporting the mobile device holder; It includes a power supply for supplying power to the mobile device, the mobile device holder, the mobile device support for supporting the lower portion of the mobile device is inserted; A mobile device guide unit configured to suppress movement of both sides of the mobile device and guide the movement in the direction of insertion; A mobile device fixing part which contacts both upper sides of the mobile device and fixes the mobile device by applying pressure using an elastic force; A fixing part support frame to fix the mobile device fixing part supported by the mobile device guide part; It is coupled to the main body support and the cradle fixing portion for supporting the mobile device support and a connector fixing portion for fixing the connector is connected to the mobile device to supply power.

These conventional technologies, when the user goes out from home or office, when the battery is discharged due to the sudden increase in the call volume or the increase in the usage of the mobile communication terminal, the user to charge the mobile communication terminal, the convenience store or other electronics The disadvantage is that you need to find a device charging station.

In addition, when charging the mobile device in this way, the charging time takes a long time, so if the user needs to charge quickly, there is a difficulty in properly charging within the desired time.

The present invention has been developed to solve the problems of the prior art as described above, regardless of time and place when the battery of various portable mobile devices such as mobile communication terminal, game machine, digital camera suddenly discharged, it is easy and In addition to being able to charge easily, an object of the present invention is to provide a diary with a charging function having various functions such as a USB memory function and a USB OTG interface function.

The present invention is not only thin and easy to carry by placing a charging circuit in the housing of the thin plate, but also can display a mark such as advertising on the outside, and excellent advertising and promotional effects, various functions such as USB memory function and USB OTG interface function, etc. It is an object of the present invention to provide a diary having a charging function having a wireless charging function, which is easy to carry, has a fast charging, and is easy to carry.

Diary with a charging function according to the present invention for achieving this purpose, in the diary a plurality of recording or binding by the holder inside the cover, fixed to the diary by the holder, wired or wireless with an external device When connected, the charging device provides charging power to the external device through a discharge operation, and includes a charging device including at least one battery in which the charging operation is performed according to a charging control command.

In this case, the charging device, the battery is built-in, the housing formed to correspond to the shape of the recording; A diary mounting hole formed at one side of the housing to be detachable from the holder; A circuit unit accommodated in the housing to control a discharge operation or a charging operation of the battery; And connection means protruding on one side or both sides of the housing and connected to the circuit unit to perform an interface with the external device.

At least one diary mounting hole may be provided in a long hole shape, and the battery may further include a flexible substrate connecting the battery and the circuit unit when the battery and the circuit unit are separated.

On the other hand, the circuit unit, a charging circuit for charging the battery by outputting a charge control command for controlling the power supplied to the battery; A charging coil configured to perform a wireless charging operation by using an induction magnetic field on the battery of the external device; A wireless charging controller controlling a current flowing through the charging coil; A central processor which performs various control operations on the charging circuit, the charging coil, or the wireless charging controller, and checks the state of the battery in real time to command a discharge operation or a charging operation; And an internal power source for supplying power to the circuit unit.

The housing may include a plurality of storage spaces for accommodating a plurality of batteries, and further include a folding portion formed to be folded between the storage spaces.

The circuit unit may further include: a key LED for displaying a state of charge of the battery and instructing a mode change of any one of a charging mode, a power-off mode, and a connection mode of the external device according to a user's selection; An output control circuit for controlling the output of said battery between said battery and connecting means; A conversion circuit for converting the voltage output from the output control circuit into a voltage form suitable for the external device or an internal power supply by the control of the central processor; And a battery protection circuit electrically connected between the battery and the output control circuit to protect the battery by controlling overcharge or overdischarge of the battery.

On the other hand, the charging device, SD card slot in which the memory of the SD card type is mounted; An SD card control circuit for controlling a memory mounted in the SD card slot; And an auxiliary connector for connecting the SD card type memory with an external device.

The charging device has a USB socket, a micro socket, a connection line for connecting the USB socket and the micro socket so that the portable connection cable is detachable on one side, and the USB socket or the micro socket is connected to the external device by the portable connection cable. It is characterized in that connected with.

Diary having a charging function according to the present invention is provided with a charging circuit between the housing of the thin plate is thin and easy to carry, it is mounted on the diary has the effect that can be carried more safely and easily.

In addition, the present invention can display a mark, such as advertising on the outer surface not only has an advertising and promotional effect, but also has a USB memory function and USB OTG interface function can be used for various purposes.

In addition, it is equipped with a wireless charging function to make the charging of the mobile phone easier, as well as to make the charging device foldable, there is an effect that can be carried out more easily by folding and narrowing the area when carrying.

That is, the charging device according to the present invention is a battery consumption due to the increase in the amount of battery consumption as the smart phone is used in various applications, web surfing, video, etc., the capacity of the auxiliary charger increases proportionally as the size is also increased It solves the conventional problem that it is inconvenient to do, and it is not only easy to carry by attaching to the diary, but also because the internal battery is designed with a large capacity, and it is designed by dividing the battery into two, so that it can be folded and carried. It works.

In addition, the charging device of the present invention can be charged at the same time regardless of the place, and because the capacity is large, not only can be charged several times, but also because the wireless charging transmission module is mounted, while carrying a smartphone equipped with a reception module in the diary The effect is that you can automatically charge your smartphone's battery wirelessly.

1 is a diagram illustrating a diary having a charging function according to an embodiment of the present invention.

2 is a view for explaining a state in which an external device is connected to the charging device of FIG.

3 is a perspective view illustrating the charging device of FIG.

4 is an exploded perspective view of a charging device according to an embodiment of the present invention;

5 is an exploded perspective view of a charging device according to another embodiment of the present invention.

6 is a block diagram illustrating a configuration of a circuit unit according to an embodiment of the present invention.

7 is an enlarged view for explaining a KID according to an embodiment of the present invention

8 is a view illustrating a state in which a memory or an external device is mounted in a charging device according to an embodiment of the present invention.

9 is a view illustrating a battery charging state of a charging device according to an embodiment of the present invention.

10 is a view illustrating a state in which a notebook is connected to a charging device according to an embodiment of the present invention.

11 is a view for explaining a folded state of the charging device according to an embodiment of the present invention;

12 is a view for explaining a charging device according to another embodiment of the present invention.

13 is a view for explaining a charging device according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, a multi-purpose charging device for a diary installation having a wireless charging function according to the present invention will be described in detail.

As the present invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the drawings, similar reference numerals are used for similar elements. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The present invention is not only easy to carry and thin, but also portable, and can be used as a connection means between other mobile devices as well as supplying power to various mobile devices.

1 is a view illustrating a diary having a charging function according to an embodiment of the present invention, Figure 2 is a view illustrating a state in which an external device is connected to the charging device of FIG.

1 and 2, a diary 200 having a charging function is installed in a cover forming an appearance, and a charging device is fixed to one side of a diary where a plurality of recordings are bound by a holder 200h. Can be archived.

The charging device is fixed to the diary by the holder (200h), when the wired or wireless connection with the external device provides a charging power to the external device through the discharge operation, at least one or more batteries that the charging operation is performed according to the charge control command Has built in.

The charging device includes a diary mounting hole 10h formed in a long hole shape so as to be detached from the holder 200h, and the diary mounting hole 10h is inserted into the holder 200h to be integrally carried with the diary 200.

Diary mounting hole (10h) may be formed in one long hole in the longitudinal direction at one side edge of the filling device or divided into a plurality. The reason for forming the diary mounting hole 10h in the form of a long hole is that the intervals between the holders 200h may vary according to the producers or specifications of the diary. It is to be able to attach to.

The charging device may provide a wireless charging function or a wired charging function to an external device such as an OTG, a mobile phone, or a mobile device. OTG can be either an external hard disk or a USB storage medium, and OTG function occurs when the smartphone is connected through the bottom cable.

The filling device may vary in size depending on the width of the diary 200, but is preferably 120 to 169 mm wide, 190 to 250 mm long, and 4 to 10 mm thick. In particular, considering the width of the diary commonly used, it is preferable that the width is 149 mm, length 220 mm.

3 is a perspective view illustrating the charging device of FIG. 1, FIG. 4 is an exploded perspective view of a charging device according to an embodiment of the present invention, and FIG. 5 is an exploded perspective view of the charging device according to another embodiment of the present invention. .

3 to 5, the charging device includes a housing 10, a circuit unit 20 protected by the housing 10, and connection means installed in the circuit unit 20 to interface with an external device. .

The housing 10 may be formed to correspond to the shape of the diary 200, and may be manufactured in the form of a slot having a slot-shaped groove into which a circuit board on which the circuit unit 20 is installed may be inserted. And two thin plates as shown in FIG. 5.

The housing 10 has at least one or more storage spaces in which the batteries 22 are stored, and two batteries may be built in two storage spaces, and three batteries may be built in three storage spaces. It can be built in.

In addition, the housing 10 is composed of a front cover (10f) and a back cover (10b) of the thin plate, between the two covers (10f, 10b) to install a circuit portion 20 and the battery 22 to protect them It is desirable to be able to. Of course, the housing 10 may be changed in appearance or structure of the housing 10 according to the use, shape or size of the diary, so that the connecting means for interfacing with an external device is exposed to the outside of the housing 10. Many holes are formed.

In addition, a predetermined emblem 10d may be displayed on the surface of the housing 10. The emblem 10d may be a symbol, a character, a figure, a three-dimensional shape, or a combination thereof and color combinations thereof. have. Such marks may be designs and advertisements relating to business cards, credit cards, promotional materials, and the like.

In addition, although one surface of the housing 10 may be an impermeable member, in some cases, the housing 10 may be made of a light transmissive member or a translucent member. For example, the top surface is generally a permeable plastic such as acrylic resin, polystyrene (PS), polymethyl methacrylate (PMMA), cyclic olefin copoly (COC), polyethylene terephthalate (PET), resin, etc. It is made of a material capable of performing a light diffusing function, and at least one surface thereof may have a predetermined pattern formed thereon.

In this case, the pattern may be a predetermined emblem as described above. The pattern forming the emblem may be a projection projecting to the surface of the housing, and the pattern may be a plurality of projections arranged side by side in one direction, or may be a stripe shape, an embossing pattern, an intaglio pattern ( At least one of an engraving pattern and a printing pattern may be formed, or may be formed of a plurality of fluorescent particles.

6 is a block diagram illustrating a configuration of a circuit unit according to an embodiment of the present invention, FIG. 7 is an enlarged view illustrating a KID according to an embodiment of the present invention, and FIG. 8 is an embodiment of the present invention. A diagram illustrating a state in which a memory or an external device is mounted in the charging device according to the present invention.

6 to 8, the circuit unit 20 is installed inside the housing 10, and connection means for connecting an external device are connected to a circuit of the circuit unit 20, and the connection means is a charging adapter. DC jack 10j to which 100 is connected, and connectors 23 and 28a to which external devices such as mobile devices are connected.

The circuit unit 20 may include a charging circuit 21 for controlling a power charged in the battery 22, at least one battery 22 charged according to a charging control command of the charging circuit 21, and a battery 22. One or more USB connectors 23 to which the device is connected, a charging coil 24 for charging a battery of an external device to be charged wirelessly, a wireless charging controller 25 for controlling a current flowing through the charging coil 24, a circuit unit 20 It includes a central processor 26 for controlling each component of the) and the internal power source 27 for supplying power to the circuit unit (20).

The charging circuit 21 is a circuit for controlling the power supplied to the battery 22 so that the battery 220 is charged. The charging circuit 21 may be configured by selecting any one of the charging circuits used to charge the rechargeable battery. Detailed description will be omitted.

The battery 22 may include at least two or more batteries to use another battery when an abnormality occurs in one battery or is discharged. That is, only one battery 22 is installed as shown in FIG. 4, but the capacity of the battery is installed as large, or as shown in FIG. 5, two relatively small batteries 22 are connected in parallel. Can be installed.

As shown in FIGS. 4 and 5, the battery 22 and the circuit unit 20 are separately configured, and a flexible substrate 20f may be provided to connect the circuit unit 20 to the battery 22. The black movable substrate 20f serves as a connection line connecting the battery 22 and the circuit unit 20.

The USB connector 23 is a connection means for electrically connecting a mobile device or a fixed terminal. The mobile device may be a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, or a PDA (Personal Digital Assistants). ), A portable multimedia player (PMP), navigation, and the like, and the fixed terminal may include a digital TV and a desktop computer.

A plurality of USB connectors 23 may be installed, and a connection pin of each USB connector 23 may vary depending on the type of external device to be connected. For example, one USB connector 23 may be a socket, and the other USB connector 23 may be a plug.

In addition, the USB connectors 23 are preferably disposed on the same plane of the side wall of the housing 10 so that the thickness of the charging device can be made thin, that is, the opening of one of the plurality of connectors and the other connector of the other connector. The openings may be arranged to face in the same direction, one connector may be a USB socket, and the other connector may be a Secure Digital (SD) memory socket. The connectors may be fixed in the housing 10 or may be detachably installed in the housing 10. The direction of opening and closing of the connector may be perpendicular to the direction of the opening of the other connector with respect to the direction of the opening of one of the connectors.

The charging coil 24 and the wireless charging controller 25 are means for wirelessly charging a battery of an external device, and a magnetic field is induced in the charging coil 24 by the control of the wireless charging controller 25. It uses a device or magnetic resonance to charge the battery of an external device. The wireless charging method as described above may be a commonly known electromagnetic induction method or magnetic resonance method, the electromagnetic induction charging technology is a method of charging the battery while the two pads inside the charging pad and the mobile phone induces an induced current Magnetic resonance is a method of charging power by transmitting power at the same frequency to a transmitting and receiving terminal 1 ~ 2m away.

The central processor 26 is for controlling each component constituting the circuit unit 20, and checks the state of each battery 22, selects a charged battery and connects it to the connector, and the uncharged battery 22 Will automatically charge. Of course, by checking the state of each battery in real time, and also by using the power from the external device to reduce the amount of charge of the battery 22 to automatically switch also serves to control the power of the other battery 22 to be supplied to the external device. .

In addition, as shown in FIG. 7, the charging device checks the state of charge of the battery 22 by the control of the central processor 26, and displays the key LED 29 as a means for displaying the checked state of charge externally. Equipped.

The key LED 29 is made of an LED, and is exposed to the outside of the housing 10 to indicate an operating state of the charging device and serves as an input means. That is, the key LED 29 may emit green light when the state of the charging device is discharged by light emission, for example, when the battery is fully charged, and emit red light when the battery is discharged, and is pressed by the user. It is also possible to switch the charging mode by sending a signal to the central processor 26.

That is, the central processing unit 26 switches the mode by pressing the key LED 29. In the mode switching method, the mode is switched according to the number of times the key LED 29 is pressed.

For example, the mode is switched by switching to a charging mode, an OTG mode for connecting an external device, and a power off mode according to the number of times the key LED 29 is pressed. Each time the mode is switched, the color of the LED changes to indicate the current mode.

Since the circuit unit 20 is composed of electric and electronic elements, a power source is required to drive them, and the internal power source 27 is provided as the power source, and the internal power source is automatically charged when the adapter is connected. The charging device of the present invention can be used even when disconnected.

The circuit unit 20 configured as described above is provided with an output control circuit 22o as a means for controlling the output of the battery. That is, between the battery 22 and the USB connector 23, the output control circuit 22o for controlling the output of the battery 22, and the voltage output from the output control circuit 22o to transform the voltage to match the mobile device The transformer 22b is provided to allow the power output from the battery 22 to be output at a desired voltage from an external device.

The transformer circuit 22b is a means for boosting the power output from the battery 22 by the control signal of the central processor 26 and transferring the power to the USB connector. The voltage output circuit 22b may boost the power output from the battery 220 to about 5V. As an example, when the voltage charged in the battery 22 is about 3.7V, the transformer circuit 22b boosts the voltage of about 3.7V to about 5V and supplies it to the external device through the USB connector 23. Of course, when the voltage required by the external device is low, the output of the battery may be reduced and output, that is, the power output from the battery 22 may be adjusted to an internal power source and stored in the internal power source 27. The internal power source 27 may be about 1.8V and about 3.3V.

In addition, one side of the battery 22 may further include a battery protection circuit 22s to protect the battery 22. The battery protection circuit 22s is electrically connected between the battery 22 and the output control circuit 22o to protect the battery controlling overcharge and overdischarge of the battery 22. That is, the battery protection circuit 22s prevents the battery from being damaged by overcharge, overdischarge, and overcurrent.

Also, as shown in FIG. 8, the charging device includes an SD card slot 28 to which an SD card type memory is mounted, an SD card control circuit 28c and an SD card to control an SD card installed in the SD card slot 28. It may further include an auxiliary connector 28a for connecting to an external mobile device.

The SD card slot 28 is a slot into which the SD card is detachably inserted, and inserts a memory in the form of an SD card so that the charging device can be used as a memory. An auxiliary connector 28a is provided as a means for connecting a memory installed in the SD card slot 28 to be used by an external device, and the auxiliary connector 28a may be in the form of a USB connector 23.

The auxiliary connector 28a is a connector to which an OTG-supported mobile device can be connected and controls the auxiliary connector 28a and the SD card so that the SD card mounted in the SD card slot 28 can be used in other mobile devices. A USB switch 28s is provided between the circuits 28c. The USB switch 28s is connected to any one of the USB connectors 23 so as to select the auxiliary connector 28a and the USB connector 23 by the operation of the USB switch 28s. Of course, the driving of the USB switch 28s can be made by switching the mode by the manipulation of the key LED 29 as described above.

Such a charging device may connect a memory to the auxiliary connector 28a, connect a mobile phone to another USB connector, and transmit information of the mobile phone to the memory, or transmit information of the memory to the mobile phone.

9 is a view illustrating a state of charge of a battery of a charging device according to an embodiment of the present invention, and FIG. 10 is a view illustrating a state in which a notebook is connected to a charging device according to an embodiment of the present invention.

As shown in Figure 9 and 10, the charging device may be installed detachably portable connecting cable (30). The portable connection cable 30 is a means for connecting an external device to a charging device so as to use a battery or a memory so as to connect a USB socket 30u, a microsocket 30m, and a connection line 30l connecting them. USB socket (30u) and the micro socket (30m) is stored in the pinned to the connector provided in the charging device.

In addition, the charging device may be connected to an outlet or a notebook installed on a wall to charge the battery, and the charging device may be used as a power source of the notebook or as an information transmission medium. That is, the charging device may transmit information of the notebook to the mobile phone or transmit information of the mobile phone to the notebook. When the notebook requires power, the charging device uses the battery power of the charging device as the power of the notebook, and the battery capacity of the charging device may be insufficient. In this case, the battery of the charging device can be charged through the laptop.

11 is a view for explaining a folded state of the charging device according to an embodiment of the present invention, Figure 12 is a view for explaining a charging device according to another embodiment of the present invention, Figure 13 is yet another embodiment of the present invention A diagram illustrating a charging device according to an embodiment.

Referring to FIGS. 11 to 13, when the two batteries are respectively stored in the storage spaces, the charging device is formed to be folded in half by forming the folding portions 11 between the storage spaces.

If there are three storage spaces, three batteries are stored, and the folding portions 11 are formed between the storage spaces, respectively. At this time, the folding direction of the folding portion 11 is determined so that the connecting means formed at both ends of the charging device can be exposed to the outside.

The charging device may be mounted and carried on the diary 200, but may be inconvenient to carry when the diary 200 is not used. Thus, when the battery is folded in half as shown in FIG. It may be easier to carry with.

The folding unit 11 may select and use a folding structure that is commonly used in existing mobile phones, etc., and a detailed description thereof will be omitted.

On the other hand, as shown in Figure 13, the charging device is a large capacity battery is stored in the storage space in the case of one storage space, wherein the housing 10 is in the form of a thin thin plate, such as recording of the diary 200 It may be formed and used to be fixed not only to a diary but also to other notes or books.

Such a charging device may be used as a connecting means for connecting a storage device as well as for charging other mobile devices.

Claims (9)

A diary in which a plurality of recordings are bound by a holder inside a cover, The charging is fixed to the diary by the holder, when the wired or wireless connection to the external device, the charging power is provided to the external device through a discharge operation, the charging is built in at least one battery is performed according to the charge control command Diary with charging function, characterized in that it comprises a device. The method of claim 1, The charging device, A housing in which the battery is embedded and formed to correspond to the shape of the recording or the like; A diary mounting hole formed at one side of the housing to be detachable from the holder; A circuit unit accommodated in the housing to control a discharge operation or a charging operation of the battery; And And a connecting means protruding on one side or both sides of the housing and connected to the circuit unit to interface with the external device. The method of claim 2, Diary mounting hole is a diary with a charging function, characterized in that provided with at least one or more in the shape of a long hole. The method of claim 2, When the battery and the circuit portion is separated, Diary having a charging function further comprises a flexible substrate for connecting the battery and the circuit portion. The method of claim 2, The circuit portion, A charging circuit configured to charge the battery by outputting a charge control command for controlling power supplied to the battery; A charging coil configured to perform a wireless charging operation by using an induction magnetic field on the battery of the external device; A wireless charging controller controlling a current flowing through the charging coil; A central processor which performs various control operations on the charging circuit, the charging coil, or the wireless charging controller, and checks the state of the battery in real time to command a discharge operation or a charging operation; And Diary having a charging function, characterized in that it comprises an internal power supply for supplying power in the circuit portion. The method of claim 2, The housing is A diary having a charging function, characterized in that a plurality of storage spaces for storing a plurality of batteries is formed, and further comprising a folding portion formed to be folded between the respective storage spaces. The method of claim 5, The circuit portion, A key LED for displaying a charging state of the battery and instructing a mode change of any one of a charging mode, a power-off mode, and a connection mode of the external device according to a user's selection; An output control circuit for controlling the output of said battery between said battery and connecting means; A conversion circuit for converting the voltage output from the output control circuit into a voltage form suitable for the external device or an internal power supply by the control of the central processor; And a battery protection circuit electrically connected between the battery and the output control circuit to control overcharge or overdischarge of the battery to protect the battery. The method of claim 1, The charging device, An SD card slot into which an SD card type memory is mounted; An SD card control circuit for controlling a memory mounted in the SD card slot; And And a secondary connector for connecting the SD card type memory to an external device. The method of claim 8, The charging device has a USB socket, a micro socket, a connection line connecting the USB socket and the micro socket so that the portable connection cable is detachable on one side, The USB socket or the micro socket is a diary with a charging function, characterized in that connected to the external device by the portable connection cable.

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