KR101050538B1 - Wireless power charging system and its charging method - Google Patents

Abstract

A wireless power charging system and a charging method thereof are provided. A power supply device of a wireless power charging system, wherein, when a power consumption device and a power supply device maintain a distance within a threshold value range, the power supply device may be configured to receive from the power consumption device through wireless communication established between the power consumption device and the power supply device. Signal transmitting and receiving unit for receiving the charge request signal and the unique identifier information, a power supply information storage unit for storing information on the amount of power supplied for each power consumption device in association with the unique identifier, identifying the power consumption device based on the unique identifier And a power supply control unit for storing information on the amount of power transmitted to the power consumption device in accordance with the charge request signal, and a power transmission unit for wirelessly transmitting power to the power consumption device. The power supply controller is the number of power of the power consumption device When receiving a power receiving standby signal indicating that the preparation thereby transmits power to the driven parts of the power transfer.

Wireless power charging, identifier information

Description

Wireless power charging system and its charging method {WIRELESS CHARGING SYSTEM AND CHARGING METHOD THEREOF}

The present invention relates to a wireless power charging system and a charging method thereof, and more particularly, to a wireless power charging system having a power supply device for supplying power to a power consuming device and a charging method thereof.

A wide variety of electrical and widespread products are on the market. In recent years, the spread of portable electronic devices is remarkable. As a kind of portable electronic device, a mobile phone and a digital video camera have a battery which is a charging means as a power source for driving.

In addition to portable electronic devices, there are other types of electronic devices having batteries, such as bicycles and automobiles (including electric vehicles, two or four wheels).

As described above, the portable electronic device and the moving means which are driven by using the battery may be turned off because the battery is discharged. In this case, in the case of a portable electronic device, the battery is charged through an AC adapter through a household AC power supply or a battery is sold through a commercially available disposable battery. However, the charging of a portable electronic device is inconvenient for the user since it is necessary to carry an AC adapter or a disposable battery which is a power supply means when moving outdoors.

In the case of a vehicle, the battery is charged by the combustion engine. However, moving the combustion engine requires ignition of the spark plug by the power charged in the battery. Therefore, the spark plug cannot be ignited when the battery is exhausted due to not using the vehicle for a certain period of time, and in order to start the combustion period, it is necessary to supply power directly from the outside of the vehicle using a cable. There was a problem of safety and convenience.

Therefore, in charging the discharged battery of the portable electronic device and the mobile device, the wireless electronic device and the mobile device to charge the battery of the portable electronic device and the mobile device without having to carry a power supply such as an AC adapter or a battery There is an urgent need for a power charging system and its charging method.

An embodiment of the present invention provides a wireless power charging system and a charging method thereof capable of supplying power to a corresponding power consuming device by identifying the unique identifier information when a power supply signal is requested from a power consuming device having unique identifier information. .

According to an embodiment of the present invention, when a power supply signal is requested from a power consuming device for which unique identifier information is set, the position of the power consuming device may be tracked, and the power supply may be moved to the tracked position to supply power to the power consuming device. It provides a wireless power charging system and a charging method thereof.

As a technical means for achieving the above-described technical problem, the first aspect of the present invention is a power supply device, when the power consumption device and the power supply device maintain a distance within a threshold range, the power consumption device and the power Signal supply and reception unit for receiving the charge request signal and the unique identifier information from the power consumption device through the wireless communication set between the power supply, power supply information that stores information on the amount of power supplied for each power consumption device in association with the unique identifier A storage unit, a power supply controller for identifying a power consumption device based on the unique identifier, and storing information on the amount of power transmitted to the power consumption device according to the charge request signal to the power supply information storage unit; Includes a power transmitter for transmitting power to the power consumption device, phase The power supply controller may provide a power supply device for driving the power transmitter to transmit power when receiving a power reception wait signal indicating that the power consumption device is ready for power reception.

In addition, a second aspect of the present invention provides a power consumption device, comprising: a power storage unit for storing power to be supplied to the power consumption device, a power charging controller for generating a charge request signal according to a power storage state of the power storage unit, and the power When the consumer device and the power supply maintain a distance within a threshold range, establishing a wireless communication between the power consumer and the power supply device, and transmits the charge request signal and the unique identifier information to the power supply device. And a power receiver for transmitting power wirelessly received from the signal transceiver and the power supply to a power storage, wherein the power charging controller drives the power receiver when receiving a power supply signal from the power supply, The power reception wait signal indicating that power reception is ready; Class it is possible to provide a power transmission apparatus for the device.

According to a third aspect of the present invention, there is provided a wireless power charging method comprising the steps of: (a) receiving a unique identifier and a power charging request signal from a power consuming device; Identifying, (c) if the power consumption device is identified, determining a power supply amount based on the power charge request signal, and (d) if the power supply amount is determined, transmitting a power supply signal to the power consumption device. (E) wirelessly transmitting power when a power reception standby signal is received from the power consuming device indicating that power reception is ready in response to the power supply signal; and (f) the unique amount of the transmitted power. It may provide a wireless power charging method comprising the step of storing in association with the identifier.

According to one of the above-described problem solving means of the present invention, when a power supply signal is requested from a power consuming device in which unique identifier information is set, the unique identifier information may be identified to supply power to the corresponding power consuming device. Accordingly, the wireless power charging system according to the present invention can charge a battery without having to carry a power supply device such as an AC adapter or a battery, which is a power supply device of a power consuming device.

In addition, according to the problem solving means of the present invention, when a power supply signal is requested from a power consumption device with unique identifier information, the location of the power consumption device is tracked, and the power supply device is moved to the tracked location to the corresponding power consumption device. Can supply power Therefore, the wireless power charging system according to the present invention may move the power supply to the power consumption device to charge the battery even when the power consumption device is in a position where the power is not supplied.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" with another element in between. . In addition, when a part is said to "include" a certain component, which means that it may further include other components, except to exclude other components unless otherwise stated.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a wireless power charging system according to a first embodiment of the present invention.

As shown in FIG. 1, a wireless power charging system according to an embodiment of the present invention includes a power consumption device 110 and a power supply device 150.

The power consumption device 110 has unique identifier information and transmits the unique identifier information to the power supply device 150 to request power according to the state of charge of the battery. In this case, the power consumption device 110 may be a moving means or a portable electronic device. The vehicle may be, for example, a bicycle or an electric vehicle driven by electric power, and the portable electronic device may be, for example, a mobile phone or a digital video camera.

The power consumption device 110 includes a power storage unit 114, a power charging control unit 116, a signal transceiver 118, and a power receiver 124.

The power storage unit 114 stores the power received from the power supply device 150, and the remaining power amounts used by the power consuming unit 112 may be stored at predetermined intervals. In this case, the set period is not limited, but a period in which the user can know how much remaining power is left.

The power charging control unit 116 generates a charge request signal to the power supply device 150 according to the power state stored in the power storage unit 114. In detail, the power charging control unit 116 compares the amount of remaining power stored in the power storage unit 114 with a preset reference value. As a result of the comparison, if the amount of remaining power is less than or equal to a predetermined reference value, the power charging control unit 116 drives the notification unit 126 to inform the user whether the power is charged.

The power charging control unit 116 determines whether the user inputs a signal for instructing power charging through the input unit 130, and based on the determination result, the unique identifier information of the power consuming device 110 from the unique identifier storage unit 120. Received may be transmitted to the signal transceiver 118.

In this case, the power charging control unit 116 of the present specification has said that the power supply device 150 requests power when a charging instruction of the user is input, but the discharge is imminent if the remaining power amount is less than a predetermined reference value even without the charging instruction of the user. The power charging control unit 116 may arbitrarily request power from the power supply device 150.

When the power supply signal from the power supply device 150 is received through the signal transmission / reception unit 118, the power charging control unit 116 drives the power reception driver 122 and outputs a power reception wait signal indicating that the power reception is ready. The signal transmission and reception unit 118 may transmit to the power supply device 150.

When the charge request signal is input from the power charge controller 116, the signal transceiver 118 transmits the input charge request signal and the unique identifier information to the power supply device 150. In this case, the charge request signal and the unique identifier information are transmitted when the power consumption device 110 and the power supply device 150 maintain a distance within a threshold range.

The signal transceiver 118 receives a power supply signal indicating that power transmission is ready from the power supply device 150 and transmits it to the power charging control unit 116.

The signal transceiver 118 transmits a power standby signal to the power supply device 150 informing that power reception is ready by the operation of the power charging control unit 116.

In addition, the signal transceiver 118 may receive a power supply signal indicating that power transmission is ready from the power supply device 150.

The power receiver 124 sends the power provided from the power supply device 150 to the power storage unit 114. In detail, the power receiver 124 may use a rectenna capable of receiving a radio frequency (RF), microwave, or millimeter wave from the power supply device 150 and converting the power into power. In general, a rectifier is a compound word of a rectifier and an antenna. The rectenna is a combination of an antenna and a rectifier, and converts a radio frequency wave, microwave, or millimeter wave.

Looking at the electrical structure of the rectenna, the structure is composed of an antenna (An), a diode (D), a rectifier circuit, a load (R) as shown in Figure 2, basically in the center of the dipole antenna (An) of 1/2 wavelength The rectifier diode is connected. When an RF wave, microwave or millimeter wave is irradiated to the dipole antenna, it electrically resonates and the center portion is doubled of the current. Adjust the diode position slightly to match the impedance of the antenna and diode. The power is used externally through the low pass filter. You can enumerate as many rectennas as you need to get the power you need.

When the power supply request signal is input from the power consuming device 110, the power supply device 150 identifies the unique identifier information of the power consuming device 110 and supplies power to the corresponding power consuming device 110.

The power supply device 150 includes a signal transceiver 152, a power supply controller 156, a power supply 158, and a power transmitter 160.

When the distance between the power consumption device 110 and the threshold range is maintained, the signal transceiver 152 receives the charge request signal and the unique identifier information from the signal transceiver 110 of the power consumption device 110 to be described later. The power supply controller 156 transmits the data.

The power supply controller 156 may determine the corresponding power consumption device 110 by comparing the unique identifier information received from the signal transceiver 152 with the information of the unique identifier stored in the power supply information storage unit 154. .

The power supply controller 156 may generate a power supply signal and transmit a power supply signal indicating whether power is supplied to the power consumption device 110.

The power supply control unit 156 drives the power supply unit 158 to supply power to the power consumption device 110, and the power to be described later so that the power generated from the power supply unit 158 is transmitted to the power consumption device 110. The transmission unit 160 is driven.

When the power supply wait signal indicating that the power supply reception is ready is received from the power consumption device 110, the power supply control unit 156 drives the power transmission unit 160 to power the reception unit 124 of the power consumption device 110. To transmit power.

The power supply unit 158 supplies power to the power transmission unit 160 to be provided to the power consuming device 110. In this case, the power supply unit 158 may receive power from the outside and transmit the power, or generate power by itself to supply power.

The power transmitter 160 may transmit power supplied from the power supply unit 158 to the power consumption device 110 by driving the power supply control unit 156. In this case, the power transmitter 160 may transmit power using any one of radio frequency waves, microwaves, and millimeter waves. When power is supplied using a radio frequency wave, it is preferable to use a radio frequency wave of a low frequency of 1-20GHz rather than a radio frequency wave of a high frequency. The use of low frequency radio frequency waves is caused by noise being affected by frequencies around 1-300 MHz and 20 to 60 GHz due to the noise characteristics in the air.

As described above, the wireless power charging system according to the present invention includes a power consumption device 110 in which unique identifier information is set and a power supply device 150 for identifying and supplying unique identifier information to supply power. The battery can easily be charged without the need for a power supply such as an AC adapter or a battery.

Hereinafter, an example of a charging method of the wireless power charging system according to an embodiment of the present invention will be described with reference to FIG. 3.

First, the power consumption device 110 and the power supply device 150 of the wireless power charging system establish wireless communication with each other (S300). More specifically, when the power consumption device 110 and the power supply device 150 maintain a distance within the threshold range, wireless communication is established between the power consumption device 110 and the power supply device 150. In this case, the wireless communication may use, for example, wireless communication including radio frequency identification (RFID) or infrared rays.

Next, the power consumption device 110 generates a charge request signal to the power supply device 150 to request power (S310). More specifically, the power consumption device 110 checks the power storage state at regular intervals, and transmits the unique identifier information and the charge request signal to the power supply device 150 when the power storage state is less than or equal to a preset reference value.

Next, the power supply device 150 checks the power consuming device 110 based on the unique identifier information transmitted from the power consuming device 110 (S312). More specifically, when the unique identifier information and the charge request signal are transmitted from the power consumption device 110, the power supply device 150 may be connected to the unique identifier through the power supply information storage unit 154. Check it.

Next, the power supply device 150 generates a power supply signal indicating that power supply is possible to the power consumption device 110 whose unique identifier is confirmed, and transmits the generated power supply signal to the power consumption device 110. (S314).

Next, when a power supply signal is input from the power supply device 150, the power charging control unit 116 of the power consuming device 110 generates a power reception standby signal indicating that power can be received and the power reception unit 122. Drive (S316). The power consumption device 110 transmits the reception standby signal generated by the power receiver 122 to the signal transceiver 152 of the power supply device 150 through the signal transceiver 118 of the power receiver.

Next, when the power reception wait signal is transmitted, the power supply control unit 156 of the power supply device 150 drives the power supply unit 158 to supply power to the power consumption device 110 (S318). In addition, the power supply controller 156 drives the power transmitter 160 to transmit power to the power supply information storage unit 154 while simultaneously transmitting power to the power consuming device 110 through wireless transmission. Save it.

Next, when power is transmitted from the power supply device 150, the power charging control unit 116 of the power consuming device 110 stores the transmitted power in the power storage unit 114 and simultaneously notifies the power that the power is charged ( In step 126, the user is informed (S320).

As described above, the wireless power charging method according to the present invention includes a power consumption device in which unique identifier information is set, so that the battery can be charged without having to carry a power supply device such as an AC adapter or a battery, which is a power supply device of the power consumption device.

In addition, information on the amount of power supplied to each power consuming device may be stored and used in the billing process.

4 is a wireless power charging system according to a second embodiment of the present invention.

As shown in FIG. 4, the wireless power charging system according to the second embodiment of the present invention includes a power consuming device 410 and a power supply device 450.

The power consuming device 410 has unique identifier information, and transmits unique identifier information to the power supply device 450 to request power to charge the battery according to the state of charge of the battery. In this case, the power consuming device 410 is a moving means or a portable electronic device. The vehicle may be, for example, a bicycle or an electric vehicle driven by electric power, and the portable electronic device may be, for example, a mobile phone or a digital video camera.

The power consuming device 410 includes a power storage unit 414, a power charging control unit 416, a signal transmission and reception unit 418, a power receiver 424, and a payment rate storage unit 428. The power storage unit 414, the signal transmission / reception unit 418, and the power reception unit 424 of the power consumption device 410 according to the second embodiment may include the power storage unit 114 of the power consumption device according to the first embodiment, Since the components are the same as those of the signal transceiver 118 and the power receiver 124, description thereof will be omitted.

The payment fee storage unit 428 receives and stores the payment amount obtained by calculating the number of times of using the power supply device 450 and the usage fee from the power supply device 450, and transmits the received payment amount to the notification unit 426.

The power charging control unit 416 generates a communication request signal to the power supply device 450. More specifically, each of the power consuming device 410 and the power supply 450 has an environment in which wireless communication can be designed by maintaining a distance within a threshold value from each other. Therefore, when the power storage state is less than or equal to the set reference value, the power charging control unit 416 determines whether to maintain the distance within the threshold with the power supply device 450. If it is determined that the distance between each other exceeds the threshold, the power charging control unit 416 drives the notification unit 426 to notify the user. The power charging control unit 416 may transmit a communication request signal to the power supply device 450 when a signal for generating a communication request signal of the user is input through the input unit 430.

The power charging control unit 416 receives the charge payment request signal from the power supply device 450, checks the amount to be paid, and then, notifies the user through the notification unit 426, the payment rate storage unit 428. ).

When a signal indicating that the user pays a fee is input, the power charging control unit 416 may transmit a signal to the power supply device 450 to reset the requested fee.

The notification unit 426 informs the user of the payment amount through the power charging control unit 416 so that the user can confirm the payment amount such as being displayed on the display screen or transmitting the payment amount information to the user's mobile. It is a means to.

When the power supply request signal is input from the power consuming device 410, the power supply device 450 tracks the identification and location of the unique identifier information of the power consuming device 410 that made the power supply request, and then the corresponding power consuming device 410. To the power source. The power supply device 450 includes a signal transceiver 452, a power supply information storage unit 454, a power supply controller 456, and a power transmitter 456. The power supply information storage unit 454, the power transmitter 456, the power supply controller 456, the signal transceiver 452, and the power transmitter 456 of the power supply device 450 according to the second embodiment may be The same content as the configuration of the power supply device 150 described in the first embodiment or a part of the content is overlapped, and thus the overlapping content is omitted.

The power supply controller 456 receives the unique identifier information from the signal transceiver 418 of the power consumption device 410 and identifies the corresponding power consumption device 410 based on the received unique identifier information. The power supply control unit 456 includes a position determination unit 456a, a usage amount calculation unit 456b, and a usage fee settlement unit 456c.

When the communication request signal is input from the signal transmission / reception unit 452, the power supply control unit 456 drives the position detection unit 460 to detect the position of the power consumption device 410. At this time, the position determining unit 456a receives the position information of the power consuming device 410 from the position detecting unit 460 to determine the position of the power consuming device 410. The power supply controller 456 drives the power supply device 450 to move to the position of the power consumption device 410 determined by the position determiner 456a.

When the power supply controller 456 transmits power to the power consuming device 410 or moves to the power consuming device 410, the amount of power transmitted to the power consuming device 410 through the usage calculation unit 456b or The number of times of movement to the power consuming device 410 may be counted.

The power supply controller 456 is based on the amount of power transferred from the usage calculator 456b to the power consumption device 410 counted from the usage calculation unit 456c or the number of times of movement to the power consumption device 410. The usage fee may be settled and the settled fee may be charged to the power consumption device 410.

At this time, the date for calculating the fee is set in advance in the fee settlement unit 456c, and the fee is set based on the set settlement date. The date to be settled may be arbitrarily set by the user or may be a date set in advance on the ROM table.

As such, the wireless power charging system according to the present invention tracks the position of the power consuming device by the power consuming device with unique identifier information, moves the power supply to the tracked position, and supplies power to the power consuming device. In addition, even when the power consumption device is in a position where the power is not supplied, the power supply device may move to the power consumption device to charge the battery.

Hereinafter, an example of a charging method of the wireless power charging system according to the second embodiment of the present invention will be described with reference to FIG. 5.

Hereinafter, a charging method of a wireless power charging system according to a second embodiment of the present invention will be described with reference to FIG. 5.

The power consuming device 410 generates a communication request signal to the power supply device 450 (S500). More specifically, the power consuming device 410 has an environment in which wireless communication can be designed by maintaining a distance within the threshold from the power supply device 450. Accordingly, when the power storage state is less than or equal to the set reference value, the power consumption device 410 determines whether to maintain the distance within the threshold from the power supply device 450, and if the threshold value is exceeded, the power consumption device 410 drives the notification unit 426 to the user. Let them know. The power consumption device 410 transmits a communication request signal to the power supply device 450 when a user inputs a signal for generating a communication request signal through the input unit 430.

Next, the power supply device 450 having received the communication request signal drives the location sensor 460 to track the location of the power consuming device 410 that generated the communication request signal (S502), and determines the location determiner ( The location of the power consuming device 410 may be determined through the 456a to move to a location that maintains a distance within the threshold range with the power consuming device 410. At this time, the power supply device 450 stores the movement information in the power supply storage unit 454. The movement information may include, for example, the time, date, number of movements, etc. of the power supply device 450 moving to the power consumption device 410.

Next, if it is determined that the power supply 450 maintains a distance within the threshold range with the power consuming device 410 while moving to the tracked position, the power supply 450 is located between the power consuming device 410 and the power supply 450. Wireless communication is set (S510). In this case, the wireless communication may use, for example, wireless communication including radio frequency identification (RFID) or infrared rays.

Next, the power consumption device 410 generates a charging fairy signal to the power supply device 450 moved within the threshold range (S512). More specifically, the power consumption device 410 checks the power storage state at regular intervals, and transmits the unique identifier information and the charge request signal to the power supply device 450 when the power storage state is less than or equal to a preset reference value.

The power supply device 450 checks the power consuming device 410 based on the unique identifier information transmitted from the power consuming device 410 (S514). More specifically, when the unique identifier information and the charge request signal are transmitted from the power consuming device 410, the power supply device 450 identifies the unique identifier through the power supply information storage unit 454 to power associated with the unique identifier. Check the consumer device 410.

Next, the power supply device 450 generates a power supply signal indicating that power can be supplied to the identified power consumption device 410, and transmits the generated power supply signal to the power consumption device 410 (S516). .

Next, when a power supply signal is input from the power supply device 450, the power charging control unit 416 of the power consuming device 410 generates a power reception standby signal indicating that power can be received and the power reception unit 422. Drive (S518). The power consumption device 410 transmits the reception standby signal generated by the power receiver 422 to the signal transceiver 452 of the power supply device 450 through the signal transceiver 418.

Next, when the power reception wait signal is transmitted, the power supply control unit 456 of the power supply device 450 drives the power supply unit 458 to supply power to the power consumption device 410 (S520). When the power is generated, the power supply controller 456 drives the power transmitter 456 to transmit the generated power to the power consuming device 410 through wireless communication, and at the same time, transmits power. The power supply information storage unit 454 is stored (S522). In this case, the power supply information includes, for example, the amount of power supplied, the number of power supply, the power supply time, the power supply date, and the like.

Next, when power is transmitted from the power supply device 450, the power charging control unit 416 of the power consuming device 410 stores the transmitted power in the power storage unit 414 and simultaneously informs that the power is charged ( In operation S 524, the user is notified of the result.

Next, the power supply device 450 may count the amount of power transferred to the power consuming device 410 or the number of times of moving to the power consuming device 410 through the usage calculation unit 456b (S526). The power supply control unit 456 of the power supply device 450 transmits the amount of power or the power consumption device 410 transmitted from the usage calculation unit 456b to the counted power consumption device 410 through the usage fee settlement unit 456c. The usage fee may be charged to the power consuming device 410 based on the number of times of moving to.

At this time, the date for calculating the fee is set in advance in the fee settlement unit 456c, and the fee is set based on the set settlement date. The date to be settled may be arbitrarily set by the user or may be a date set in advance on the ROM table.

Next, when the fee payment request signal is transmitted, the power consumption device 410 notifies the user through the notification unit 430 at the same time and stores the charge in the power storage unit 414 (S528).

As such, the wireless power charging method according to the present invention tracks the location of the power consuming device by a plurality of power consuming devices having unique identifier information, moves the power supply to the tracked location, and supplies power to the power consuming device. Thus, even when the power consumption device is in a position where the power is not supplied, the power supply device may move to the power consumption device to charge the battery.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

1 is a block diagram illustrating a wireless power charging system according to a first embodiment of the present invention.

2 is a detailed block diagram illustrating a power receiver of a wireless power charging system according to a first embodiment of the present invention.

3 is a detailed flowchart illustrating a charging method of a wireless power charging system according to a first embodiment of the present invention.

4 is a block diagram illustrating a wireless power charging system according to a second embodiment of the present invention.

5 is a detailed flowchart illustrating a charging method of a wireless power charging system according to a second embodiment of the present invention.

* Explanation of symbols on the main parts of the drawings

110,410: power consumer 112,412: power consumer

114,414: power storage unit 116,416: power charging control unit

118, 152, 418, 512: signal transceiver 150, 450: power supply

154,454: power supply information storage unit 156,456: power supply control unit

158,458: power supply / power generator

Claims (13)

In the power supply, When the power consuming device and the power supply maintain a distance within a threshold range, a signal for receiving a charge request signal and unique identifier information from the power consuming device through wireless communication established between the power consuming device and the power supply. Transceiver, A power supply information storage unit for storing information on the amount of power supplied for each power consumption device in association with the unique identifier; A power supply controller for identifying a power consumption device based on the unique identifier and storing information on the amount of power transmitted to the power consumption device according to the charge request signal; Including a power transmission unit for wirelessly transmitting power to the power consumption device, The power supply controller drives the power transmitter to transmit power when receiving a power reception wait signal indicating that the power consumption of the power consumption device is ready. And the signal transmitting and receiving unit receives a communication request signal from the power consuming device when the distance between the power consuming device and the power supply does not satisfy a threshold range. delete The method of claim 1, The power supply is And a position sensor for tracking the position of the power consumption device based on the communication request signal. The method of claim 3, wherein The power supply device is a two or four wheel moving means, The power supply controller determines the position of the power consuming device through the position sensor, and controls the power supply to move to the position of the power consuming device. The method of claim 4, wherein The power supply control unit And a usage calculation unit for counting the amount of power transmitted or the number of times of movement to the power consumption device, and a charge settlement unit for calculating a usage fee based on the counted amount of transmitted power or the number of movements. The method of claim 1, The power transmitter is a power supply unit for transmitting power using any one of radio frequency waves, microwaves and millimeters. In the power consumption device, A power storage unit storing power to be supplied to the power consuming device; A power charging control unit generating a charging request signal according to a power storage state of the power storage unit; If the power consuming device and the power supply maintain a distance within a threshold range, establish wireless communication between the power consuming device and the power supply, and send the charge request signal and unique identifier information to the power supply. Signal transmitting and receiving unit for transmitting and Including a power receiving unit for transmitting the power wirelessly received from the power supply to the power storage unit, The power charging control unit drives the power receiving unit when receiving a power supply signal from the power supply device, and transmits a power reception standby signal indicating that power reception is ready to the power supply device. And the signal transceiver transmits a communication request signal to the power supply device when the distance between the power consumption device and the power supply device does not satisfy a threshold range. delete The method of claim 7, wherein The power consuming device is any one of an electronic device including a mobile and a moving means including a two- or four-wheeled vehicle. In the wireless power charging method, (a) determining whether to maintain a distance within a threshold range from the power consuming device, and performing communication setting with the power consuming device; (b) receiving a unique identifier and a power charge request signal from the power consuming device; (c) identifying a power consuming device based on the received unique identifier, (d) if the power consumption device is identified, determining a power supply amount based on the power charge request signal; (e) if the power supply amount is determined, transmitting a power supply signal to the power consuming device; (f) wirelessly transmitting power when a power reception wait signal is received from the power consuming device indicating that power reception is ready in response to the power supply signal; (g) storing the transmitted amount of power in association with the unique identifier Wireless power charging method comprising a. delete 11. The method of claim 10, In the step (a), the wireless power charging method establishes wireless communication with the power consuming device when maintaining the distance within the threshold range with the power consuming device. 11. The method of claim 10, If the step (a) does not maintain a distance within the threshold range with the power consuming device, the location of the power consuming device is moved to the power consuming device to perform the communication settings.

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