KR101929765B1 - Mobile device case with the wireless charger - Google Patents

Abstract

The present invention relates to a case for a portable terminal equipped with a wireless charger capable of receiving a wireless power energy for wirelessly transmitting and receiving wireless power, And the module component part is separated from the case so that a function of receiving the wireless power energy is combined with the module component part so that the battery problem of the mobile terminal It is possible to provide a case for a portable terminal which not only solves but also functions as an NF coil to enable a portable terminal to effectively perform near-field communication.

Description

TECHNICAL FIELD [0001] The present invention relates to a case for a mobile terminal equipped with a wireless charger,

The present invention relates to an apparatus for receiving a wireless power energy transmitted from a transmitter of a wireless charger by having a receiver of a wireless charger in a wallet for a portable terminal.

As mobile phones, smart phones, and tablet PCs, which can be called portable terminals, have become common, many accessory technologies for the portable terminals have been developed. Especially, the portable terminal market has a significant increase trend.

The case for the portable terminal is made of leather, soft or hard synthetic resin, and is constructed so as to cover the peripheral surface of the cellular phone and protect it. However, such a cellular phone case does not perform any other functions other than the function of protecting the periphery of the cellular phone by covering it.

Of course, in Prior Art 1, in order to solve a part where a phone number of a person written on a business card or a registration number of a card is frequently called while taking out a business card or card during a call using a mobile phone, A cover member having a pair of flaps connected to each other so as to be folded or unfolded; and a holder provided on an inner surface of the flap and capable of fixing the portable device, wherein the cover member is formed with a pocket, A wallet-type mobile phone case is disclosed which is detachably coupled to a member.

However, the above function does not greatly improve the function of the case for the mobile terminal. However, such a case has an inconvenience that the thickness of the portable terminal becomes thick, in spite of the difficulty of performing other functions in addition to the function of protecting the periphery of the portable terminal. Therefore, it is necessary to combine the technique for improving the function of the portable terminal by utilizing the thick portion.

Prior Art 1: Korean Utility Model Registration No. 20-0451310, Registration Date: December 2, 2010

An object of the present invention is to incorporate a technique for improving the function of a portable terminal into a casing for a portable terminal having a certain thickness, more specifically, to combine a function of receiving wireless power energy, The present invention solves the battery problem and also enables the portable terminal to effectively perform near-field communication in addition to the function of the NF coil.

The object of the present invention is achieved by a radio frequency power supply device comprising: a radio power receiving coil installed inside and receiving a radio power energy; and a + electrode connecting terminal electrically connected to both terminals of the radio power receiving coil, A case for providing a function to mount the terminal, a USB terminal coupled to a USB terminal of the portable terminal, and a + electrode connection terminal electrically connected to a + electrode connection terminal provided on an outer surface of the case for the portable terminal And the module component part rectifies the wireless power energy received from the wireless power receiving coil and provides the wireless power energy to the USB terminal of the portable terminal, wherein the module component part has a separate structure detachable from the case And a case for a portable terminal equipped with a wireless charger It is achieved.

When the case and the module part are connected to each other through a connection terminal for connecting an electric signal, the connection terminal for connecting the coil and the connection terminal for connecting the NFC coil are mutually connected Separated.

Meanwhile, the signal from the coil and the signal from the NFC coil are connected to the portable terminal through the USB terminal, and the USB terminal is provided in the module part having the separately separated module parts.

In addition, there is provided a coil capable of receiving wireless power energy for transmitting wireless power, a function of mounting a wireless terminal, or a function of switching the wireless power energy received from the coil to be able to be supplied to the wireless terminal And the module component part is provided in the case.

Also, when wireless power energy is supplied to the portable terminal through the module part, the USB terminal is connected to the case bottom plate. When the NFC coil is provided in the portable terminal, And the NFC coils provided in the portable terminal are not overlapped with each other.

In addition, when a module part is provided on the bottom plate of the case and a coil capable of receiving radio power is provided on the bottom plate of the case, the area of the coil is larger than the area of the module part , The USB terminal can be folded and unfolded.

According to the present invention, it is possible to solve the battery problem of the portable terminal by incorporating the function of receiving the wireless power energy, and also to provide a portable terminal capable of effectively performing near- A case can be provided.

1 to 4 show the principle of the wireless charger and the coil structure.
5 to 10 are views of an embodiment in which a cellular phone case is provided with a wireless charger.
Figs. 11 and 12 are views of an embodiment in which a case is provided with a power energy receiving coil and an NFC coil.
13 to 16 are views showing an embodiment in which a component provided in a module is provided in a case according to another embodiment of the present invention.
17 and 18 are views of an embodiment in which a case bottom plate is provided with both a coil for wireless power reception and an NFC coil,
19 and 20 are views showing an embodiment in which a battery may be further provided on a bottom plate.

Hereinafter, a case of a portable terminal equipped with a wireless charger according to an embodiment of the present invention will be described in detail.

The portable terminal in the present invention refers to a mobile phone, a smart phone, and a tablet PC. That is, it means a portable communication device.

That is, in the present invention, a wireless power receiver capable of receiving wireless power energy is provided in a case of a portable terminal, so that power supply is convenient when the portable terminal is used.

- Example 1 -

First, a wireless charging method used in the present invention will be described.

1 to 4 show the principle of the wireless charger and the coil structure.

1 is a view for explaining a wireless charger principle. 1 is a general structure for supplying power energy. First, the receiving unit 200 has a structure in which antenna loop coils 52 and 53 are connected in series to a capacitor C, (31) are connected in parallel with a capacitor (C). The only difference is that the transmitting unit 300 is further provided with a resonance filter, and the resonance filter is configured as a structure in which the coil 52 and the capacitor C are connected in series. It is a matter of course that the series connection and the parallel connection of the loop coil and the capacitor can be changed.

Generally, a wireless charger uses a wireless power consortium (WPC) scheme. In order to transmit a wireless power energy of a WPC scheme, the following conditions are generally satisfied.

"Micro Henry - 12 micro-Henry" inductance value of coil: 3.5 V, voltage: 7-15 V (receiver part basis), frequency: 100-200 kHz, current: 5 V

On the other hand, the coil and the capacitor are connected in series. In the wireless power energy transmission, the medium is an antenna loop coil 52 (53), and the antenna coil 52 (53) has a structure connected to a capacitor and is connected in series.

On the other hand, the KTP system developed by our company has the following characteristics.

(Nano Henry) - 6 "inductance value of coil: 5V or 10W, current: 5V (0.4 - 2.5A), power: 5W or 10W, frequency: 1 to 3MHz or 3 to 10MHz μH (Micro Henry) "

In this case, the voltage and current values shown above do not mean that they exactly correspond to the above numbers, but they do indicate the range.

However, the biggest difference between the WPC and KTP systems is the difference between the coil inductance and frequency. First, the reference can be set to 1 MHz from the difference of the frequency values. That is, the WPC method is low frequency less than 1 MHz (Mega Hertz) and the KTP method is high frequency more than 1 MHz (Mega Hertz).

However, in actual use frequency, the WPC method uses a frequency of 100 - 200 KHz and uses a high frequency in KTP method 1 - 3 or 3 - 10 MHz or more.

The WPC method is "7 micro Henry-12 micro Henry" and the KTP method is "600 nano Henry-6 micro Henry" as the inductance value of the coil.

The KTP scheme having the above characteristics has considerable advantages. For example, a high-frequency component is used for a component that oscillates a frequency, thereby enabling downsizing of the component (generally, the high frequency can reduce the size of the component), reducing the inductance value of the coil, A coil formed by printing on a PCB substrate (or a resin substrate) can be used.

By forming a coil on the substrate, it is advantageous in mass production and can reduce the cost. Also, the number of turns of the coil (turns, the number of turns) is more than 50 times for the WPC method, and the KTP method is also possible for less than 50 times.

On the other hand, the number of turns is a number referred to as a standard to be applied to a mobile phone device. In general, a mobile phone device is a number generally calculated when the area is within a maximum of 100 cm square.

2 is a diagram of an embodiment in which a transmitting unit 300 is provided with a resonator (repeater).

The wireless charger is a general structure for supplying power energy. First, the receiving unit 200 has a structure in which an antenna loop coil 52 for receiving wireless power is connected in series to a capacitor C, and the transmitting unit 300 also transmits wireless power And the transmitting antenna loop coil 31 is connected in parallel with the capacitor C. It is a matter of course that the series connection and the parallel connection of the loop coil and the capacitor can be changed.

Normally, in the present invention, a code is added only to the resonator coil. However, in the present invention as well, the resonator is also referred to as a resonator. And a resonator 31a is also provided in the transmission unit 300. The resonator 31a is not limited to the resonator 31a.

At this time, the antenna loop coils 31 and 52 are used to transmit or receive radio power energy, and the resonator 31a serves to amplify radio power energy.

In order to obtain good efficiency, the antenna loop coil 52 (31) and the resonator 31a must have a certain distance from each other. However, in order to maintain the above-mentioned separation distance, the thickness of the device becomes thicker, and further, the resonator is further provided, thereby increasing the cost of the device.

In the wireless charger of the present invention, the first scheme has the following conditions.

"Micro Henry - 30 micro-Henry", "inductance value of the coil: 1 - 0.7A, power: 3 - 10W, voltage: 7-15V

On the other hand, the coil and the capacitor are connected in series. In the wireless power energy transmission, the medium is an antenna loop coil 52 (53), and the antenna coil 52 (53) has a structure connected to a capacitor and is connected in series.

As another method, the second method may have the following conditions.

"Voltage: 7-24V (based on receiver), Frequency: 1MHz to 20MHz, Current: 1A to 3A, Power: 5 to 30W, Coil inductance value: 600nH (Nano Henry)

At this time, the criterion for distinguishing the two methods is the frequency difference. That is, the reference can be set to 1 MHz. That is, the first scheme is a low frequency of 1 MHz (Mega Hertz) or less and the second scheme is a high frequency of 1 MHz (Mega Hertz) or more.

However, the frequencies used in practice are 100 - 200 KHz, or 6 - 8 MHz or higher.

The first method is " 8 micro Henry-12 micro Henry ", and the second method is "600 nano Henry-2 micro Henry"

At this time, the advantage of the second method is that the coil is formed on the substrate, which is advantageous in mass production and can reduce the unit cost. Also, the number of turns of the coil (turns, the number of turns) may be less than 50 times.

Figures 3 and 4 are views of embodiments illustrating the structure of a coil that transmits and receives wireless power energy.

The coil has a structure corresponding to both the transmission coil 31, the reception coil 52, and the relay coil 31a.

3 is a view of an embodiment showing the shape of a spiral coil, wherein the coil 52 is in the form of a wound as in the drawing. In addition, an NFC (Near Field Communication) coil 51 may be further formed on the outside.

4A is a view showing an embodiment in which a coil is formed on a substrate (a PCB or a flexible substrate, which means a substrate on which a coil can be formed by a printing method).

4 (B) is a view showing an embodiment of the relay coil. Generally, the inductance value of the transmission coil 31 is different from the inductance value of the relay coil 31a provided in the transmission unit. Generally, the inductance value of the relay coil 31a is set to the inductance value of the transmission coil 31 2 to 12 times higher.

Therefore, the length of the relay coil 31a is longer than the length of the transmission coil. In other words, since the inductance value is 2 to 12 times higher, the length of the repeater coil is formed to be 2 to 12 times longer than the length of the transmission coil. And the relation between the transmission coil and the repeater coil is shown as a coil length.

On the other hand, in the optimization relation, when the inductance value of the coil is greater than the inductance value of the transmission coil 31, the inductance value of the coil is 7 to 12 times the optimal value. Then, the length of the repeater coil is formed to be 7-12 times longer.

- Example 2 -

5 to 10 are views of an embodiment in which a cellular phone case is provided with a wireless charger.

As shown in FIGS. 5 to 7, the case for the portable terminal of the present invention provides a structure for supplying power to the portable terminal. A module unit 110 having a USB terminal 112 or a connection terminal can supply power to the portable terminal 150 mounted in the case 100. In addition, the portable terminal 150 and the module unit 110 can be separated from each other, and the portable terminal and the case 100 can also be separated from each other.

5 is a view illustrating a state where the portable terminal 150 mounted on the case 100 and the module 110 are coupled to each other. (110) are separated from each other.

In addition, the case 100 for a portable terminal used in the present invention means a wallet for a portable terminal or a case for a portable terminal which is generally used. As shown in Fig. 6, is composed of a lid 102, a side wall portion 106, a bottom plate 103, a locking portion 107 and the like, and in some cases, a camera mouth 108 is also formed.

The case 100 is made of leather, soft resin, artificial leather or plastic.

In addition, an electrode connection terminal 104 (111) connecting the positive and the negative electrodes between the module unit 110 and the case 100 is further provided in the module unit 110 and the case 100. The module unit 110 further includes a USB terminal 112 to supply power to the portable terminal 150 through the USB terminal 112.

Herein, the USB terminal 112 refers to a general terminal that can be connected to a terminal that can supply an electric signal or a data signal from a portable terminal. In the present invention, such a terminal is connected to a USB terminal 112 ). Therefore, it should be understood that the present invention is included in the scope of the present invention if it has a structure in which the portable terminal is connected to a terminal capable of supplying an electric signal or a data signal from the outside.

In addition, the module unit 110 may be provided with a separate USB terminal 112a. That is, even when the module 110 of the present invention is coupled to the USB terminal 112 of the portable terminal, a separate USB terminal (not shown) may be connected to the module 110 of the present invention 112a.

7 is a view showing in more detail the electrode connection terminals 104 and 111 where positive and negative electrodes are connected between the module unit 110 and the case 100, respectively. The electrode connection terminals (104) and (111) are made of a metal material so as to smooth the flow of electricity.

Meanwhile, the electrode connection terminals 104 and 111 shown in FIG. 7 are not limited to the shapes shown in FIG. It is a matter of course that a normal general connection terminal can be applied to the present invention as long as it is in the form of a terminal capable of connecting a power source.

8 is a view showing that a coil is formed on the bottom plate 103. Fig. That is, in the present invention, the coil 52 is formed inside the bottom plate 103. Therefore, a coil is formed between the outer bottom plate 103a and the inner bottom plate 103b.

The outer bottom plate 103a is formed thicker than the inner bottom plate 103b. The coil 52 is in an insulated state, and it is natural that a coil formed on a spiral coil or a PCB may be variously used. That is, the structure of the coil is not limited in the present invention. Therefore, the coil capable of receiving the radio power energy can be applied to the embodiment of the present invention.

Meanwhile, a parite sheet 63 may be further provided between the coil 52 and the inner bottom plate 103b to enhance the insulation effect.

FIG. 9 is a diagram of an embodiment showing a block diagram capable of supplying wireless power energy to a portable terminal.

The present embodiment is characterized in that it is divided into a module part 110a and a coil part 100a.

Generally, a wireless charging system is composed of a transmitting unit for transmitting power energy and a receiving unit for receiving power energy, and the transmitting unit periodically senses a certain signal to determine whether a charging request signal is sensed. When the charging request signal is detected, the transmission unit of the transmission unit is turned on. Then, the battery voltage on the receiver side is checked through the signal of the receiver, and when the chargeable state is confirmed, the transmission is performed.

At this time, when the state goes into the above state, reception of power energy is performed at the receiving section, and power of the battery of the receiving section is charged.

In the above description, the communication module 11 for exchanging mutual signals between the transmitting and receiving units (Zigbee or the like can be used as the communication module, but other methods can be used as the short-range communication module) A control unit (MCU) 15 that is controlled by a program, and a DC / DC converter 12 that adjusts the voltage or power to match the battery voltage of the final portable terminal 150 or the like. At this time, the DC / DC converter 12 functions to drop the voltage and may include an LDO or a charging IC.

In addition, a charging part (or a matching part) 10 is provided and the charging part also includes a rectifying function to transmit the received radio power energy to the control part.

On the other hand, the antenna loop coil 52 capable of receiving the wireless power energy is provided in the bottom plate 103 of the case 100 as described above. The antenna loop coil 52 is connected in circuit with the devices of the module part 110a of the present invention through the electrode connection terminals 104 and 111. [

In addition, the module unit 110 may be provided with a separate USB terminal 112a. That is, even when the module 110 of the present invention is coupled to the USB terminal 112 of the portable terminal, a separate USB terminal (not shown) may be connected to the module 110 of the present invention 112a. Therefore, a third device is connected to the separate USB terminal 112a.

Generally, the voltage and current amount received by the receiving coil 52, which receives the power energy in the electromotive charging system, are received through the matching part 10 and sent to the control unit (MCU) 15.

In the present invention, in the present invention, the wireless power energy to be transmitted from the transmitting unit (for convenience, the transmitting module is not shown separately but is a normal device capable of transmitting the wireless power energy) And the received energy is transmitted to the module unit 110 through the connection terminals 104 and 111. [ Then, the module unit 110 converts the power energy to be supplied to the battery of the portable terminal, and supplies the converted power energy to the portable terminal through the USB terminal 112.

10 is a view showing the mutual positional relationship between the coil 52 provided in the case and the NFC coil 51 provided in the portable terminal 150. In FIG.

If the portable terminal is equipped with the NFC coil 51, the coil 52 provided in the present invention should not interfere with the communication of the NFC coil 51 provided in the portable terminal. As shown in the drawing, if the NFC coil 51 is provided inside the portable terminal 150, the region of the coil 52 and the region of the NFC coil 51 should not overlap with each other.

That is, the coil region CA is formed in a portion where the NFC coil 51 is not formed in the entire region NA where the NFC coil 51 is formed. Of course, some overlap may not be enough to interfere with communication.

- Example 3 -

Figs. 11 and 12 are views of an embodiment in which a case is provided with a power energy receiving coil and an NFC coil.

Fig. 11 is a block diagram. The process of supplying the power energy received from the coil 52 to the portable terminal 150 is similar to that of the previous embodiment. However, data received through the NFC coil 51 is transmitted to the portable terminal 150 through a separate path.

As shown in the drawing, the coil portion 100a is provided with the receiving coil 52 and the NFC coil 51, and the two coils are separated in a circuit. Therefore, the connection terminal is divided into two paths.

That is, as shown in the figure, a terminal 104a for connecting the coil 52 and a connection terminal 104b for connecting the NFC coil 51 are provided in the connection terminal 104 provided in the case 100, respectively. A terminal 111a for connecting the coil 52 and a connection terminal 111b for connecting the NFC coil 51 are provided in the connection terminal 111 provided in the module unit 100, respectively.

The terminal (104a) and the terminal (111a) to which the coils (52) are connected are connected to the plus (+) part and the minus (-) part respectively. At this time. The minus connection terminal is connected to the ground.

The connection terminals 104b and 111b connecting the module unit 110 and the NFC coil 51 are connected to each other and are connected to the NFC module 13. As a result, .

In the embodiment of FIG. 11, it is needless to say that another USB 112a may be additionally provided as in the embodiment of FIG.

The NFC module 13 is an NFC transmission module. The NFC transmission module includes an analogue interface, an R / F level interface, and a card mode detector. The NFC module 13 transmits data between terminals at a distance of 10 cm. .

In general, NFC is a non-contact type short-range wireless communication module that uses 13.56Mz frequency band as one of RFID tags and transmits data between terminals at a distance of 10cm. In addition to billing, NFC is used extensively in supermarkets and general stores for transporting travel information for goods information and visitors, as well as traffic and access control locks.

12 is a diagram showing in more detail that the connection terminals 104a and 111a for connecting the coil 52 and the connection terminals 104b and 111b for connecting the NFC coil 51 are separately provided. The connection terminal 104a provided in the case 100 is connected to the connection terminal 111a of the module and the connection terminal 104b provided in the case 100 as a terminal for connecting the NFC coil 51. [ Is coupled to the connection terminal 111b of the module section.

Therefore, the terminal 104a for connecting the coil and the terminal 104b for connecting the NFC coil 51 are separated and mutually isolated from each other. Likewise, the connection terminal 11b and the connecting terminal 111a are also separated from each other to be in an insulated state.

It is needless to say that the connection terminal shown in the present invention is not limited to the structure of FIG. That is, the present invention can be applied to the embodiment of the present invention if the terminal for connecting the coil and the terminal for connecting the NFC coil are separated or insulated. Further, each of the connection terminals is made of a metal material so that the flow of electricity is smooth.

In addition, it is a matter of course that a user who wants to use the portable terminal case of the present invention downloads a separate application program, and the application program may exist separately for each communication company.

Example 4 -

13 to 16 illustrate another embodiment of the present invention in which the components provided in the module are provided in the case 100. FIG.

Fig. 13 is a block diagram showing the principle and configuration similar to those of the previous embodiment, only that all components are provided in the case 100. Fig. That is, the case portion 110a and the coil portion 100a can both be mounted on the case 100. For this purpose, all of the parts should be small, such as those having a height of 3 mm or less.

In addition, the USB position has a structure in which the left and right are changed in the arrangement of the entire parts. The USB terminal 112 is also mounted on the case 100. Of course, as in the embodiment of FIG. 9, a separate USB terminal 112a may be further provided.

It should be understood that all components may be provided on the case bottom plate 103 but may be provided on the side surface 106 of the case 100 or the lid 102 for convenience of design. And the connection of the components is preferably carried out in a flexible substrate.

In addition, when the portable terminal is provided with the NFC coil, it is natural that the coil 51 and the NFC coil should be designed not to overlap each other.

13, the NFC coil 51 is not provided, but it is needless to say that an NFC coil is further provided as in the embodiment of FIG. 11, and a component connected to the NFC coil may be further included.

14 is a view showing an embodiment in which the USB terminal 112 is provided in the case 100. Although not particularly shown in the figure, it is a matter of course that the USB terminal 112 can be folded at the end of the case. So that it can be inserted and connected to the connection terminal of the portable terminal.

15 is a view of an embodiment showing a shape in which the USB terminal 112 can be opened. In order to insert the USB terminal 112 connected to the case bottom plate 103 of the present invention into the connection terminal of the portable terminal, the USB terminal 112 must be able to be opened out. This function can be achieved by making a portion of the bottom plate connected to the USB terminal 112 made of a flexible material.

16 is a view showing an embodiment in which the size ratio between the component part 110a and the coil part 100a in the bottom plate 103 is shown. S1 denotes the length of the component part 110a, and S2 denotes the length of the coil part 100a. And S2 is preferably larger than S1. More preferably, a maximum of about 50% is better.

As described above, the size of the coil part 100a is increased as much as possible so that the wireless power energy can be received more easily.

- Example 5 -

17 and 18 are views of an embodiment in which both the coil for receiving wireless power and the NFC coil are provided on the case bottom plate,

17 is a schematic cross-sectional positional view of the coil 52 and the NFC coil 51. As shown in Fig. In the present invention, it is seen that the wireless power receiving coil 52 and the NFC coil 51 can be integrally provided. The integrated type in the present invention means that the coil 52 and the NFC coil 51 are provided on the bottom plate 103 of the case 100. [

The coil 52 and the NFC coil 51 are formed on the same substrate and the insulating layer 55a may be coated therebetween as shown in FIG. The coil 52 and the NFC coil 51 may be formed on a separate substrate 55 as shown in FIG. It is a matter of course that the substrate 55 uses a normal flexible substrate.

Meanwhile, the relative ratio of the coil 52 and the NFC coil 51 can be determined. In the present invention, the NFC coil 51 is provided with the coil 52 therein. Therefore, the length L1 of the NFC coil 51 can be said to be the thickness of the NFC coil 51 (not the cross-sectional thickness but the thickness when viewed from the plane). On the other hand, L2 represents the distance of the region occupied by the coil 52 (i.e., the shape of the coil 52 may be donut-shaped and the inside may be hollow).

In the present invention, the length of L2 is at least two times longer than the length of L1. The reason is to maximize the reception of wireless power energy.

Further, it is preferable that the distance between the coil 52 and the NFC coil 51 (meaning a left-right distance in the drawing) is somewhat spaced apart. The spacing is about 1 - 10 mm, and the optimum is about 5 mm.

18 is a view of another embodiment. That is, when the portable terminal is as small as 5 inches or less, it is general that the coil 52 is provided inside the NFC coil 51 as shown in (A). However, 52 may be provided outside the NFC coil 51.

- Example 6-

19 and 20 are views showing an embodiment in which a battery may be further provided on a bottom plate.

19, a coil 51 is provided at the upper end of the outer bottom plate 103a, and a battery 63 is further provided thereon. At this time, a parite sheet 63 is further provided between the battery 62 and the coil 51 so as to be insulated. For this purpose, an inner bottom plate 103b is provided. At this time, it is preferable that the outer bottom plate is formed thicker than the inner bottom plate, but the present invention is not limited thereto.

In the present invention, it is preferable that the thickness of the bottom plate is less than 5 mm and the optimal thickness is less than 3 mm in the state where the battery is not provided and only the coil is provided. It is preferable that the thickness is within 7 mm and the optimum thickness is within 5 mm.

20 shows a block diagram in the case where a battery is provided and is provided between the DC / DC converter 12 and the USB terminal 112, to which a battery charging (charging) function (charging IC) The battery power is supplied to the portable terminal 150 via the USB terminal 112. The battery power is supplied to the portable terminal 150 through the USB terminal 112. [

13: NFC module 51: NFC coil
52; Receiver coil 61; Mobile phone connector
62a, 62b: power connection terminal
200; Receiving unit 300:
31: transmitting coil 100: case
110: module part 110a: circuit part part
100a: coil part 104, 111: connection terminal
104a, b: connection terminal 111a, b: connection terminal
112: USB terminal 112a: separate USB terminal

Claims (9)

And a + electrode connection terminal electrically connected to both terminals of the wireless power receiving coil and exposed to the outer surface, the wireless power receiving coil being installed inside the wireless power receiving coil, A case that provides the ability to; And
And a module component part having a USB terminal coupled to a USB terminal of the portable terminal and a + electrode connection terminal electrically connected to a + electrode connection terminal provided on an outer surface of the portable terminal case,
Wherein the module component rectifies the wireless power energy received from the wireless power receiving coil and provides the wireless power energy to the USB terminal of the portable terminal,
Wherein the module part is provided in a separate structure detachably attachable to the case.
The method according to claim 1,
Wherein the wireless power receiving coil further comprises an NFC coil provided on the case bottom plate and formed outside the area occupied by the wireless power receiving coil in the case bottom plate. Case for terminal.
delete 3. The method of claim 2,
Wherein a signal from the wireless power receiving coil and a signal from the NFC coil are connected to the wireless terminal through a USB terminal provided in the case. delete delete delete delete delete

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