KR20140017769A - Method of providing guide information related to a wireless charging by a wireless power transfer system - Google Patents

Abstract

The present invention has an advantage capable of providing a wireless charging system (or wireless power transmission system) which effectively stably transmits and receives wireless power by providing guide information regarding the wireless charging to a user of multiple wireless power receivers through one among the multiple wireless power receivers (multiple receiving devices or multiple nodes). The multiple wireless power receivers exist on a communication zone and a charging zone. The communication zone and the charging zone are classified on a wireless power transmission device or a wireless power transmission network. For this, a guide information providing method according to an embodiment disclosed in the specification transmits and receives a packet including a variety of information for receiving the wireless power with the wireless power transmission device on a wireless power network based on magnetic field communication. The guide information providing method by a wireless power receiving device which charges power by receiving a wireless power signal produced from the wireless power transmission device comprises; a step of determining whether the magnetic field communication is normally executed with the wireless power transmission device or not; a step of receiving the wireless power signal from the wireless power transmission device if the magnetic field communication is normally executed; a step of determining whether the wireless power is normally charged based on the received wireless power signal or not; and a step of providing guide information regarding the wireless power charging if the wireless power is normally not charged. [Reference numerals] (AA) Start; (BB,EE) Yes; (CC,DD) No; (FF) End; (S110) Magnetic field communication is normally executed with a wireless power transmission device?; (S120) Wireless power signal is received from a wireless power transmission device.; (S130) Wireless power is normally charged based on the received wireless power transmission signal?; (S140) Guide information regarding wireless power charging is provided.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of providing guide information on wireless charging of a multi-node wireless power transmission system using magnetic field communication,

The present invention relates to a wireless power transmission network and a wireless power transmission method, and more particularly, to a wireless power transmission network for efficiently charging a plurality of devices using in-band communication and a wireless power transmission ≪ / RTI >

Wireless power transmission technology is a technology to transfer power between a power source and an electronic device without wires or contacts. It is expected to be utilized in various fields including home appliances, medical care, leisure, robots, automobiles and the like.

These wireless power transmission technologies are largely divided into an inductive coupling method and a resonant magnietic coupling method.

The magnetic induction method is a method of transferring energy by inducing a current from one coil to another through a magnetic field by using an electromagnetic induction principle. Recently, a non-contact charging system using a magnetic induction method has been developed It is used in electric toothbrushes and wireless shavers.

However, since the magnetic induction method is very sensitive to the distance between the two coils or the relative position thereof, the transfer efficiency is drastically deteriorated even if it is slightly distant or twisted. Therefore, the non-contact charging system using the magnetic induction method is limited to the fixed point It has constraints.

On the other hand, the magnetic resonance method is based on the principle that two resonant bodies having the same frequency exclude other non-resonant bodies around them and have a tendency to couple to each other. And it is attracting attention as next generation wireless power transmission technology.

Patent Document 1: U.S. Patent No. 7,741,735

An aspect of the present invention relates to a wireless power transmission network and a wireless power transmission system for efficiently charging a plurality of electronic devices, and a method of providing guide information related to wireless charging by the wireless power transmission system.

The problem to be solved by the present invention is not limited to the above-described problem, the objects that are not mentioned will be clearly understood by those skilled in the art from the present specification and the accompanying drawings. .

According to an aspect of the present invention, there is provided a guide information providing method for transmitting and receiving a packet including various information for receiving wireless power from a wireless power transmission apparatus on a wireless power network based on magnetic field communication, A method of providing guide information by a wireless power receiving apparatus that receives a wireless power signal generated from an apparatus and charges power, the method comprising: determining whether magnetic field communication is normally performed with the wireless power transmission apparatus; Receiving the wireless power signal from the wireless power transmission apparatus when the magnetic field communication is normally performed; Determining whether wireless power is normally charged based on the received wireless power signal; And providing guide information related to wireless power charging when the wireless power is not normally charged.

As an example related to the present specification, whether or not the magnetic field communication is normally performed may be determined by transmitting a packet containing the various information to the wireless power transmission apparatus and transmitting a response packet corresponding to the transmitted packet to the wireless power transmission apparatus Lt; RTI ID = 0.0 > normal < / RTI >

As an example related to the present specification, the guide information may include information on whether wireless power can be charged at a position where the wireless power receiving apparatus exists, information about whether the wireless power can be charged by entering the wireless power rechargeable region Information on a charging rate that can be generated when the wireless power is charged when entering the rechargeable area, information on a charging time expected when the wireless power is charged when entering the rechargeable area, And information on the state of the user.

In an exemplary embodiment of the present invention, the area where the wireless power network is formed includes a charging zone in which the magnetic field communication and wireless power charging are normally performed, and the magnetic field communication is normally performed. However, Transmitting a packet including information indicating that the wireless power receiving apparatus is present in the communication area to the wireless power transmission apparatus when the wireless power is not normally charged; As shown in FIG.

As an example related to the present specification, it may be determined whether or not the wireless power is fully charged when the wireless power is normally charged. And providing the guide information that the charged region may be out of the charged region if the buffer transition occurs.

According to an aspect of the present invention, there is provided a guide information providing method for transmitting and receiving a packet including various information for transmitting wireless power to at least one wireless power receiving apparatus on a wireless power network based on magnetic field communication, A method of providing guide information by a wireless power transmission apparatus that transmits wireless power by transmitting a wireless power signal to at least one wireless power receiving apparatus, the method comprising: determining whether magnetic field communication is normally performed with the at least one wireless power receiving apparatus ; Transmitting the wireless power signal to the at least one wireless power receiving apparatus when the magnetic field communication is not normally performed; Obtaining information on whether the wireless power is normally charged based on the received wireless power signal from the wireless power receiving apparatus; And providing guide information related to wireless power charging based on the acquired information on the normal charging state.

In one embodiment of the present invention, whether or not the magnetic field communication is normally performed includes transmitting a packet including the various information to the at least one wireless power receiving apparatus, and transmitting a response packet corresponding to the transmitted packet to the at least one Or may be determined by whether or not it is normally received from one or more wireless power receiving devices.

For example, the guide information may include, for each of the at least one or more wireless power receiving apparatuses, information on whether or not the wireless power can be recharged at the current position, information on whether the wireless power can be recharged Information on a charging rate that may occur when charging the wireless power, information on a charging time expected when the wireless power is charged when entering the charging area, And the information on the battery charging state of the wireless power receiving apparatus described above.

In an exemplary embodiment of the present invention, the area where the wireless power network is formed includes a charging zone in which the magnetic field communication and wireless power charging are normally performed, and the magnetic field communication is normally performed. However, And information on the obtained normal charging state may be information on which of the charging area and the communication area the at least one wireless power receiving apparatus is in .

In one embodiment of the present invention, the step of providing the guide information related to the wireless power charging based on the obtained information on the normal charging state includes the steps of: when the at least one wireless power receiving apparatus is in the charging area, Acquiring information on whether or not full charging is performed from at least one or more wireless power receiving apparatuses and providing guide information indicating that the wireless charging apparatus may be out of the charging region when fully charged, And providing guide information that the wireless power can be charged by entering the charging area.

According to the present invention, a plurality of wireless power receiving apparatuses (a plurality of receiving apparatuses or a plurality of nodes) existing on a communication zone and a charging zone, which are distinguished on a wireless power transmission apparatus or a wireless power transmission network, (Or wireless power) capable of transmitting and receiving wireless power more efficiently and stably (or wirelessly) by providing the user of the plurality of wireless power receiving apparatus with guide information related to wireless charging by at least one of Transmission system) can be provided.

The effects of the present invention are not limited to the above-mentioned effects, and the effects not mentioned can be clearly understood by those skilled in the art from the present specification and the accompanying drawings.

1 is a schematic diagram of a wireless power transmission network according to an embodiment of the present invention.
2 is a configuration diagram of the transmitting apparatus of FIG.
3 is a block diagram of the receiving apparatus of FIG.
4 is a block diagram of a wireless power transmission network according to an embodiment of the present invention.
5 is a configuration diagram of a super frame according to an embodiment of the present invention.
6 is a flowchart of a wireless power transmission method according to an embodiment of the present invention.
7 is a conceptual diagram illustrating an area on a wireless power network formed based on magnetic field communication in accordance with the embodiments disclosed herein.
8 is a flowchart illustrating a method of providing guide information by a wireless power receiving apparatus according to an embodiment disclosed herein.
9 is a diagram illustrating an example of a method of providing guide information by a wireless power receiving apparatus according to an embodiment disclosed herein.
10 is a flowchart illustrating a method of providing guide information by a wireless power transmission apparatus according to an embodiment disclosed herein.
11 is a diagram illustrating an example of a guide information providing method by a wireless power transmission apparatus according to an embodiment disclosed herein.

Hereinafter, a wireless power transmission system according to an embodiment of the present invention will be described.

A wireless power transmission system can transmit power wirelessly using a magnetic field and perform in-band communication using a magnetic field used for power transmission.

As a result, wireless power transmission systems can wirelessly power various devices without wires, such as wires or cables. In addition, the wireless power transmission system can supply power to a plurality of devices more efficiently by performing communication when power is supplied to a plurality of devices.

In a wireless power transmission system, power transmission can be performed by a magnetic resonance method. The magnetic resonance method is a wireless power transmission method in which a receiving end and a transmitting end are coupled to each other by a resonance of a magnetic field to transfer energy from a transmitting end to a receiving end. It can transmit energy to a relatively long distance There are advantages. In a wireless power transmission system, communication may be performed using a magnetic field of a frequency band used for power transmission.

1 is a configuration diagram of a wireless power transmission system according to an embodiment of the present invention.

Referring to FIG. 1, a wireless power transmission system may include a transmitting apparatus and a receiving apparatus. The transmitting apparatus supplies power, and the receiving apparatus receives power wirelessly from the transmitting apparatus. The receiving apparatus may be provided as one or more than one. The transmission of power can be performed according to a magnetic resonance method. Also, the transmitting apparatus and the receiving apparatus can exchange information with each other according to in-band communication using a magnetic field of a frequency band used for transmission of power.

The transmitting device may be provided in a fixed or mobile manner. Examples of the stationary type include a form installed in a ceiling of a room, a wall surface or a furniture such as a table, a form installed in an outdoor form at an outdoor bus stop or a subway station, and a form installed in a transportation means such as a vehicle or a train. The portable transmission device may be implemented as part of another electronic device such as a mobile device of movable weight or size or a cover of a notebook computer.

Examples of the receiving apparatus include various apparatuses including a battery such as a mobile communication terminal, a digital camera, a notebook computer, an electric vehicle, and the like, and home appliances driven by a power source supplied wirelessly instead of a power cable.

Hereinafter, a configuration of a transmitting apparatus and a receiving apparatus according to an embodiment of the present invention will be described.

2 is a configuration diagram of the transmitting apparatus of FIG.

Referring to FIG. 2, the transmitting apparatus may include a power conversion module, a first communication module, a first antenna, and a first control module.

The power conversion module can convert the AC power of the resonance frequency band between the transmitting device and the receiving device to the power supplied from the external power source. The first communication module may perform signal processing for performing in-band communication with the receiving apparatus according to a magnetic field communication protocol. The first antenna may transmit the power of the resonant frequency band converted by the power conversion module or the magnetic field signal processed by the first communication module or may receive the magnetic field signal from the receiving device by using the magnetic resonance method. Here, the first antenna may be implemented as a pair of magnetic coils. The first control module may control the components of the transmitting device.

3 is a block diagram of the receiving apparatus of FIG.

Referring to FIG. 3, the receiving apparatus may include a second communication module, a second antenna, a power management module, a battery, and a second control module.

The second communication module may perform signal processing for performing in-band communication with the transmitting apparatus according to the magnetic field communication protocol. The second antenna may receive a magnetic field signal that is a power from the transmitting device using a magnetic resonance method or may transmit a magnetic field signal processed by the second communication module. Here, the second antenna may be implemented as a pair of magnetic coils. The power management module manages the power supplied from the transmission device. For example, the power management module can convert supplied power into direct current and supply it to the battery. The battery can store the supplied power. The second control module may control the components of the receiving device.

On the other hand, a battery may be omitted in the receiving apparatus. In this case, the supplied power may be used to drive the receiving apparatus instead of charging the battery.

Hereinafter, a wireless power transmission network according to an embodiment of the present invention will be described.

A wireless power transfer network (WPTN) is a network that transmits power wirelessly using a magnetic field and performs in-band communication using a magnetic field used for power transmission. The wireless power transfer network . ≪ / RTI >

For example, in a wireless power transmission network, power transmission is performed using a magnetic wave having a low frequency band of about 30 to 300 KHz as an operating frequency band and a frequency of 128 KHz as an operating center frequency, Lt; / RTI > The modulation scheme can use binary phase shift keying (BPSK) or amplitude shift keying (ASK). The coding scheme may use Manchester coding or non-return-to-zero level coding (NZR-L). Such a wireless power transmission network can provide a data rate of several kbps up to several meters in distance.

On the other hand, the operating frequency band, the modulation scheme, and the coding scheme of the wireless power transmission network are not limited to the above examples.

4 is a block diagram of a wireless power transmission network according to an embodiment of the present invention.

Referring to FIG. 4, a wireless power transmission network may be formed by various devices. Each device forms a node of a wireless transmission network, which is divided into a wireless power transfer network base station (WPTN-B) node and a wireless power transfer network device (WPTN-D) node . Here, the base station node may correspond to the transmitting apparatus of the wireless power transmission system described above, and the terminal node may correspond to the receiving apparatus.

The base station can transmit power wirelessly to the terminal. The base station can also manage the wireless power transmission network. For example, the base station can manage the establishment and release of a wireless power transmission network or the connection and disconnection of a terminal node. For another example, the base station may perform scheduling for wireless power transmission or in-band communication. If a wireless power transmission network is formed for this purpose, a base station node may first be determined. The terminal can receive power from the base station. Also, the terminal can perform in-band communication with the base station. Once the base station node is determined in the wireless power transmission network, the remaining nodes can be determined as the terminal node.

In the wireless power transmission network, there is only one base station node, and one or more terminal nodes may be provided. In the present invention, a time division multiple access (TDMA) method is used for power transmission and communication between a base station and a plurality of terminals a superframe structure employing a division multiple access scheme can be used.

Hereinafter, a super frame according to an embodiment of the present invention will be described.

5 is a configuration diagram of a super frame according to an embodiment of the present invention.

Referring to FIG. 5, a superframe includes a request period, a response period, and an autonomous period. The request period, the response period, and the autonomous period may be sequentially arranged according to time. Therefore, the superframe may start with the request period, end with the response period, and end with the autonomous period. Here, the length of time of the request period and the response period can be variably adjusted.

In the request period, the base station can transmit a request packet to the terminal. For example, the base station may bracket cast a packet for the establishment of a wireless power transmission network during a request period. For another example, the base station may send a packet to the terminal requesting connection or disconnection to the wireless power transmission network during the request period.

In the response period, the terminal can transmit a response packet to the base station. Also, during power transmission, the base station can transmit power to the terminal in the response period. It is also possible that there is no response section if there is no response or no terminal to receive power.

In the autonomous period, the terminal can autonomously transmit information to the base station without requesting the base station. The autonomous section can be started when a certain time has elapsed from the transmission of the response packet or the transmission of the power to the end or the end of the power transmission. The autonomous period may be terminated when the base station transmits a request packet.

On the other hand, the response interval can be time-divided into time slots. The time slot may be one or more, and the length of each time slot may be variable. The base station may divide the response interval into time slots and assign time slots to the terminals. The base station can also determine the length of each time slot. Also, the allocation of time slots can be performed dynamically, and thus can be changed for each super frame.

During the response interval, the terminal may use the allocated time slot. For example, the terminal may send a response packet to the base station during the assigned timeslot. For another example, if the base station transmits power, the terminal can receive power from the base station during the assigned time slot.

The wireless power transmission network can efficiently perform wireless power transmission when there are a plurality of terminal nodes in the wireless power transmission network by using a super frame having a response interval divided into time slots.

Hereinafter, a wireless power transmission method according to an embodiment of the present invention will be described. The wireless power transmission method will be described using the wireless power transmission system, the wireless power transmission network, and the super frame described above. However, the present invention is not limited to the wireless power transmission method, and may be performed using another similar system, network, or frame.

6 is a flowchart of a wireless power transmission method according to an embodiment of the present invention.

Referring to FIG. 6, the wireless power transmission method includes a step S10 of setting up a wireless power transmission network, a step S20 of joining a terminal node to a wireless power transmission network, a step S30 ) And performing a wireless power transmission (S40).

First, it is determined to be the base station among the devices within the range of the wireless power transmission network. At this time, the base station may be determined as a device corresponding to the transmitting apparatus. Even if there are a plurality of transmitting apparatuses in the range, only one transmitting apparatus can be determined as the base station.

When the base station is determined, a wireless power transmission network is established (S10).

The base station transmits a setup request packet during the request interval. At this time, the packet transmission can be performed in a broadcast manner. The setup request packet includes a wireless power transfer network identifier (WPTN-ID) identifying the wireless power transmission network. The network identifier has a unique value that differentiates the wireless power transmission network from other wireless power transmission networks.

The device located within the reception range of the magnetic field transmitted by the base station receives the setup request packet. The device receiving the setup request packet can transmit the setup response packet in the response period as the terminal node. Whereby a base station node and a terminal node are formed and a wireless power transmission network can be established.

Once the wireless power transmission network is established, the terminal nodes may be joined to the wireless power transmission network (S20).

When the wireless power transmission network is established, the base station transmits a join request packet during the request period. At this time, the base station can transmit a join request packet only to an unassociated terminal node. The terminal may send a join response packet during the response interval in response to the join request packet.

The base station can transmit a join confirmation packet to the terminal upon receiving the response packet. The join confirmation packet includes a node identifier (nod identifier). The node identifier is an identifier for distinguishing each node in the wireless power transmission network, and has a unique value for each node. Accordingly, a node identifier is assigned to each node, and a connection is established between the base station and each terminal node.

Meanwhile, the base station broadcasts until the node identifier is assigned to the terminal node, or the base station and the terminal can perform communication using a unique identifier. The unique identifier is a unique identifier assigned to each device by the manufacturer.

When joining is completed, scheduling for wireless power transmission is performed (S30).

The base station may transmit a status information request packet to the terminal joined during the request interval. Here, the base station can divide the response interval into time slots and allocate each terminal node to each time slot. The status information request packet includes information on the time slot number per node.

The terminal may transmit a status information response packet during the response period in response to the status information request packet. Here, each terminal can transmit a status information response packet during the allocated time slot in the response interval. Since the terminals are allocated to each time slot, even if there are a plurality of terminals, response packets may not collide. The status information response packet may include the type of the device, the rated voltage, the charged state of the battery, whether or not it is in the charging zone, and the like.

The base station receives the status information request packet from the terminal and can schedule the response period of the superframe for wireless power transmission based on the status information request packet.

The base station can divide the response period of the superframe for wireless power transmission into time slots and allocate them to terminals. For example, the base station can divide a time slot by the number of terminal nodes, and assign a terminal to each time slot.

When the scheduling is completed, power is transmitted (S40).

The base station can transmit a power reception request frame to the terminal node in the request period of the superframe for wireless power transmission. The power reception request frame may include information on a node identifier, a time slot number, and a length of a time slot.

Hereinafter, an area on a wireless power network formed based on magnetic field communication according to an embodiment of the present invention will be described.

7 is a conceptual diagram illustrating an area on a wireless power network formed based on magnetic field communication in accordance with the embodiments disclosed herein.

Referring to FIG. 7, a base station or a base station (or a wireless power transmission apparatus) 100 and at least one node or terminal (or at least one wireless power receiving apparatus 200a to 200b, 200z) is present.

The area on the wireless power network N100 can be largely divided into two areas.

The first zone can normally transmit packets containing various information needed for wireless power transmission (or charging) based on magnetic field communication with the base station 100 (or normally, And a charging zone (Charging Zone), which is an area where the wireless power can be charged by receiving the wireless power signal from the base station 100 normally.

In the second region, at least one node can normally transmit a packet including various information required for wireless power transmission (or charging) based on magnetic field communication with the base station 100, And may be a communication zone that is an area where the wireless power can not be charged because the wireless power signal can not be normally received.

Whether magnetic field communication occurs normally can be determined by whether or not the at least one node transmits a packet containing the various information to the wireless power transmission device and normally receives a response packet corresponding to the transmitted packet have.

Whether or not the magnetic field communication is normally performed is determined by whether the base station 100 transmits a packet including the various information to the wireless power receiving apparatus and normally receives a response packet corresponding to the transmitted packet Can be determined.

Whether or not the wireless power can be normally charged can be determined based on at least one of a transmission efficiency in the wireless power transmission, a transmission gain, a receiving end voltage of the at least one node, and a receiving end current.

The transmission efficiency may be a ratio between the transmission power of the wireless power transmission apparatus (or the base station 100) and the reception power of the at least one wireless power receiving apparatus (or the nodes 200a to 200b, 200x to 200z). Here, the received power may be detected based on the receiving-side voltage information and the receiving-side current information.

In addition, the transmission gain may be a ratio between a transmitting-side voltage of the wireless power transmission apparatus 100 and the receiving-side voltage.

For example, if the receiving end voltage of the at least one wireless power receiving device (or node) is determined by at least one of the predetermined receiving end voltage (charging specification, battery specification, user request, and design parameters by the manufacturer of the wireless power receiving device , It can be determined whether the at least one node is able to charge the wireless power normally.

According to one embodiment disclosed herein, the wireless power normal charge state can be confirmed or determined by the at least one node 200a to 200b, 200x to 200z. In this case, the at least one node 200a to 200b, 200x to 200z may transmit information on the wireless power normal charge state to the base station 100. [ Information on whether or not the wireless power is normally charged may be transmitted to the base station 100 in a packet form (or included in a packet).

Each of the at least one or more nodes 200a to 200b and 200x to 200z may determine whether or not the node 200 itself exists in the charging area and the communication area by determining whether the wireless power is normally charged. In this case, the nodes 200a to 200b in the charging area and the nodes 200x to 200z in the communication area of the at least one node may be determined.

Also, the at least one node 200a to 200b, 200x to 200z may provide (or transmit) information to the base station 100 about whether the node 200a exists in the charging area or the communication area. Likewise, the information may be transmitted to the base station 100 in packet form.

Hereinafter, a method of providing guide information by a wireless power receiving apparatus (or node) according to an embodiment of the present invention will be described.

8 is a flowchart illustrating a method of providing guide information by a wireless power receiving apparatus according to an embodiment disclosed herein.

Referring to FIG. 8, a method of providing guide information by a wireless power receiving apparatus according to an embodiment disclosed herein may include the following steps.

First, the wireless power receiving apparatus can determine whether magnetic field communication is normally performed with the wireless power transmission apparatus (S110).

Next, the wireless power receiving apparatus can receive the wireless power signal from the wireless power transmission apparatus when the magnetic field communication is normally performed (S120).

Next, the wireless power receiving apparatus can determine whether wireless power is normally charged based on the received wireless power signal (S130).

Next, the wireless power receiving apparatus can provide guide information related to wireless power charging when the wireless power is not normally charged.

According to one embodiment, whether or not the magnetic field communication is normally performed includes transmitting a packet including the various information to the wireless power transmission apparatus, and transmitting a response packet corresponding to the transmitted packet from the wireless power transmission apparatus normally Or whether or not it has received the data.

In addition, according to one embodiment, the area where the wireless power network is formed includes a charging zone where the magnetic field communication and wireless power charging are normally performed, and the magnetic field communication is normally performed, but the wireless power charging is normally performed Wherein the wireless power receiving apparatus transmits information indicating that the wireless power receiving apparatus is present in the communication area to the wireless power transmitting apparatus when the wireless power is not normally charged The packet can be transmitted.

According to an embodiment, the wireless power receiving apparatus can determine whether the wireless power is fully charged when the wireless power is normally charged. When the buffer transition occurs, the wireless power receiving apparatus may provide guide information to the user of the wireless power receiving apparatus that the wireless power receiving apparatus may be out of the charging region.

9 is a diagram illustrating an example of a method of providing guide information by a wireless power receiving apparatus according to an embodiment disclosed herein.

The wireless power receiving apparatus may be various electronic apparatuses. For example, the wireless power receiver may be a smart phone, a portable terminal, a mobile terminal, a personal digital assistant (PDA), a portable multimedia player (PMP) A notebook computer, a Wibro terminal, an IPTV terminal, a digital broadcasting terminal, a telematics terminal, a navigation terminal, an AVN (Audio Video Navigation) terminal, a television, a 3D television, An audio / video (A / V) system, a home theater system, and the like.

Referring to FIG. 9, it can be seen that the wireless power receiving apparatus 200 is an electronic device in the form of a smartphone.

In this case, the wireless power receiving apparatus 200 can determine whether the wireless power transmission apparatus 100 normally performs magnetic field communication.

Also, the wireless power receiving apparatus 200 may receive the wireless power signal from the wireless power transmission apparatus when the magnetic field communication is normally performed.

Also, the wireless power receiving apparatus 200 may determine whether wireless power is normally charged based on the received wireless power signal.

In addition, the wireless power receiving apparatus 200 may provide guide information related to wireless power charging when the wireless power is not normally charged.

As described above, the guide information includes information on whether or not the wireless power can be charged at the position where the wireless power receiving apparatus exists, information indicating that the wireless power can be charged by entering the wireless power rechargeable region, Information on a charging rate that may occur when the wireless power is charged when entering the rechargeable area, information on a charging time expected when the wireless power is charged upon entering the rechargeable area, And / or information.

In addition, according to one embodiment, the region where the radio power network is formed,

A charging zone in which the magnetic field communication and wireless power charging are normally performed and a communication zone in which the magnetic field communication is normally performed but the wireless power charging is not normally performed and the wireless power is normally charged The wireless power transmission apparatus may transmit a packet including information indicating that the wireless power receiving apparatus is present in the communication area.

Referring to FIG. 9 (a), the wireless power receiving apparatus 200a can determine which area of the wireless network area is located.

When it is determined that the wireless power receiving apparatus 200a is in the communication area, the wireless power receiving apparatus 200a may provide guide information related to wireless power charging to the user of the wireless power receiving apparatus 200a .

As described above, the guide information includes information on whether or not the wireless power can be charged at the position where the wireless power receiving apparatus exists, information indicating that the wireless power can be charged by entering the wireless power rechargeable region, Information on a charging rate that may occur when the wireless power is charged when entering the rechargeable area, information on a charging time expected when the wireless power is charged upon entering the rechargeable area, Or information.

For example, as in the case of FIG. 9 (a), "Charging is not in progress, enter the chargeable area", "Charge is 1000 won" or "Current battery state is 20% , And the estimated buffer time for charging is 1 hour ".

According to a modified embodiment, the guide information may be guide information indicating a charged area.

For example, referring to FIG. 9 (b), the wireless power receiving apparatus 200b may provide the user with the guide information "It is a rechargeable area when the wireless power transmission apparatus moves 20 cm further."

Further, according to another modified embodiment, the guide information indicating the charged area may be information indicating a geographical location. For example, the wireless power transmission apparatus 200b may display a digital map on a screen (or display a screen showing a geographical location), and may indicate a charging area and a communication area. Furthermore, the guide information indicating the charging area is provided outside in the form of a hologram, so that the user can visually easily distinguish the charging area and the communication area.

Referring to FIG. 9 (c), the wireless power receiving apparatus 200c can check or check whether the wireless power receiving apparatus 200c is fully charged when the wireless power receiving apparatus 200c is present in the charging region.

The wireless power receiving apparatus 200c can provide the user of the wireless power receiving apparatus 200c with the guide information "Charging is completed, the terminal may be taken ".

Hereinafter, a guide information providing method by a wireless power transmission apparatus according to an embodiment of the present invention will be described.

10 is a flowchart illustrating a method of providing guide information by a wireless power transmission apparatus according to an embodiment disclosed herein.

Referring to FIG. 10, a guide information providing method by a wireless power transmission apparatus according to an embodiment disclosed herein may be performed as follows.

First, the wireless power transmission apparatus can determine whether or not magnetic field communication is properly performed with the at least one wireless power receiving apparatus (S210).

Next, the wireless power transmission apparatus may transmit the wireless power signal to the at least one wireless power receiving apparatus when the magnetic field communication is not normally performed (S220).

Next, the wireless power transmission apparatus may acquire information on whether or not the wireless power is normally charged based on the received wireless power signal from the wireless power receiving apparatus (S230).

Next, the wireless power transmission apparatus may provide guide information related to wireless power charging based on the obtained information on the normal charging state (S240).

According to one embodiment, whether or not the magnetic field communication is normally performed includes transmitting a packet including the various information to the at least one wireless power receiving apparatus, and transmitting a response packet corresponding to the transmitted packet to the at least one Or may be determined by whether or not it is normally received from the wireless power receiving apparatus.

According to an embodiment, the guide information may include information on whether or not the wireless power can be recharged at the current position, information about whether or not the wireless power can be recharged at the current position, Information on a charging rate that may occur when charging the wireless power, information on a charging time expected when the wireless power is charged when entering the charging area, And the information on the battery charging state of the wireless power receiving apparatus described above.

In addition, according to one embodiment, the area where the wireless power network is formed includes a charging zone where the magnetic field communication and wireless power charging are normally performed, and the magnetic field communication is normally performed, but the wireless power charging is normally performed And information on the obtained normal charging state may be information on which of the charging area and the communication area the at least one wireless power receiving apparatus is in .

According to an exemplary embodiment of the present invention, providing the guide information related to the wireless power charging based on the acquired information on the normal charging state may include providing the at least one wireless power receiving apparatus with the at least one Information on whether or not full charging is obtained from the wireless power receiving apparatuses described above and provides guide information that the charging area may be exited when fully charged, and when the at least one wireless power receiving apparatus is in the communication area, By providing guide information that it can enter the charging area and charge the wireless power.

11 is a diagram illustrating an example of a guide information providing method by a wireless power transmission apparatus according to an embodiment disclosed herein.

Referring to FIG. 11, the wireless power transmission apparatus 100 may exchange various information related to wireless power charging based on the magnetic field communication with the first node 200 'and the second node 200' '.

In this case, the wireless power transmission apparatus 100 obtains information on whether or not each node is in the charging zone from the first node 200 'or the second node 200 " .

The wireless power transmission apparatus 100 may obtain the information from the first node 200 'and the second node 200 " in packet form.

In addition, the wireless power transmission apparatus 100 may provide different guide information depending on whether the first node 200 'and the second node 200' 'are located in each region.

For example, when the first node 200 'is in the charging zone, the wireless power transmission apparatus 100 acquires information on the charging state from the first node 200' When the wireless network 200 'is fully buffered, the screen of the wireless power transmission apparatus 100 displays the guide information "Charging of the first node is completed, the terminal corresponding to the first node may be taken & Can be displayed.

Further, for example, when the second node 200 " is in the communication area, the wireless power transmission apparatus 100 transmits a message "the second node is in the communication area, enter the charging area" The guide information can be displayed on the screen.

According to a modified embodiment, the wireless power transmission apparatus 100 may display geographical information indicating a charging area and a communication area on the screen. For example, a digital map may be displayed on the screen, and a graphic form indicating the charging area and the communication area may be displayed. In addition, the wireless power transmission apparatus 100 may display the geographical information in the form of a hologram to provide the guide information to the outside.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

100: Wireless power transmission device
200: Wireless power receiving device

Claims (10)

Receiving and transmitting a packet including various information for receiving wireless power from a wireless power transmission apparatus on a wireless power network based on a magnetic field communication, receiving a wireless power signal generated from the wireless power transmission apparatus, In a guide information providing method by a receiving apparatus,
Determining whether magnetic field communication is normally performed with the wireless power transmission apparatus;
If the magnetic field communication is not normally performed,
Receiving the wireless power signal from the wireless power transmission device;
Determining whether wireless power is normally charged based on the received wireless power signal; And
If the wireless power is not normally charged,
Guide information providing method comprising the step of providing the guide information associated with the wireless power charging. The method of claim 1, wherein whether or not the magnetic field communication is normally performed includes:
Transmitting a packet including the various information to the wireless power transmission apparatus,
And whether or not the response packet corresponding to the transmitted packet is normally received from the wireless power transmission apparatus. The information processing apparatus according to claim 1,
Information indicating whether wireless power can be charged at a location where the wireless power receiving apparatus exists, information indicating that wireless power can be charged by entering a wireless power rechargeable region, information indicating that wireless power can be charged, Wherein the charging information includes at least one of information on a charging charge that may occur when the battery pack is charged, information on a charging time expected when charging the battery pack, and information on a battery charging state of the wireless power receiving device. Methods of providing information. The method of claim 1, wherein the area where the wireless power network is formed,
A charging zone in which the magnetic field communication and wireless power charging are normally performed and a communication zone in which the magnetic field communication is normally performed but the wireless power charging is not normally performed,
If the wireless power is not normally charged,
And transmitting a packet including information indicating that the wireless power receiver exists in the communication area to the wireless power transmitter. 5. The method of claim 4,
Determining whether the wireless power is fully charged if the wireless power is normally charged; And
Further comprising the step of providing guide information indicating that the charging area is out of the charging area when the buffering transition occurs. Receiving and transmitting a packet including a variety of information for transmitting wireless power to at least one wireless power receiving apparatus on a wireless power network based on magnetic field communication and transmitting the wireless power signal to the at least one wireless power receiving apparatus, A method for providing guide information by a wireless power transmission apparatus for transmitting a wireless signal,
Determining whether magnetic field communication is normally performed with the at least one wireless power receiving apparatus;
If the magnetic field communication is not normally performed,
Transmitting the wireless power signal to the at least one wireless power receiving device;
Obtaining information on whether the wireless power is normally charged based on the received wireless power signal from the wireless power receiving apparatus; And
And providing guide information related to wireless power charging based on the obtained information on whether the normal charging is performed. 7. The method of claim 6, wherein whether or not the magnetic field communication is normally performed includes:
Transmitting a packet including the various information to the at least one wireless power receiving apparatus,
And whether or not a response packet corresponding to the transmitted packet is normally received from the at least one wireless power receiving apparatus. 7. The information processing apparatus according to claim 6,
Information indicating whether or not the wireless power can be recharged at the current position, information indicating that the wireless power can be charged by entering the rechargeable region of the wireless power, information indicating that the wireless power can be recharged at the current position, Information on a charging charge that may occur upon entering the wireless power, information on the charging time expected when charging the wireless power by entering the charging area, and information on the battery charging state of the at least one wireless power receiving device Wherein the guide information includes at least one of the following: The method according to claim 6,
The area in which the wireless power network is formed,
A charging zone in which the magnetic field communication and wireless power charging are normally performed and a communication zone in which the magnetic field communication is normally performed but the wireless power charging is not normally performed,
The information on whether or not the obtained normal charge is satisfied,
And at least one of the charging area and the communication area is the at least one wireless power receiver. 10. The method of claim 9,
The step of providing the guide information related to the wireless power charging based on the obtained information on the normal charging state includes:
When the at least one wireless power receiving device is in the charging area,
Acquiring information on whether or not full charging is performed from the at least one wireless power receiving apparatus,
Providing the guide information that when the battery is fully charged, it may be out of the charging area,
When the at least one wireless power receiving apparatus is in the communication area,
Further comprising the step of providing guide information indicating that the mobile terminal can enter the charging area and charge the wireless power.

Images