KR20130018506A - The wireless charger with the communications equipment - Google Patents

Abstract

PURPOSE: A wireless charging device with a communicating function is provided to implement a slim design by mounting a wireless charging circuit in a portable device. CONSTITUTION: A wireless charge receiving part(95) is mounted in a battery of a portable device. The wireless charge receiving part communicates with the portable device. When wirelessly charging while simultaneously charging by TA or USB, the wireless charging continues. The TA or USB charging stops, when charging by the portable device. The portable device communicates with the wireless charge receiving part and indicates the full charge time. [Reference numerals] (62c) Sensor

Description

The wireless charger with the Communications equipment

The present invention relates to a wireless charger, and provides a wireless charger that is capable of communicating even during data charging by charging a wireless charger, and more particularly, when the mobile device is built-in and charged with a wireless charging device in a portable device. The present invention relates to a wireless charging device that communicates between a wireless charging receiver and a portable device configured to communicate with a portable device when a battery is embedded in a battery and a battery is detached and charged with the battery.

In the electronic device, a wireless transmission and reception unit is provided with a situation in which a wireless charging technology is being developed. Recently, mobile communication terminals have been developed in various forms, and accordingly, there were various charging jacks as well as various types of power chargers. However, these charging jacks have been standardized as a 24-pin charging jack to solve the compatibility problem between the chargers to the users.

In general, portable devices are charged by connecting a power adapter (POWER ADAPTER) having a wire for charging a battery, and a method of contactless charging is currently introduced and introduced. In addition, the wireless charger is using a wireless power receiver coil by using an external case outside the portable device. If you look at the wiring that is being charged, a separate external case is used on the outside, and the wireless charging receiver is mounted on a separate external device, and the wirelessly transmitted power is connected to the connector terminal that is connected when charging with the wired power adapter TA. There is a charging method, and another wiring method is a charging method by connecting a USB charging terminal.

However, this is still a considerable hassle and inconvenience to the users due to the limitation of the distance because the charging is performed through the cable between the charger and the device. In addition, when a plurality of terminals are charged with a single charger, there is a problem that the terminal may be damaged due to troubles due to manual attachment and detachment of the charger and the terminal jack, and wear and tear of the connection portion.

However, the connection terminal method as described above is different from the standard and shape of the terminal according to the device, the user has a difficulty in purchasing a new charging device every time, this method is to discard the conventional charger when purchasing a new device New problems arise.

In order to solve this problem, a non-contact magnetic induction method, that is, a wireless charging method has been devised. In the non-contact charging method, a primary circuit that operates at a high frequency is formed in a charging matrix, and a secondary circuit is configured in a battery side, that is, in a portable electronic device or a battery, Of the battery. Contactless charging with inductive coupling is already used in some applications (eg electric toothbrushes, electric shavers, etc.).

However, when it is applied to a portable electronic device such as a mobile phone, a portable MP3 player, a CD player, an MD player, a cassette tape player, a notebook computer, and a PDA, in addition to a requirement that the volume and weight added to the battery are small, The variation of the charging efficiency depending on the position where the electronic device or the battery is placed should be improved.

In addition, when applied to a mobile phone or a smartphone, there are some methods of releasing the wireless charger according to the predetermined method, as well as improving the deviation. Thus, the wireless charger is also not able to be charged if the method is different.

Further, no two or more coils are provided, the design specification between the coils is not specified, and the exact structure in which each coil is located in the terminal is not described.

That is, the prior art 1 (Republic of Korea Patent No. 10-0928439) is provided to be located between the first upper core (coil) and the second upper core, the control unit is a signal transmitted from a contactless power receiver, the bottom core, The first upper core and the second upper core to determine which core is received, and in response to the determination result characterized in that the transmission and control of the power signal through the core, but the structure to enable data communication during wireless charging Do not present.

In addition, the prior art 2 (Republic of Korea Patent Registration 10-0928439) is the induction pattern core of the primary side core portion is provided with a bottom core layer consisting of a plurality of cores to the top of the PCB base, a plurality of the top of the gap panel on the bottom core layer An upper core layer serving as a core is provided, and the lower core layer and the upper core layer are positioned to cross each other and are provided in a plural form, but the data communication function is not specifically presented.

In addition, Prior Art 3 (Korean Patent No. 10-1001262) discloses a cradle in which a portable terminal is detachably seated; And a charging module provided in the holder so that the magnetic field generated from the power supplied from the outside is transferred to the portable terminal by electromagnetic induction when the portable terminal is seated on the holder. It provides a case, but likewise does not specifically present the data communication function.

Therefore, there is a need for the development of a wireless charging method capable of data communication during charging.

Prior Art 1: Republic of Korea Patent Registration 10-0928439. Registration date: November 18, 2009 Prior Art 2: Republic of Korea Patent Registration 10-0971714. Posted on July 15, 2010 Prior Art 3: Republic of Korea Patent Publication 10-2011-0040622, Publication Date: April 20, 2010

The problem to be solved by the present invention, to solve the problem of the external mounting is to be mounted on the battery, the battery is removable and mounted in a mobile device with the battery to maintain the convenience and slim portability of the portable It is to provide a wireless charging device for communicating between a wireless charging receiver and a portable device. When mounted in such a portable device, when charging with the external wired TA (POWER ADAPTOR) at the same time, the wireless charging voltage and the voltage supplied by the wired TA collide with each other in the battery, and a high voltage flows in the reverse direction. The present invention provides a wireless charging device that communicates between a wireless charging receiver and a portable device to solve a problem such as damage to a circuit of a portable device.

In addition, the consumer can install the wireless charger circuit in the portable mobile device to maintain the convenience of portable, and USB data download can be performed by using the connection of the portable device to perform USB data communication because the wireless charger receiving circuit is mounted in the mobile device. It is to provide a wireless charging device for communicating between a wireless charging receiver and a portable device. The wireless reception circuit is mounted on the battery, and the battery is charged through the battery terminal, and at the same time, when the wired charging is performed, the battery terminal is also charged through the TA. In this case, in order to prevent the charging voltage from colliding with each other when charging with wireless charging and wired charging TA at the same time, it has a function of cutting any one circuit through communication with the mobile device and the wireless charging receiver. It was also equipped with a function to simultaneously match the full charge display.

The purpose of the present invention is to provide a wireless charging by wirelessly transferring power to wirelessly communicate with a wireless charging receiver and a portable device, which is embedded in a battery of the portable device and communicates with the portable device. Or, if you charge by USB, wireless charging is continued by charging, and the TA or USB charging by the portable device is solved by stopping.

When charging with TA or USB at the same time as wireless charging, the wireless charging is stopped, and the TA or USB charging by the portable device is continuously charged.

In addition, the portable device is a method of displaying a full charge and communicating with a portable device and a wireless charging receiver to transmit the full charge state to the portable device of the wireless charging unit to display the point of full charge and to display the full charge. Communicates with the wireless charging receiver to transmit the full charge status to the wireless charging unit microcomputer to indicate the time of full charge status.

At this time, it is characterized in that the communication using the one terminal or two terminals as a passage for communicating with the portable device and the wireless charging receiver, periodically applying a voltage applied to the primary coil, and then interrupts In order to do this, while the microcomputer periodically applies a frequency to the power delivery frequency oscillator to perform this, the current sensing unit detects the charging of the mobile device and applies a voltage to the primary side to maintain the charge. It is configured to communicate by using the near field communication antenna terminal in common, so that one near field antenna or two near field communication terminals are used.

In addition, it is configured to communicate by using a near field communication antenna terminal in common with a battery, and use the resistors N1 and N2 configured to prevent the communication signal from becoming small due to the low input impedance (50 ohms) of the near field antenna. It is configured by using amplifiers (N3, N4) to amplify received and lowered communication signals when receiving. It is also possible to simultaneously charge via TA or USB using wireless diode (D1) configured for protection of wireless charging receiver circuit. Protect the wireless charging circuit against voltage,

On the other hand, the above object is provided with a wireless charger for transmitting and receiving power wirelessly, the wireless charging receiver for receiving power energy through the wireless charger is provided with a communication function, characterized in that the mobile terminal is provided In the wireless charger, the wireless charger is provided with a short-range communication module, it is possible to communicate data with the portable terminal through the short-range communication module, the wireless charger is connected to a computer via a wired or USB terminal, The data is transmitted through the short range communication module of the wireless charger, and again by wire through a computer, or the data of the computer is transmitted to the wireless charger via a wired or USB terminal, and again via the communication module of the wireless charger. Is achieved by sending

According to the present invention, since the wireless charger circuit is built into the portable device, the convenience of portability is provided by the slim design, and the convenience of carrying out the download through the existing USB terminal without removing the external case in which the wireless charging circuit is built is provided. There is an effect that can be provided.

1 is a diagram illustrating a communication flowchart between a portable device and a wireless charger that perform wireless charging first and stop charging a wired TA when charging with wireless charging and wired TA simultaneously according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a communication flowchart between a portable device and a wireless charger that preferentially perform wired TA charging and stop wireless charging when simultaneously charging with wireless charging and wired TA according to an embodiment of the present invention.
3 is a diagram schematically illustrating a communication configuration between a portable device and a wireless charger using one line according to an embodiment of the present invention.
4 is a diagram schematically illustrating a communication configuration between a portable device and a wireless charger using two lines according to an embodiment of the present invention.
FIG. 5 is a diagram schematically illustrating a communication configuration between a short range communication antenna and a portable device using a connection terminal when using one end of a short range communication antenna according to an exemplary embodiment of the present invention.
6 is a communication configuration diagram of a portable period using an antenna connection terminal for near field communication when using two stages of near field communication antennas according to an exemplary embodiment of the present invention.
7 is a diagram schematically illustrating a configuration in which a wireless charging receiver circuit is mounted in a battery according to an embodiment of the present invention.
8 is a view showing an embodiment of a wireless charger to which the communication function is applied,
9 and 10 are views of an embodiment showing a wireless charging transceiver,
11 is a view showing in more detail an embodiment of a wireless charger to which the communication function is applied,
12 is a diagram of another embodiment of the present invention.

Hereinafter, a design structure of a wireless charger transmitting / receiving unit according to an embodiment of the present invention will be described in detail.

The present invention will now be described in detail with reference to the accompanying drawings. Hereinafter, a repeated description, a known function that may obscure the gist of the present invention, and a detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

1 is a diagram illustrating a communication flowchart between a portable device and a wireless charger that perform wireless charging first and stop charging a wired TA in the case of simultaneously charging wireless charging and wired TA according to an embodiment of the present invention.

As shown in FIG. 1, when the wireless charging and the wired TA charging are performed at the same time, the charging voltage of the wireless charger is reversed to the portable device to prevent damage to the circuit. off to prevent damage to circuits of mobile devices. On the other hand, the charging voltage of the mobile device may be applied to the wireless charging receiver due to the high charging voltage at the same time, but the D1 diode blocks the reverse voltage in FIG. 8 to protect the receiver of the wireless charger.

In addition, as shown in Figure 1, the full charge signal also communicates with each other the result of the full charge state to each other to match the time of full charge between the mobile device and the wireless charging receiver. At the time of full charge, the battery voltage rises very slowly and the amount of change is so small that it is precisely timed that there is a difference between the time of full charge at the fuel gauge battery capacity detector 5 of the mobile device and the time of full charge at the wireless charging receiver. Can be matched with

FIG. 2 is a diagram illustrating a communication flowchart between a portable device and a wireless charger that preferentially perform wired TA charging and stop wireless charging when simultaneously charging with wireless charging and wired TA according to an embodiment of the present invention.

As shown in FIG. 2, when the full charge is recognized, it indicates that the battery is fully charged when the battery voltage is 4.2 V +/- 0.05 V or when the battery voltage is 4.0 V or more and the charging current is 150 mA or less.

3 is a diagram schematically illustrating a communication configuration between a portable device and a wireless charger using one line according to an embodiment of the present invention.

As shown in FIG. 3, the fuel gauge, that is, the battery capacity detector 5, transmits the value to the microcomputer in the portable device to display the remaining battery level. However, the data communication content is to send and receive information that the wireless charging signal and the battery full charging signal with the portable device.

4 is a diagram schematically illustrating a communication configuration between a portable device and a wireless charger using two lines according to an embodiment of the present invention.

As shown in FIG. 4, the fuel gauge, i.e., the battery capacity detector 5, transmits the value to the microcomputer in the portable device to display the remaining battery level. However, the data communication content is to send and receive information that the wireless charging signal and the battery full charging signal with the portable device.

FIG. 5 is a diagram schematically illustrating a communication configuration between a short range communication antenna and a portable device using a connection terminal when using one end of a short range communication antenna according to an exemplary embodiment of the present invention.

As shown in FIG. 5, this is a case where one end of a short range communication antenna is used, and recently, a communication activated short range communication circuit of a local area network is basically built in a cellular phone or the like. According to the present invention, when a battery power +,-terminal, and two near field antenna terminals are basically mounted on an existing battery, a near field antenna terminal (A or B terminal) is used without adding a terminal for communication with a mobile device. To communicate between mobile devices.

Here, an important design configuration is that the impedance of the near field communication antenna terminal is 50 ohms, so that the pulse square wave, which is a data communication signal, becomes smaller and the N1 (resistance) and N2 (resistance) are serially connected to prevent the impedance influence from being lowered. And amplifiers (N3, N4) to receive the smaller communication signals.

6 is a communication configuration diagram of a portable period using an antenna connection terminal for near field communication when using two stages of near field communication antennas according to an exemplary embodiment of the present invention.

As shown in FIG. 6, this is a case of using two stages of a short range communication antenna, and recently, there is a tendency that a communication activated short range communication circuit of a local area network is basically embedded in a cellular phone or the like. According to the present invention, when a battery power +,-terminal, and two near field antenna terminals are basically mounted on an existing battery, the present invention can be carried by using the near field antenna terminals A and B without adding a terminal for communication with a mobile device. Communication between devices was configured.

Here, an important design configuration is that the impedance of the near field communication antenna terminal is 50 ohms, so that the pulse square wave, which is a data communication signal, becomes smaller and the N1 (resistance) and N2 (resistance) are serially connected to prevent the impedance influence from being lowered. And amplifiers (N3, N4) were used to receive the smaller communication signals.

7 is a diagram schematically illustrating a configuration in which a wireless charging receiver circuit is mounted in a battery according to an embodiment of the present invention.

As illustrated in FIG. 7, the components included in the battery are battery power (Vbat +) terminals, (Vbat −) terminals, and A and B which are short-range communication antenna terminals. Here, the diode D1 is used to protect the wireless charging circuit against reverse voltage when the portable device is simultaneously performing external TA or USB charging and wireless charging.

As described above, an optimal embodiment has been disclosed in the drawings and specification. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not intended to limit the scope of the present invention as defined in the meaning or claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

8 is a diagram illustrating a configuration of a wireless charger to which a short range communication function is applied.

In order to receive the wireless power reception energy, the device to receive the charging energy on the top of the wireless charger 100 should be placed or placed in close proximity. In the present invention has shown an embodiment in which the wireless charging receiver is provided in the portable terminal 69 (mobile phone or smart phone, etc.).

The wireless charger 100 may be connected through a USB terminal of a PC such as a computer or a notebook computer, and wireless power energy is transmitted through the coil 31 provided in the wireless charger 100.

The wireless power energy is received through the wireless power energy receiver 95 provided in the mobile phone, and wireless power energy is also received through the coil 52 provided in the receiver 95.

On the other hand, in the present invention, the function of enabling data communication during wireless charging is further imposed. That is, the near field communication units 95a and 95b are imposed on the wireless charging transmitter 100 and the receiver 95 to enable data communication.

Accordingly, information (data) in the mobile terminal 69 is communicated with the wireless charger 100 through the short range communication units 95a and 95b, and the wireless charger 100 communicates with the computer 90 through the USB terminal. Will be done.

At this time, in the present invention, the Wi-Fi communication module is used as the short-range communication unit as an embodiment, but in addition to the Wi-Fi communication module, all modules capable of short-range communication can be used.

9 and 10 are views of an embodiment showing the wireless charger (transmitter) and the wireless charging receiver in detail.

Fig. 9 is a diagram showing a circuit configuration of a transmitter provided with a resonator (relay) 31a, and the function of each component is as follows.

Then, a DC or AC power source can be supplied to the transmitter 300 by a method of supplying normal power. However, in the embodiment of the present invention, a jack 68 is used. When the DC power is applied through the jack, the voltage is converted to receive the desired power through the converter 66.

Since the embodiment of the present invention uses the DC power supply, the DC / DC converter is used, but the rectifier function should be imposed when the AC power is supplied. And a protector 67 for preventing overvoltage is further provided to protect the device of the transmitter from the overvoltage.

On the other hand, an overcurrent protector 65 is further provided to protect the transmitter even in overcurrent, and an overtemperature protector 64 for protecting the transmitter even at high temperatures.

Then, the control unit 60 controls the short-range communication module 61 and also controls the resonance filter 62. In the present invention, 32 bits are used for the control unit 60, but the present invention is not limited to the 32 bits, and any conventional control unit can be used.

Meanwhile, in the present invention, a short range communication module for mutual data communication is used in the transmitting and receiving units 200 and 300, Zigbee is used as a short range communication module, and the chip antenna 16 is used to transmit and receive radio waves. Used. At this time, it is a matter of course that the short-range communication module and the antenna can be implemented by a usual method.

In the control unit 60 of the present invention, the amplifier 63 is used to transmit the radio power through the transmission loop coils 31 and 31 that oscillate the resonance filter 62 to transmit the electroless power. Here, the resonance filter is configured as a structure in which a coil 52 and a capacitor C are connected in series. To generate a frequency having energy so that the antenna loop coils 31 and 32 can transmit radio power energy.

Meanwhile, the antenna loop coils 31 and 32 for transmitting the wireless power energy are further connected to the transmitting unit 300 of the present invention, but the resonator 31a is completely separated from the transmitting unit in circuit. The resonators 31a and 52a amplify the radio power energy.

Fig. 10 is a block diagram showing a receiver provided with a resonator (repeater) 52a.

In general, the wireless charging system includes a transmitter for transmitting power energy and a receiver for receiving power energy. The transmitter periodically determines whether a sensor is driven and a charge request signal is detected to detect a predetermined signal. 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.

And, in the above description, Zigbee 11, which is a communication module that transmits and receives mutual signals from a transceiver, a controller 10 for controlling each signal and component by a predetermined program, and a final cell phone 69 with voltage or power. Converter 12 is provided to match the battery voltage, such as). At this time, the converter 12 may function to increase or decrease the voltage depending on the situation and likewise increase or decrease the amount of power.

A matching part 15 is provided to transmit the received radio power energy to the control part.

Meanwhile, an antenna loop coil 52 capable of receiving wireless power energy is provided, and the antenna loop coil 52 is connected in circuit with the devices of the receiving unit 200 of the present invention.

However, the resonator 52a is rotationally separated from the circuit portion of the present invention. The circuit structure of the resonator 52a of the receiving section is similar to that of the resonator circuit of the transmitting section. The resonator 52a of the receiving part 200 is similar to the receiving part coil 52 and the resonator 31a of the transmitting part 300 is similar to the transmitting part coil 31 in terms of the shape and size of the coil.

However, the resonator can be of various forms and can be of any type, including structures such as capacitively-loaded conducting-wire loops, dielectric spheres, metal spheres, metal dielectrics, plasmons, polarities, conductive-wire loops, Can be included.

The present invention is characterized in that only one of the transmitting unit 300 and the receiving unit 200 is installed in the present invention. Accordingly, since only one portion of the resonator is provided with the resonators 31a and 52a, it is possible to secure the efficiency reduction caused by the program control according to the local communication module.

That is, when receiving the voltage and current amount received by the coil of the receiver 200 through the matching part 15, the communication part 13 grasps the magnitude of the current and voltage and sends it to the controller 10.

Then, if the desired amount of current or voltage is not sufficiently received or is received too much according to a predetermined algorithm, the control unit of the transmitting unit 200 transmits the difference value through the short distance communication module 11.

On the other hand, the short-range communication module 61 (16) of the transmitter 300 receives the signal sent from the receiver and sends it to the control unit, the control unit sends a signal to the amplifier 62 to increase or decrease the voltage or current amount and the resonance filter ( 62 generates a wireless power energy signal corresponding to the new command value of the controller, and the antenna loop coils 31 and 32 transmit the newly generated wireless power energy.

That is, when only one resonator is provided through one transmitter and a receiver, power energy received by the receiver is determined, and when a value to be further corrected by the controller of the receiver is sent to the transmitter through the local communication module, The resonance filter 62 generates the electric energy corresponding thereto.

11 is a view showing an embodiment of the system configuration of the wireless charging and data communication process in detail.

The functions of the central processing unit (MCU) 60, the amplifier (AMP), the DC / DC converter, and the like are similar to those of the embodiment of FIG. 9, and the wireless charging state is detected by detecting the state of the coil through the function of the sensor 62c. You can control it. In addition, the control unit 60 also controls the local area network (95a), so that the data transmitted and received through the local area network is connected to the computer 90 through the USB.

On the other hand, the function of the receiver provided in the portable terminal 69 is the same as that described in the embodiment of FIG.

11 is a view showing another embodiment of the present invention,

When the computer is a notebook, the wireless charger coil 52 is provided in the space where the keyboard is not provided, and the portable terminal 69 is placed directly on the notebook body, so that the charger is possible.

52; Receiver (secondary) coil 31: Transmitter (primary) coil
90: PC 60: MCU
95a: communication module 95b: communication module
95: receiver 69; Handheld terminal

Claims (9)

A wireless charger that wirelessly transfers power to perform wireless charging, wherein the wireless charging receiver and the portable device communicate with the portable device by being embedded in a battery of the portable device, and simultaneously charging with TA or USB at the same time as the wireless charging. If so, the wireless charging continues to charge, the wireless charger with a communication function, characterized in that to stop the TA or USB charging the portable device charging. The wireless charger with a communication function of claim 1, wherein when charging with TA or USB at the same time as the wireless charging, the wireless charging is stopped and the TA or USB charging by the portable device is continuously charged. The communication function of claim 1, wherein the communication function is configured to communicate with the portable device and the wireless charge receiving unit to display the full charge, and to transmit the full charge state to the portable device by the microcomputer of the wireless charge unit to display the point of full charge state. Wireless charger equipped. The method of claim 1, wherein the method of displaying a full charge is to communicate with the portable device and the wireless charging receiver to transmit the full charge state to the wireless charging unit microcomputer to display the time point of the full charge state. Wireless charger with communication function. According to claim 3, characterized in that the communication using the one terminal or two terminals as a passage for communicating with the portable device and the wireless charging receiver, periodically applying a voltage applied to the primary coil To stop and interrupt, and to perform this while the microcomputer periodically applies a frequency to the power delivery frequency oscillator, the current sensing unit senses charging of the mobile device and applies a voltage to the primary side to maintain charging. Wireless charger with a communication function. The communication function according to claim 1, wherein the short range communication antenna terminal is used in common to communicate with the battery. The short distance communication antenna terminal is used or the short distance communication terminal is used for communication. Wireless charger. The method according to claim 1, wherein the battery is configured to communicate using a short-range communication antenna terminal in common, and is configured to prevent a communication signal from becoming small due to a low input impedance (50 ohm) of the short-range communication antenna. N2) Wireless charger with a communication function, characterized in that using the amplifier (N3, N4) as a way to amplify the received and lowered communication signal when used. The method of claim 1, wherein the diode (D1) configured for the protection of the wireless charging receiver circuit using a communication function, characterized in that to protect the wireless charging circuit against reverse voltage during simultaneous wireless charging and charging via TA or USB. Wireless charger. In the wireless charger provided with a communication function, characterized in that the wireless charger for transmitting and receiving power wirelessly is provided separately, the wireless charging receiver for receiving power energy through the wireless charger is provided in the portable terminal,
A short range communication module is provided in the wireless charger, and data communication with the portable terminal is possible through the short range communication module.
When the wireless charger is connected to the computer through a wired or USB terminal, the data of the portable terminal is transmitted through the short-range communication module of the wireless charger, and again transmitted by wire through the computer,
Or, the wireless charger with a communication function, characterized in that the data of the computer is transmitted to the wireless charger via a wired or USB terminal, and again to the portable terminal through a communication module of the wireless charger.

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