JP2014220875A - Power feeding apparatus, power feeding method, and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately perform charging with an electronic apparatus by controlling wireless power feeding to the electronic apparatus according to communication between a power feeding apparatus and the electronic apparatus.SOLUTION: The power feeding apparatus includes: power feeding means for performing wireless power feeding for an electronic apparatus; control means for controlling communication means to transmit, to the electronic apparatus, data for verifying whether or not the electronic apparatus has data for identifying an application of wireless power feeding. When certification between first certification processing and second certification processing is completed by performing either one of the first certification processing and the second certification processing different from the first certification processing according to whether or not the electronic apparatus has the data for identifying the application of wireless power feeding, the power feeding apparatus controls the power feeding means to start wireless power feeding to the electronic apparatus.

Description

  The present invention relates to a power supply apparatus that performs wireless power supply.

  2. Description of the Related Art In recent years, a power feeding system is known that includes a power feeding device that supplies power wirelessly without being connected by a connector, and an electronic device that receives power supplied wirelessly from the power feeding device. In such a power supply system, an electronic device that charges a battery using power supplied from a power supply apparatus is known (Patent Document 1).

JP 2010-39283 A

  In such a power supply system, communication between the power supply apparatus and the electronic device is performed, and it has not been considered that the power supply apparatus controls wireless power supply using a communication result with the electronic apparatus. For this reason, the power supply device cannot accurately detect the function and state of the electronic device, and thus cannot properly control the power supply to the electronic device.

  Accordingly, an object of the present invention is to appropriately perform wireless power feeding to an electronic device in accordance with communication between the power feeding device and the electronic device.

  The power supply apparatus according to the present invention is a power supply apparatus, and includes a power supply unit that wirelessly supplies power to an electronic device, a communication unit that communicates with the electronic device, and the electronic device for identifying a wireless power supply application. Control means for controlling the communication means so as to transmit to the electronic device data for confirming whether or not the electronic device has the data, and the control means allows the electronic device to execute a wireless power supply application. One of the first authentication process and the second authentication process, which is different from the first authentication process, is performed depending on whether or not the data for identification is present, and the first authentication process and the first authentication process When the authentication between the power supply apparatus and the electronic device is completed by performing any one of the second authentication processes, the control unit is configured to start the wireless power supply to the electronic device. And controlling the stage.

  The power supply method according to the present invention includes a step of communicating with an electronic device, and transmits data to the electronic device for confirming whether the electronic device has data for identifying a wireless power supply application. One of the first authentication process and the second authentication process different from the first authentication process depending on whether the electronic device has data for identifying a wireless power supply application. And when the authentication between the power supply apparatus and the electronic device is completed by performing any one of the first authentication process and the second authentication process, the wireless communication to the electronic device is performed. And a step of starting power feeding.

  The computer program according to the present invention transmits to the electronic device a step of communicating with the electronic device, and data for confirming whether the electronic device has data for identifying a wireless power supply application. One of the first authentication process and the second authentication process different from the first authentication process depending on whether the electronic device has data for identifying a wireless power supply application. And when the authentication between the power supply apparatus and the electronic device is completed by performing any one of the first authentication process and the second authentication process, the wireless communication to the electronic device is performed. A computer program that causes a computer to execute a step of starting power feeding.

  ADVANTAGE OF THE INVENTION According to this invention, according to communication with an electric power feeder and an electronic device, the wireless electric power feeding to an electronic device can be performed appropriately.

It is a figure which shows an example of the wireless electric power feeding system which concerns on Example 1 of this invention. It is a block diagram which shows an example of the electric power feeder which concerns on Example 1 of this invention. It is a block diagram which shows an example of the electronic device which concerns on Example 1 of this invention. It is a figure which shows the kind of tag of the electronic device which concerns on Example 1 of this invention. It is an example of the state transition diagram of the electric power feeder which concerns on Example 1 of this invention. It is a flowchart figure which shows an example of the control processing performed by the electric power feeder which concerns on Example 1 of this invention. It is a flowchart figure which shows an example of the authentication process performed by the electric power feeder which concerns on Example 1 of this invention. It is a flowchart figure which shows an example of the status data exchange process performed by the electric power feeder which concerns on Example 1 of this invention. It is a flowchart figure which shows an example of the electric power feeding process performed by the electric power feeder which concerns on Example 1 of this invention. It is a flowchart figure which shows an example of the 1st authentication process performed by the electric power feeder which concerns on Example 1 of this invention. It is a flowchart figure which shows an example of the 2nd authentication process performed by the electric power feeder which concerns on Example 1 of this invention.

Example 1
Embodiment 1 of the present invention will be described below with reference to the drawings.

  As illustrated in FIG. 1, the power supply system according to the first embodiment includes a power supply apparatus 100 and an electronic device 200. In the power supply system according to the first embodiment, when the electronic device 200 exists within the predetermined range 300 of the power supply apparatus 100, the power supply apparatus 100 supplies power to the electronic apparatus 200 wirelessly. In addition, when the electronic device 200 exists within the predetermined range 300, the electronic device 200 can receive the power output from the power supply apparatus 100 wirelessly. Further, when the electronic device 200 does not exist within the predetermined range 300, the electronic device 200 cannot receive power from the power supply apparatus 100. Note that the predetermined range 300 is a range in which the power supply apparatus 100 can communicate with the electronic device 200. Although the predetermined range 300 is the range on the housing of the power supply apparatus 100, it is not limited to this. Note that the power supply apparatus 100 may be one that wirelessly supplies power to a plurality of electronic devices.

  The electronic device 200 may be an imaging device or a playback device, or may be a communication device such as a mobile phone or a smartphone. Electronic device 200 may be a battery pack including a battery. The electronic device 200 may be an automobile, a display, or a personal computer.

  Next, an example of the configuration of the power supply apparatus 100 according to the first embodiment will be described with reference to FIG. As illustrated in FIG. 2, the power supply apparatus 100 includes a control unit 101, a power supply unit 102, a memory 108, a display unit 109, an operation unit 110, a current detection unit 111, a temperature detection unit 112, and a second communication unit 113. The power supply unit 102 includes a power generation unit 103, a detection unit 104, a matching circuit 105, a first communication unit 106, and a power supply antenna 107.

  The control unit 101 controls the power supply apparatus 100 by executing a computer program recorded in the memory 108. The control unit 101 includes, for example, a CPU (Central Processing Unit) and an MPU (Micro Processing Unit). Note that the control unit 101 is configured by hardware. Further, the control unit 101 includes a timer 101a.

  The power supply unit 102 is used to perform wireless power supply based on a predetermined power supply method. The predetermined power supply method is, for example, a power supply method using a magnetic field resonance method. In the magnetic field resonance method, power is transmitted from the power supply apparatus 100 to the electronic apparatus 200 in a state where resonance is performed between the power supply apparatus 100 and the electronic apparatus 200. The state where resonance is performed between the power supply apparatus 100 and the electronic device 200 is a state where the resonance frequency of the power supply antenna 107 of the power supply apparatus 100 matches the resonance frequency of the power reception antenna 203 of the electronic device 200. .

  When the AC power supply (not shown) and the power supply apparatus 100 are connected, the power generation unit 103 uses the power supplied from the AC power supply (not shown) to output to the outside via the power supply antenna 107. Is generated.

  The power generated by the power generation unit 103 includes communication power and predetermined power. The communication power is used for the first communication unit 106 to communicate with the electronic device 200. The communication power is assumed to be weak power of 1 W or less, for example. The communication power may be power defined in the communication standard of the first communication unit 106. The predetermined power is used for the electronic device 200 to perform charging or a specific operation. The predetermined power is assumed to be 2 W or more, for example. Further, the predetermined power is not limited to 2 W or more as long as it is higher than the communication power. The predetermined power value is set by the control unit 101 based on data acquired from the electronic device 200.

  The power generated by the power generation unit 103 is supplied to the feeding antenna 107 via the detection unit 104 and the matching circuit 105.

  The detection unit 104 detects a voltage standing wave ratio (VSWR) in order to detect a resonance state between the power supply apparatus 100 and the electronic device 200. Further, the detection unit 104 supplies data indicating the detected VSWR to the control unit 101. The VSWR is a value indicating a relationship between a traveling wave of power output from the power feeding antenna 107 and a reflected wave of power output from the power feeding antenna 107. Using the VSWR data supplied from the detection unit 104, the control unit 101 can detect a change in the resonance state between the power supply apparatus 100 and the electronic device 200 and the presence of a foreign object. The foreign material is, for example, a metal or an IC card. Note that the foreign object may be a device that does not have a charging control unit for controlling charging of the battery or a device that does not have a communication unit for communicating with the power supply apparatus 100. In addition, the foreign object may be a device that does not support the communication standard of the first communication unit 106.

  Matching circuit 105 includes a circuit that sets a resonance frequency of power feeding antenna 107 and a circuit that performs impedance matching between power generation unit 103 and power feeding antenna 107.

  When the power feeding apparatus 100 outputs any one of communication power and predetermined power via the power feeding antenna 107, the control unit 101 sets the resonance frequency of the power feeding antenna 107 to the predetermined frequency f. To control. The predetermined frequency f is, for example, 13.56 MHz.

  For example, the first communication unit 106 performs wireless communication based on the NFC standard defined by the NFC (Near Field Communication) forum. The communication standard of the first communication unit 106 may be the ISO / IEC 18092 standard, the ISO / IEC 14443 standard, or the ISO / IEC 21481 standard. When communication power is output from the power supply antenna 107, the first communication unit 106 can transmit and receive data for performing wireless power supply with the electronic device 200 via the power supply antenna 107. However, it is assumed that the first communication unit 106 does not communicate with the electronic device 200 via the power supply antenna 107 during a period in which predetermined power is output from the power supply antenna 107. The period during which the predetermined power is output from the feeding antenna 107 is hereinafter referred to as “predetermined time”. The predetermined time is set by the control unit 101 based on data acquired from the electronic device 200.

  The data transmitted / received between the first communication unit 106 and the electronic device 200 is data corresponding to NDEF (NFC Data Exchange Format), for example.

  When transmitting data to the electronic device 200, the first communication unit 106 performs processing for superimposing data to be transmitted to the electronic device 200 on communication power supplied from the power generation unit 103. The communication power on which the data is superimposed is transmitted to the electronic device 200 via the power feeding antenna 107.

  When the first communication unit 106 receives data from the electronic device 200, the first communication unit 106 detects a current flowing through the power feeding antenna 107, and receives data from the electronic device 200 according to the detection result of the current. This is because when the electronic device 200 transmits data to the power supply apparatus 100, the data is transmitted by changing the internal load of the electronic device 200. When the load inside the electronic device 200 changes, the current flowing through the power feeding antenna 107 changes. For this reason, the first communication unit 106 can receive data from the electronic device 200 by detecting the current flowing through the power feeding antenna 107.

  Note that the first communication unit 106 operates as a reader / writer defined in the NFC standard.

  The power feeding antenna 107 is an antenna for outputting any one of communication power and predetermined power to the electronic device 200. The power supply antenna 107 is used for the first communication unit 106 to perform wireless communication with the electronic device 200 using the NFC standard.

  The memory 108 records a computer program for controlling the power supply apparatus 100. Furthermore, the memory 108 records power supply parameters regarding the power supply apparatus 100, a flag for controlling power supply, and the like. In addition, the memory 108 records data acquired by at least one of the first communication unit 106 and the second communication unit 113 from the electronic device 200.

  The display unit 109 displays video data supplied from the memory 108 and the second communication unit 113.

  The operation unit 110 provides a user interface for operating the power supply apparatus 100. The operation unit 110 includes buttons, switches, a touch panel, and the like for operating the power supply apparatus 100. The control unit 101 controls the power feeding apparatus 100 according to the input signal input via the operation unit 110.

  The current detection unit 111 detects a current flowing through the power feeding antenna 107 and supplies data indicating the detected current to the control unit 101. The control unit 101 can detect the presence of a foreign object using the current data supplied from the current detection unit 111.

  The temperature detection unit 112 detects the temperature of the power supply apparatus 100 and supplies data indicating the detected temperature to the control unit 101. The control unit 101 can detect the presence of a foreign object using the temperature data supplied from the temperature detection unit 112. Note that the temperature of the power supply apparatus 100 detected by the temperature detection unit 112 may be the temperature inside the power supply apparatus 100 or the temperature of the surface of the power supply apparatus 100.

  The second communication unit 113 performs wireless communication with the electronic device 200 based on a communication standard different from the communication standard of the first communication unit 106. The communication standard of the second communication unit 113 is, for example, a wireless LAN (Wireless Local Area Network) standard or a Blue Tooth (registered trademark) standard. The second communication unit 113 can transmit and receive data including at least one of video data, audio data, and commands between the power supply apparatus 100 and the electronic device 200.

  The power supply apparatus 100 supplies power to the electronic device 200 wirelessly. However, “wireless” may be rephrased as “non-contact” or “non-contact”.

  Next, an example of the configuration of the electronic device 200 will be described with reference to FIG. The electronic device 200 includes a control unit 201, a power reception unit 202, a power detection unit 207, a regulator 208, a load unit 209, a charging unit 210, a battery 211, a temperature detection unit 212, a memory 213, an operation unit 214, and a second communication unit 215. Have The power receiving unit 202 includes a power receiving antenna 203, a matching circuit 204, a rectifying / smoothing circuit 205, and a first communication unit 206.

  The control unit 201 controls the electronic device 200 by executing a computer program recorded in the memory 213. The control unit 201 includes, for example, a CPU and an MPU. Note that the control unit 201 is configured by hardware.

  The power receiving unit 202 corresponds to a predetermined power feeding method and is used to receive power from the power feeding apparatus 100 wirelessly.

  The power receiving antenna 203 is an antenna for receiving power supplied from the power feeding apparatus 100. The power receiving antenna 203 is used for the first communication unit 206 to perform wireless communication with the power supply apparatus 100 using the NFC standard. The power received by the electronic device 200 from the power feeding apparatus 100 via the power receiving antenna 203 is supplied to the rectifying / smoothing circuit 205 via the matching circuit 204.

  The matching circuit 204 includes a circuit that sets the resonance frequency of the power receiving antenna 203. The control unit 201 can set the resonance frequency of the power receiving antenna 203 by controlling the matching circuit 204.

  The rectifying / smoothing circuit 205 generates DC power from the power received by the power receiving antenna 203. Further, the rectifying / smoothing circuit 205 supplies the generated DC power to the regulator 208 via the power detection unit 207. The rectifying / smoothing circuit 205 supplies the first communication unit 206 with data removed from the power received by the power receiving antenna 203 when the data is superimposed on the power received by the power receiving antenna 203.

  The first communication unit 206 communicates with the power supply apparatus 100 based on the same communication standard as the first communication unit 106. The first communication unit 206 includes a memory 206a. In the memory 206a, WPT (Wireless Power Transfer) _RTD (Record Type Definiton) data 400 is recorded. The WPT_RTD data 400 stores a plurality of data corresponding to NDEF. The WPT_RTD data 400 stores data necessary for performing wireless power feeding between the power feeding apparatus 100 and the electronic device 200.

  In the WPT_RTD data 400, identification data for identifying the WPT_RTD data 400 is stored. The identification data includes the record type name, data indicating the power supply method and power supply control protocol supported by the electronic device 200, the product name and ID of the electronic device 200, the power receiving capability data of the electronic device 200, and Data indicating the type of tag being included is included. The record type name is data indicating a record type (record type) for identifying the content and structure of data stored in the WPT_RTD data 400. The power receiving capability data is data indicating the power receiving capability of the electronic device 200, and indicates, for example, the maximum value of power that can be received by the electronic device 200.

  The WPT_RTD data 400 may further store power reception status data and power supply status data. The power reception status data includes data indicating the state of the electronic device 200. For example, the power reception status data includes a value of required power requested from the power supply apparatus 100, a value of power received by the electronic device 200 from the power supply apparatus 100, data regarding the remaining capacity of the battery 211 and charging of the battery 211, Contains error data related to errors. The error data includes data indicating whether or not an error has occurred in the electronic device 200 and data indicating the type of error. The power supply status data includes data indicating the state of the power supply apparatus 100. For example, the power supply status data includes identification data of the power supply apparatus 100, data indicating whether the power supply apparatus 100 starts transmission of predetermined power to the electronic device 200, power supply parameters set by the power supply apparatus 100, and the like. included.

  The first communication unit 206 analyzes the data supplied from the rectifying / smoothing circuit 205. After that, the first communication unit 206 transmits data read from the WPT_RTD data 400 to the power supply apparatus 100 or writes data received from the power supply apparatus 100 to the WPT_RTD data 400 using the data analysis result. Further, the first communication unit 206 transmits response data corresponding to the data supplied from the rectifying and smoothing circuit 205 to the power supply apparatus 100.

  The first communication unit 206 performs processing for changing the load in the first communication unit 206 in order to transmit the data read from the WPT_RTD data 400 and the response data to the power supply apparatus 100.

  The electronic device 200 corresponds to a tag specified in the NFC standard. There are a first tag and a second tag as tag types that the electronic device 200 can handle. Hereinafter, the first tag and the second tag will be described with reference to FIG. FIG. 4A shows the first tag, and FIG. 4B shows the second tag.

  The first tag will be described with reference to FIG. In the WPT_RTD data 400 of FIG. 4A, identification data including data indicating that the electronic device 200 has the first tag is stored. When the electronic device 200 has the first tag, the control unit 201 can read data stored in the WPT_RTD data 400 via an internal bus interface (not shown). Furthermore, when the electronic device 200 has the first tag, the control unit 201 can write data to the WPT_RTD data 400 via an internal bus interface (not shown).

  When the electronic device 200 has the first tag, for example, the control unit 201 can control each unit of the electronic device 200 using the power supply status data read from the WPT_RTD data 400. When the electronic device 200 has the first tag, for example, the control unit 201 periodically detects power reception status data using data supplied from each unit of the electronic device 200, and uses the detected power reception status data. WPT_RTD data 400 can be written. The first tag may be referred to as an “active tag” or a “dynamic tag”. As shown in FIG. 4A, identification data, power reception status data, and power supply status data are stored in the WPT_RTD data 400 when the electronic device 200 has the first tag.

  The second tag will be described with reference to FIG. In the WPT_RTD data 400 of FIG. 4B, identification data including data indicating that the electronic device 200 has the second tag is stored. When electronic device 200 has the second tag, control unit 201 cannot read data stored in WPT_RTD data 400 and cannot write data to WPT_RTD data 400. In this case, for example, the control unit 201 cannot control the electronic device 200 using the power supply status data stored in the WPT_RTD data 400, and writes or appends the power reception status data to the WPT_RTD data 400. I can't. As shown in FIG. 4B, it is assumed that the WPT_RTD data 400 when the electronic device 200 has the second tag stores identification data but does not store power reception status data. Further, the power supply status data may be stored in the WPT_RTD data 400 when the electronic device 200 has the second tag.

  Note that when the electronic device 200 has at least one of the first tag and the second tag, the power supply apparatus 100 uses the first communication unit 106 to transfer the data stored in the WPT_RTD data 400. Can be read. Further, in this case, the power supply apparatus 100 can also write data into the WPT_RTD data 400 using the first communication unit 106.

  In the first embodiment, the configuration of the electronic device 200 will be described on the assumption that the electronic device 200 has the first tag.

  The power detection unit 207 detects the power received via the power receiving antenna 203 and supplies data indicating the detected power to the control unit 201.

  The regulator 208 supplies at least one of the power supplied from the rectifying / smoothing circuit 205 and the power supplied from the battery 211 to each unit of the electronic device 200 in response to an instruction from the control unit 201.

  The load unit 209 includes an imaging unit that generates video data such as a still image and a moving image from an optical image of a subject, a playback unit that plays back video data, and the like.

  Charging unit 210 charges battery 211. The charging unit 210 controls whether the battery 211 is charged using the power supplied from the regulator 208 or the power discharged from the battery 211 is supplied to the regulator 208 in accordance with an instruction from the control unit 201. The charging unit 210 periodically detects the remaining capacity of the battery 211 and supplies data indicating the remaining capacity of the battery 211 and data related to charging of the battery 211 to the control unit 201.

  The battery 211 is a battery that can be connected to the electronic device 200. The battery 211 is a rechargeable secondary battery, such as a lithium ion battery. The battery 211 may be other than a lithium ion battery.

  The temperature detection unit 212 detects the temperature of the electronic device 200 and supplies data indicating the detected temperature to the control unit 201.

  The memory 213 stores data such as a computer program for controlling the electronic device 200 and parameters related to the electronic device 200. Furthermore, it is assumed that WPT_AFI data 500 is recorded in the memory 213. The WPT_AFI data 500 is data corresponding to “Application Family Identifier” defined in Type B of the NFC standard, and is data for identifying a wireless power feeding application. The WPT_AFI data 500 is used for detecting a power feeding method supported by the electronic device 200 and a power feeding control protocol supported by the electronic device 200.

  The operation unit 214 provides a user interface for operating the electronic device 200. The control unit 201 controls the electronic device 200 according to the input signal input via the operation unit 214.

  The second communication unit 215 performs wireless communication with the power supply apparatus 100. Note that the second communication unit 215 performs wireless communication with the power supply apparatus 100 based on the same communication standard as that of the second communication unit 113, for example.

(State transition diagram of power supply apparatus 100)
The state transition of the power supply apparatus 100 according to the first embodiment will be described with reference to FIG. In FIG. 5, a state 500 is a state in which an AC power source (not shown) and the power supply apparatus 100 are connected, and the NFC function of the power supply apparatus 100 is invalid. When the power supply apparatus 100 is in the state 500 and the NFC function of the power supply apparatus 100 is enabled using the operation unit 110, the power supply apparatus 100 transitions to the state 501.

  In the state 501, the power supply apparatus 100 makes an inquiry for detecting whether or not the electronic device 200 has the WPT_AFI data 500. When the power supply apparatus 100 is in the state 501 and the NFC function of the power supply apparatus 100 is disabled, the power supply apparatus 100 transitions to the state 500. When the power supply apparatus 100 is in the state 501, when the power supply apparatus 100 receives response data indicating that the electronic device 200 has the WPT_AFI data 500, the power supply apparatus 100 transitions to the state 506. When the power supply apparatus 100 is in the state 501, when the power supply apparatus 100 has not received response data indicating that the electronic device 200 has the WPT_AFI data 500, the power supply apparatus 100 transitions to the state 502.

  In the state 502, the power supply apparatus 100 performs processing for detecting the WPT_RTD data 400. When the power supply apparatus 100 is in the state 502, when the power supply apparatus 100 detects the WPT_RTD data 400, the power supply apparatus 100 transitions to the state 503. When the power supply apparatus 100 has not detected the WPT_RTD data 400, the power supply apparatus 100 maintains the state 502 until the WPT_RTD data 400 is detected.

  In the state 503, the power supply apparatus 100 performs a first authentication process using the detected WPT_RTD data 400. When the power supply apparatus 100 is in the state 502, when the wireless power supply authentication between the power supply apparatus 100 and the electronic device 200 succeeds after the first authentication process is performed, the power supply apparatus 100 transitions to the state 504. . When the power supply apparatus 100 is in the state 503, when an error relating to wireless power supply occurs, the power supply apparatus 100 transitions to the state 502. Examples of errors related to wireless power supply include a communication error related to communication between the power supply apparatus 100 and the electronic device 200, an error related to a foreign object, an error related to the electronic apparatus 200, an authentication error related to authentication of wireless power supply between the power supply apparatus 100 and the electronic apparatus 200, and the like. It is.

  In the state 504, the power supply apparatus 100 performs processing for exchanging status data necessary for wireless power supply with the electronic device 200. When the power supply apparatus 100 is in the state 504, the power supply apparatus 100 receives the power reception status data from the electronic device 200 and transmits the power supply status data to the electronic device 200. When the power supply apparatus 100 is in the state 504 and the status data exchange is completed, the power supply apparatus 100 transitions to the state 505. When the power supply apparatus 100 is in the state 504 and an error related to wireless power supply occurs, the power supply apparatus 100 transitions to the state 502. When it is detected that charging of the electronic device 200 is completed when the power supply apparatus 100 is in the state 504, the power supply apparatus 100 transitions to the state 502.

  In the state 505, the power supply apparatus 100 performs a power supply process for supplying predetermined power to the electronic device 200. When the power supply apparatus 100 is in the state 505 and an error relating to wireless power supply occurs, the power supply apparatus 100 transitions to the state 504. When the power supply apparatus 100 is in the state 505, the power supply apparatus 100 transitions to the state 504 after a predetermined time has elapsed since the start of output of predetermined power.

  In the state 506, the power supply apparatus 100 performs the second authentication process using the WPT_RTD data 400. When the power supply apparatus 100 is in the state 506, after the second authentication process is performed, when the wireless power supply authentication between the power supply apparatus 100 and the electronic device 200 is successful, the power supply apparatus 100 transitions to the state 504. . When the power supply apparatus 100 is in the state 504 and an error related to wireless power supply occurs, the power supply apparatus 100 transitions to the state 502.

(Control processing)
Next, control processing for controlling wireless power feeding of the power feeding apparatus 100 in the first embodiment will be described with reference to the flowchart of FIG. The control process can be realized by the control unit 101 executing a computer program stored in the memory 108.

  In step S <b> 601, the control unit 101 detects whether the NFC function of the power supply apparatus 100 is valid. After it is detected that the NFC function of the power supply apparatus 100 is valid (Yes in S601), the flowchart proceeds to S602. After it is detected that the NFC function of the power supply apparatus 100 is not valid (No in S601), this flowchart ends.

  In step S602, the control unit 101 performs an authentication process described later. After the authentication process is performed, the flowchart proceeds to S603.

  In step S <b> 603, the control unit 101 determines whether the wireless power supply authentication between the power supply apparatus 100 and the electronic device 200 has been successful. When the authentication process is performed in S602, either one of the authentication success flag and the authentication failure flag is set in the memory 108. When the authentication success flag is set in the memory 108, the control unit 101 determines that the wireless power supply authentication is successful (Yes in S603), and the process proceeds to S604. If the authentication failure flag is set in the memory 108, the control unit 101 determines that the wireless power supply authentication has failed (No in S603), and the process proceeds to S607.

  In step S604, the control unit 101 performs status data exchange processing described later. After the status data exchange process is performed, the flowchart proceeds to S605.

  In step S <b> 605, the control unit 101 determines whether the power supply apparatus 100 can supply power to the electronic device 200. When the status data exchange process is performed in S604, either one of the power supply enable flag and the power supply disable flag is set in the memory 108. When the power supply enable flag is set in the memory 108, the control unit 101 determines that the power supply apparatus 100 can supply power to the electronic device 200 (Yes in S605), and the process proceeds to S606. If the power supply disable flag is set in the memory 108, the control unit 101 determines that the power supply apparatus 100 cannot supply power to the electronic device 200 (No in S605), and the process proceeds to S607.

  In step S606, the control unit 101 performs power supply processing described later. After the power supply process is performed, the flowchart returns to S604.

  In step S <b> 607, the control unit 101 deletes the power supply parameters stored in the memory 108, flags related to power supply control, and the like. Thereafter, the flowchart returns to S601.

(Authentication process)
Next, in the first embodiment, the authentication process performed by the control unit 101 in S602 of FIG. 6 will be described using the flowchart of FIG. The authentication process can be realized by the control unit 101 executing a computer program stored in the memory 108.

  The control unit 101 controls the matching circuit 105 so as to set the resonance frequency of the feeding antenna 107 to a predetermined frequency f, and performs the process of S701.

  In step S701, the control unit 101 controls the power supply unit 102 to output communication power. Note that the control unit 101 causes the communication power to be output via the feeding antenna 107 until a process of outputting predetermined power is started. Thereafter, in the flowchart, the process proceeds to S702.

  In order to determine whether or not the authentication between the power supply apparatus 100 and the electronic device 200 is successful, it is necessary to perform at least processing for determining whether or not the electronic device 200 is compatible with the power supply apparatus 100. As processing for determining whether or not the electronic device 200 is compatible with the power supply apparatus 100, there are a first processing and a second processing. The first process is a process of determining whether or not the electronic device 200 is compatible with the power supply apparatus 100 depending on whether or not the electronic device 200 has the WPT_AFI data 500. The second process is a process of determining whether or not the electronic device 200 is compatible with the power supply apparatus 100 by analyzing the identification data of the electronic device 200 stored in the WPT_RTD data 400. The first process and the second process will be described later. The first process can determine whether or not the electronic device 200 is compatible with the power supply apparatus 100 more easily than the second process.

  Therefore, in S702, the control unit 101 controls the first communication unit 106 to transmit inquiry data for inquiring whether or not the electronic device 200 has the WPT_AFI data 500. Thereafter, the flowchart proceeds to S703.

  When the first communication unit 206 receives inquiry data from the power supply apparatus 100, the control unit 201 determines whether or not the WPT_AFI data 500 is stored in the memory 213. When the WPT_AFI data 500 is stored in the memory 213, the control unit 201 causes the first communication unit 206 to transmit response data indicating that the electronic device 200 has the WPT_AFI data 500 to the power supply apparatus 100. Control. When the WPT_AFI data 500 is not stored in the memory 213, the control unit 201 controls the first communication unit 206 so as not to transmit response data to the inquiry data to the power supply apparatus 100. When the WPT_AFI data 500 is not stored in the memory 213, the control unit 201 transmits the response data indicating that the electronic device 200 does not have the WPT_AFI data 500 to the power supply apparatus 100. 206 may be controlled.

  In step S <b> 703, the control unit 101 determines whether the first communication unit 106 has received response data indicating that the electronic device 200 has the WPT_AFI data 500. After it is determined that the first communication unit 106 has received response data indicating that the electronic device 200 has the WPT_AFI data 500 (Yes in S703), the flowchart proceeds to S705. After it is determined that the first communication unit 106 has not received response data to the inquiry data (No in S703), the flowchart proceeds to S704. In addition, after the first communication unit 106 receives response data indicating that the electronic device 200 does not have the WPT_AFI data 500 (No in S703), the process proceeds to S704.

  In step S704, the control unit 101 performs first authentication processing described later. When the first authentication process is performed, the flowchart proceeds to S603 in FIG. Note that after the first authentication process is performed, one of an authentication success flag and an authentication failure flag is set in the memory 108.

  In step S <b> 705, the control unit 101 determines that the electronic device 200 is compatible with the power supply apparatus 100 based on data indicating that the electronic device 200 received by the first communication unit 106 has the WPT_AFI data 500.

  When the electronic device 200 has the WPT_AFI data 500, the control unit 101 determines that the power feeding method supported by the power feeding apparatus 100 matches the power feeding method supported by the electronic device 200, and the electronic device 200 It is determined that the device 200 is compatible with the power supply apparatus 100.

  When the electronic device 200 has the WPT_AFI data 500, the control unit 101 matches the power supply control protocol supported by the power supply apparatus 100 with the power supply control protocol supported by the electronic device 200. It is determined that In this case, the control unit 101 determines that the electronic device 200 is compatible with the power supply apparatus 100.

  After it is determined that the electronic device 200 is compatible with the power supply apparatus 100, the flowchart proceeds to S706.

  In step S706, the control unit 101 performs a second authentication process described later. When the second authentication process is performed, the flowchart proceeds to S603 in FIG. Note that after the second authentication process is performed, one of the authentication success flag and the authentication failure flag is set in the memory 108.

  Note that S702, S703, and S705 in FIG. 7 correspond to the first process.

(Status data exchange process)
Next, in Example 1, the status data exchange process performed by the control unit 101 in S604 of FIG. 6 will be described with reference to the flowchart of FIG. The status data exchange process can be realized by the control unit 101 executing a computer program stored in the memory 108.

  In step S801, the control unit 101 controls the first communication unit 106 to transmit data requesting power reception status data. In this case, in the flowchart, the process proceeds to S802.

  In step S <b> 802, the control unit 101 receives the power reception status data from the electronic device 200 until a predetermined time elapses after the electronic device 200 requests power reception status data. It is determined whether or not. After it is determined that the first communication unit 106 has received the power reception status data from the electronic device 200 (Yes in S802), the flowchart proceeds to S805. Even when a certain time has elapsed since the request for the power reception status data has been made, it is determined that the first communication unit 106 has not received the power reception status data from the electronic device 200 (No in S802). ) In this flowchart, the process proceeds to S803.

  In step S803, the control unit 101 causes the display unit 109 to display data indicating that a communication error has been detected. In this case, the flowchart proceeds to S804.

  In step S <b> 804, the control unit 101 sets a power supply impossible flag in the memory 108. In this case, this flowchart ends, and the process proceeds to S605 in FIG.

  In step S <b> 805, the control unit 101 determines whether charging of the electronic device 200 has been completed using the power reception status data received by the first communication unit 106. After it is determined that charging of the electronic device 200 has been completed (Yes in S805), the flowchart proceeds to S806. After it is determined that charging of the electronic device 200 has not been completed (No in S805), the flowchart proceeds to S807.

  In step S806, the control unit 101 causes the display unit 109 to display data indicating that charging of the electronic device 200 has been completed. Further, the control unit 101 may cause the display unit 109 to display data indicating that the battery 211 is fully charged. In this case, the flowchart proceeds to S804.

  In step S <b> 807, the control unit 101 determines whether an error has occurred in the electronic device 200 using the power reception status data received by the first communication unit 106. For example, the control unit 101 determines whether or not an error has occurred in the electronic device 200 by acquiring error data from the power reception status data of the electronic device 200 and analyzing the error data.

  After it is determined that an error has occurred in the electronic device 200 (Yes in S807), the flowchart proceeds to S808. After it is determined that no error has occurred in the electronic device 200 (No in S807), the flowchart proceeds to S809.

  In step S808, the control unit 101 causes the display unit 109 to display data indicating that an error has occurred in the electronic device 200. Further, the control unit 101 may cause the display unit 109 to display data indicating the type of error that has occurred in the electronic device 200.

  In this case, the flowchart proceeds to S804.

  When a foreign object is placed within the predetermined range 300, the VSWR detected by the detection unit 104 may change abruptly. Therefore, the power supply apparatus 100 performs the process of S809 to determine whether or not a foreign object exists within the predetermined range 300.

  In step S809, the control unit 101 detects whether the VSWR detected by the detection unit 104 has changed by a predetermined value or more. The predetermined value is a threshold value for identifying the presence of a foreign object. When the VSWR detected by the detection unit 104 has changed by a predetermined value or more (Yes in S809), the flowchart proceeds to S810. When the VSWR detected by the detection unit 104 has not changed by a predetermined value or more (No in S809), the process proceeds to S812.

  In step S810, the control unit 101 controls the first communication unit 106 to transmit data for notifying the electronic device 200 that a foreign object has been detected. In this case, in the flowchart, the process proceeds to S811.

  In step S811, the control unit 101 causes the display unit 109 to display data for notifying that a foreign object has been detected. In this case, the flowchart proceeds to S804.

  In step S812, the control unit 101 sets power supply parameters using the power reception status data received by the first communication unit 106. The power supply parameter is a predetermined power value and a predetermined time. For example, the control unit 101 sets a predetermined power value and a predetermined time based on the power requested from the electronic device 200 and the power supply efficiency from the power supply apparatus 100 to the electronic device 200. The power supply efficiency from the power supply apparatus 100 to the electronic device 200 indicates the ratio of the power received by the electronic device 200 to the power output from the power supply apparatus 100. For example, the control unit 101 may set a predetermined power value and a predetermined time based on the remaining capacity of the battery 211. The control unit 101 stores the set power supply parameter in the memory 108. In this case, in the flowchart, the process proceeds to S813.

  In step S813, the control unit 101 controls the first communication unit 106 to transmit power supply status data to the electronic device 200. The control unit 101 generates power supply status data including the power supply parameters set in S812 and data indicating that transmission of predetermined power to the electronic device 200 is started. Furthermore, the control unit 101 controls the first communication unit 106 so as to transmit the generated power supply status data to the electronic device 200. In this case, in the flowchart, the process proceeds to S814.

  When the power supply status data transmitted from the power supply apparatus 100 is stored in the WPT_RTD data 400, the first communication unit 206 receives response data indicating that the power supply status data has been normally written in the WPT_RTD data 400. Send to.

  Therefore, in S814, the control unit 101 determines whether or not the first communication unit 106 has received response data from the electronic device 200 until a certain time has elapsed after the power supply status data is transmitted. To do. After it is determined that the first communication unit 106 has received the response data from the electronic device 200 (Yes in S814), the flowchart proceeds to S816. Even if a certain time has elapsed since the feeding status data was transmitted, after it is determined that the first communication unit 106 has not received the response data from the electronic device 200 (No in S814), this In the flowchart, the process proceeds to S815. Even when the response data received by the first communication unit 106 from the electronic device 200 does not indicate that the power supply status data is not normally written in the WPT_RTD data 400, the process proceeds to S815.

  In step S815, the control unit 101 causes the display unit 109 to display data indicating that a communication error has been detected, as in step S803. In this case, the flowchart proceeds to S804.

  In step S <b> 816, the control unit 101 sets a power supply possible flag in the memory 108. In this case, this flowchart ends, and the process proceeds to S605 in FIG.

  In step S809, the control unit 101 detects whether or not the VSWR detected by the detection unit 104 has changed by a predetermined value or more in order to determine whether or not a foreign object exists within the predetermined range 300. However, it is not limited to this.

  When a foreign object is placed within the predetermined range 300, the current detected by the current detection unit 111 may increase rapidly. Therefore, in step S809, the control unit 101 determines whether or not the current detected by the current detection unit 111 is greater than or equal to a predetermined current value in order to determine whether or not a foreign object exists within the predetermined range 300. May be detected. The predetermined current value is a threshold value for identifying the presence of foreign matter. When the current detected by the current detection unit 111 is equal to or greater than the predetermined current value, the flow chart of FIG. 8 proceeds from S809 to S810 as in the case where the VSWR has changed by a predetermined value or more (Yes in S809). When the current detected by the current detection unit 111 is not equal to or greater than the predetermined current value, the flow chart of FIG. 8 proceeds from S809 to S812 as in the case where the VSWR has not changed by the predetermined value or more (No in S809).

  In addition, when a foreign object is placed within the predetermined range 300, the temperature detected by the temperature detection unit 112 may increase rapidly. Therefore, in step S809, the control unit 101 determines whether or not the temperature detected by the temperature detection unit 112 is equal to or higher than a predetermined temperature in order to determine whether or not a foreign object exists within the predetermined range 300. You may make it detect. The predetermined temperature is a threshold value for identifying the presence of foreign matter. When the temperature detected by the temperature detection unit 112 is equal to or higher than the predetermined temperature, the flow chart of FIG. 8 proceeds from S809 to S810 as in the case where the VSWR changes by a predetermined value or more (Yes in S809). If the temperature detected by the temperature detection unit 112 is not equal to or higher than the predetermined temperature, the flow chart of FIG. 8 proceeds from S809 to S812 as in the case where the VSWR has not changed by the predetermined value or more (No in S809).

(Power supply processing)
Next, in Embodiment 1, the power supply process performed by the control unit 101 in S606 of FIG. 6 will be described using the flowchart of FIG. The power supply process can be realized by the control unit 101 executing a computer program stored in the memory 108.

  In step S <b> 901, the control unit 101 controls the power supply unit 102 to output predetermined power according to the power supply parameter set in step S <b> 812. Further, the control unit 101 controls the timer 101a so as to measure a time elapsed after the predetermined power is output. In this case, in the flowchart, the process proceeds to S902.

  In step S902, the control unit 101 determines whether or not a predetermined time has elapsed since the predetermined power was output, according to the time measured by the timer 101a. When the time measured by the timer 101a is equal to or longer than the predetermined time, the control unit 101 determines that the predetermined time has elapsed since the output of the predetermined power (Yes in S902), and this flowchart is performed in S904. move on. When the time measured by the timer 101a is not equal to or longer than the predetermined time, the control unit 101 determines that the predetermined time has not elapsed since the predetermined power was output (No in S902), and this flowchart is S903. Proceed to

  In S903, the control unit 101 detects whether or not the VSWR detected by the detection unit 104 has changed by a predetermined value or more, as in S809. When the VSWR detected by the detection unit 104 has changed by a predetermined value or more (Yes in S903), the flowchart proceeds to S904. If the VSWR detected by the detection unit 104 has not changed by a predetermined value or more (No in S903), the flowchart returns to S901.

  In step S904, the control unit 101 controls the power supply unit 102 so as to stop outputting predetermined power. In this case, the flowchart proceeds to S905.

  In step S905, the control unit 101 controls the power supply unit 102 so as to output communication power. In this case, the flowchart ends and returns to S604 in FIG.

  In step S903, the control unit 101 detects whether or not the current detected by the current detection unit 111 is equal to or greater than a predetermined current value in order to determine whether or not a foreign object exists within the predetermined range 300. You may make it do. When the current detected by the current detection unit 111 is equal to or greater than a predetermined current value, the flow chart of FIG. 9 proceeds from S903 to S904 as in the case where the VSWR has changed by a predetermined value or more (Yes in S903). If the current detected by the current detection unit 111 is not equal to or greater than the predetermined current value, the flow chart of FIG. 9 returns from S903 to S901, as in the case where the VSWR has not changed more than the predetermined value (No in S903).

  In step S <b> 903, the control unit 101 determines whether the temperature detected by the temperature detection unit 112 is equal to or higher than a predetermined temperature in order to determine whether a foreign object exists within the predetermined range 300. You may make it detect. When the temperature detected by the temperature detection unit 112 is equal to or higher than the predetermined temperature, the flow chart of FIG. 9 proceeds from S903 to S904 as in the case where the VSWR changes by a predetermined value or more (Yes in S903). When the temperature detected by the temperature detection unit 112 is not equal to or higher than the predetermined temperature, the flow chart of FIG. 9 returns from S903 to S901, as in the case where the VSWR has not changed more than the predetermined value (No in S903).

(First authentication process)
Next, in the first embodiment, the first authentication process performed by the control unit 101 in S704 of FIG. 7 will be described using the flowchart of FIG. The first authentication process can be realized by the control unit 101 executing a computer program stored in the memory 108.

  In step S <b> 1001, the control unit 101 controls the first communication unit 106 to transmit data requesting identification data to the electronic device 200 in order to identify the WPT_RTD data 400. In this case, the flowchart proceeds to S1002.

  In S1002, the control unit 101 determines whether or not the WPT_RTD data 400 has been detected. When the first communication unit 106 receives the identification data from the electronic device 200, the control unit 101 acquires the record type name of the electronic device 200 from the identification data of the electronic device 200. Thereafter, the control unit 101 determines whether or not the WPT_RTD data 400 has been detected based on the record type name of the electronic device 200. When the WPT_RTD data 400 is detected (Yes in S1002), the process proceeds to S1003. When the WPT_RTD data 400 is not detected (No in S1002), the flowchart returns to S1001. Note that even when the first communication unit 106 has not received the identification data from the electronic device 200, this flowchart returns to S1001.

  In step S <b> 1003, the control unit 101 analyzes the identification data of the electronic device 200 received by the first communication unit 106 and confirms data included in the identification data of the electronic device 200. In this case, the flowchart proceeds to S1004.

  In step S1004, the control unit 101 detects whether a communication error has occurred in the identification data of the electronic device 200 using the analysis result of the identification data of the electronic device 200 performed in step S1003. When a communication error is detected in the identification data of the electronic device 200 (Yes in S1004), the flowchart proceeds to S1005. When a communication error is not detected in the identification data of the electronic device 200 (No in S1004), the flowchart proceeds to S1007.

  In step S <b> 1005, the control unit 101 causes the display unit 109 to display data indicating that a communication error between the power supply apparatus 100 and the electronic device 200 has been detected. In this case, the flowchart proceeds to S1006.

  In step S <b> 1006, the control unit 101 sets an authentication failure flag in the memory 108. In this case, the flowchart ends, and the process proceeds to S603 in FIG.

  In S1007, the control unit 101 detects whether or not the VSWR detected by the detection unit 104 has changed by a predetermined value or more, similarly to S809. If the VSWR detected by the detection unit 104 has changed by a predetermined value or more (Yes in S1007), the flowchart proceeds to S1008. When the VSWR detected by the detection unit 104 has not changed by a predetermined value or more (No in S1007), the flowchart proceeds to S1009.

  In step S1008, the control unit 101 causes the display unit 109 to display data for notifying that a foreign object has been detected. In this case, the flowchart proceeds to S1006.

  In step S <b> 1009, the control unit 101 determines whether the electronic device 200 is compatible with the power supply apparatus 100 using the analysis result of the identification data of the electronic device 200 performed in step S <b> 1003.

  For example, in step S <b> 1009, the control unit 101 determines whether the power feeding method supported by the power feeding apparatus 100 matches the power feeding method supported by the electronic device 200 based on the analysis result of the identification data of the electronic device 200. Determine whether or not. The control unit 101 determines that the electronic device 200 is compatible with the power supply apparatus 100 when the power supply method supported by the power supply apparatus 100 matches the power supply method supported by the electronic apparatus 200. The control unit 101 determines that the electronic device 200 is not compatible with the power supply device 100 when the power supply method supported by the power supply device 100 and the power supply method supported by the electronic device 200 do not match. To do.

  For example, in step S <b> 1009, based on the analysis result of the identification data of the electronic device 200, the control unit 101 controls the power supply control protocol supported by the power supply apparatus 100 and the power supply control protocol supported by the electronic device 200. It is determined whether or not the method matches. When the power supply control protocol supported by the power supply apparatus 100 matches the power supply control protocol supported by the electronic device 200, the control unit 101 corresponds to the power supply apparatus 100. Is determined. If the power supply control protocol supported by the power supply apparatus 100 does not match the power supply control protocol supported by the electronic apparatus 200, it is determined that the electronic apparatus 200 does not support the power supply apparatus 100. .

  After it is determined that the electronic device 200 is not compatible with the power supply apparatus 100 (No in S1009), the flowchart proceeds to S1010. After it is determined that the electronic device 200 is compatible with the power supply apparatus 100 (Yes in S1009), the flowchart proceeds to S1011.

  In step S <b> 1010, the control unit 101 causes the display unit 109 to display data indicating that an authentication error between the power supply apparatus 100 and the electronic device 200 has been detected. In this case, the flowchart proceeds to S1006.

  In S1011, the control unit 101 determines whether or not the electronic device 200 has the first tag, using the analysis result of the identification data of the electronic device 200 performed in S1003. The control unit 101 determines whether the electronic device 200 has the first tag according to whether or not the identification data of the electronic device 200 includes data indicating that the electronic device 200 has the first tag. It is determined whether or not. When the identification data of the electronic device 200 includes data indicating that the electronic device 200 has the first tag, the control unit 101 determines that the electronic device 200 has the first tag. In this flowchart, the process proceeds to S1012 (Yes in S1011). When the identification data of the electronic device 200 does not include data indicating that the electronic device 200 has the first tag, the control unit 101 determines that the electronic device 200 does not have the first tag. In this flowchart, the process proceeds to S1010 (No in S1011).

  In step S <b> 1012, the control unit 101 sets an authentication success flag in the memory 108. In this case, the flowchart ends, and the process proceeds to S603 in FIG.

  In step S <b> 1007, the control unit 101 detects whether the VSWR detected by the detection unit 104 has changed by a predetermined value or more in order to determine whether a foreign object exists within the predetermined range 300. However, it is not limited to this.

  Therefore, in step S1007, the control unit 101 determines whether or not the current detected by the current detection unit 111 is equal to or greater than a predetermined current value in order to determine whether or not a foreign object exists within the predetermined range 300. May be detected. When the current detected by the current detection unit 111 is equal to or greater than a predetermined current value, the flow chart of FIG. 10 proceeds from S1007 to S1008, as in the case where the VSWR changes by a predetermined value or more (Yes in S1007). When the current detected by the current detection unit 111 is not equal to or greater than the predetermined current value, the flow chart of FIG. 10 proceeds from S1007 to S1009, as in the case where the VSWR has not changed more than the predetermined value (No in S1007).

  In step S <b> 1007, the control unit 101 determines whether the temperature detected by the temperature detection unit 112 is equal to or higher than a predetermined temperature in order to determine whether a foreign object exists within the predetermined range 300. May be detected. When the temperature detected by the temperature detection unit 112 is equal to or higher than the predetermined temperature, the flow chart of FIG. 10 proceeds from S1007 to S1008, as in the case where the VSWR changes by a predetermined value or more (Yes in S1007). When the temperature detected by the temperature detection unit 112 is not equal to or higher than the predetermined temperature, the flow chart of FIG. 10 proceeds from S1007 to S1009, as in the case where the VSWR has not changed more than the predetermined value (No in S1007).

  Note that S1001, S1002, S1003, and S1009 in FIG. 10 correspond to the second process.

(Second authentication process)
Next, in the first embodiment, the second authentication process performed by the control unit 101 in S706 of FIG. 7 will be described using the flowchart of FIG. The second authentication process can be realized by the control unit 101 executing a computer program stored in the memory 108.

  In step S1101, in order to identify the WPT_RTD data 400, the control unit 101 controls the first communication unit 106 to transmit data requesting identification data. In this case, the flowchart proceeds to S1102.

  In step S1102, the control unit 101 determines whether the WPT_RTD data 400 has been detected. When the first communication unit 106 receives the identification data from the electronic device 200, the control unit 101 acquires the record type name of the electronic device 200 from the identification data of the electronic device 200. Thereafter, the control unit 101 determines whether or not the WPT_RTD data 400 has been detected based on the record type name of the electronic device 200. When the WPT_RTD data 400 is detected (Yes in S1102), the process proceeds to S1103. When the WPT_RTD data 400 is not detected (No in S1102), the flowchart returns to S1101. Note that even when the first communication unit 106 has not received the identification data from the electronic device 200, this flowchart returns to S1101.

  In step S <b> 1103, the control unit 101 analyzes the identification data of the electronic device 200 received by the first communication unit 106 and confirms data included in the identification data of the electronic device 200. In this case, the flowchart proceeds to S1104.

  In S1104, the control unit 101 detects whether or not a communication error has occurred in the identification data of the electronic device 200 using the analysis result of the identification data of the electronic device 200 performed in S1103. When a communication error is detected in the identification data of the electronic device 200 (Yes in S1104), the flowchart proceeds to S1105. When a communication error is not detected in the identification data of the electronic device 200 (No in S1104), the flowchart proceeds to S1106.

  In step S <b> 1105, the control unit 101 causes the display unit 109 to display data indicating that an error in communication between the power supply apparatus 100 and the electronic device 200 has been detected. In this case, this flowchart ends, and the process proceeds to S1001 in FIG.

  In S1106, similarly to S809, the control unit 101 detects whether or not the VSWR detected by the detection unit 104 has changed by a predetermined value or more. If the VSWR detected by the detection unit 104 has changed by a predetermined value or more (Yes in S1106), the process proceeds to S1107. If the VSWR detected by the detection unit 104 has not changed by a predetermined value or more (No in S1106), the process proceeds to S1108.

  In step S1107, the control unit 101 causes the display unit 109 to display data for notifying that a foreign object has been detected. In this case, this flowchart ends, and the process proceeds to S1001 in FIG.

  In step S1108, the control unit 101 determines whether the electronic device 200 has the first tag using the analysis result of the identification data of the electronic device 200 performed in step S1103. The control unit 101 determines whether the electronic device 200 has the first tag according to whether or not the identification data of the electronic device 200 includes data indicating that the electronic device 200 has the first tag. It is determined whether or not. When the identification data of the electronic device 200 includes data indicating that the electronic device 200 has the first tag, the control unit 101 determines that the electronic device 200 has the first tag. In this flowchart, the process proceeds to S1110 (Yes in S1108). When the identification data of the electronic device 200 does not include data indicating that the electronic device 200 has the first tag, the control unit 101 determines that the electronic device 200 does not have the first tag. In this flowchart, the process proceeds to S1109 (No in S1108).

  In step S <b> 1109, the control unit 101 causes the display unit 109 to display data indicating that an authentication error between the power supply apparatus 100 and the electronic device 200 has been detected. In this case, this flowchart ends, and the process proceeds to S1001 in FIG.

  In step S <b> 1110, the control unit 101 sets an authentication success flag in the memory 108. In this case, the flowchart ends, and the process proceeds to S603 in FIG.

  In step S1106, the control unit 101 detects whether or not the VSWR detected by the detection unit 104 has changed by a predetermined value or more in order to determine whether or not a foreign object exists within the predetermined range 300. However, it is not limited to this.

  Therefore, in S1106, the control unit 101 determines whether or not the current detected by the current detection unit 111 is equal to or greater than a predetermined current value in order to determine whether or not a foreign object exists within the predetermined range 300. May be detected. When the current detected by the current detection unit 111 is equal to or greater than a predetermined current value, the flow chart of FIG. 11 proceeds from S1106 to S1107, as in the case where the VSWR changes by a predetermined value or more (Yes in S1106). If the current detected by the current detection unit 111 is not equal to or greater than the predetermined current value, the flow chart of FIG. 11 proceeds from S1106 to S1108, as in the case where the VSWR has not changed more than the predetermined value (No in S1106).

  In step S <b> 1106, the control unit 101 determines whether the temperature detected by the temperature detection unit 112 is equal to or higher than a predetermined temperature in order to determine whether a foreign object exists within the predetermined range 300. May be detected. When the temperature detected by the temperature detection unit 112 is equal to or higher than the predetermined temperature, the flow chart of FIG. 11 proceeds from S1106 to S1107 as in the case where the VSWR has changed by a predetermined value or more (Yes in S1106). When the temperature detected by the temperature detection unit 112 is not equal to or higher than the predetermined temperature, the flow chart of FIG. 11 proceeds from S1106 to S1108, as in the case where the VSWR has not changed more than the predetermined value (No in S1106).

  As described above, the power supply apparatus 100 according to the first embodiment performs authentication for wireless power supply between the power supply apparatus 100 and the electronic device 200 according to communication with the electronic device 200, and the electronic device according to the authentication result. 200 is controlled to perform wireless power feeding. Therefore, the power supply apparatus 100 can perform wireless power supply to the electronic device 200 that has been successfully authenticated for wireless power supply, and can protect the electronic device 200 that has not been successfully authenticated for wireless power supply.

  Further, the power supply apparatus 100 detects the state of the electronic device 200 according to communication with the electronic device 200, and determines whether or not to perform wireless power supply to the electronic device 200 according to the detected state of the electronic device 200. I tried to control it. Therefore, the power supply apparatus 100 can protect the electronic device 200 that cannot detect the power reception state by performing wireless power supply to the electronic device 200 that can detect the power reception state. Furthermore, the power supply apparatus 100 can protect the electronic device 200 in which the error has occurred by performing wireless power supply to the electronic device 200 in which no error has occurred. Furthermore, the power supply apparatus 100 can protect the electronic device 200 that has been charged by performing wireless power supply to the electronic device 200 that has not been fully charged.

  In addition, when the power supply apparatus 100 supplies predetermined power to the electronic device 200, the power supply apparatus 100 charges the electronic device 200 with at least one of the detection unit 104, the current detection unit 111, and the temperature detection unit 112. Detected whether an error related to power supply occurred. When at least one of the detection unit 104, the current detection unit 111, and the temperature detection unit 112 detects that an error relating to charging or power supply has occurred in the electronic device 200, the output of predetermined power is stopped and the electronic device 200 is stopped. To communicate with. Thereby, the electric power feeding to the electronic device 200 can be appropriately controlled.

  Furthermore, the power supply apparatus 100 performs authentication with the electronic device 200 by the first authentication process or the electronic device 200 by the second authentication process depending on whether the electronic device 200 has the WPT_AFI data 500 or not. Added control of whether authentication is performed.

  As a result, the power supply apparatus 100 can perform authentication between the power supply apparatus 100 and the electronic device 200 by an appropriate process.

  Therefore, the power supply apparatus 100 according to the first embodiment can appropriately perform wireless power supply to the electronic device 200 in accordance with communication between the power supply apparatus 100 and the electronic device 200.

  In the first embodiment, the power supply apparatus 100 supplies predetermined power to the electronic device 200 using the power supply antenna 107, and performs communication between the first communication unit 106 and the electronic device 200 using the power supply antenna 107. However, it is not limited to this. For example, the power supply apparatus 100 may have a configuration in which an antenna for supplying predetermined power to the electronic device 200 and an antenna for performing communication between the first communication unit 106 and the electronic device 200 are separately provided. Good.

  In addition, the electronic device 200 receives power from the power feeding apparatus 100 using the power receiving antenna 203 and performs communication between the power feeding apparatus 100 and the first communication unit 206 using the power receiving antenna 203. Shall not be allowed. For example, the electronic apparatus 200 may have a configuration in which an antenna for receiving power from the power supply apparatus 100 and an antenna that performs communication between the power supply apparatus 100 and the first communication unit 206 are separately provided.

  Although the first communication unit 106 has been described as operating as a reader / writer in the NFC standard, it is not limited to this. For example, the first communication unit 106 may operate as P2P (Peer To Peer) in the NFC standard.

  The predetermined power supply method may be a power supply method other than the power supply method using the magnetic field resonance method. For example, the predetermined power supply method may be a power supply method corresponding to the “Qi” standard defined in WPC (Wireless Power Consortium).

  Further, the predetermined power supply method may be a power supply method corresponding to a standard defined in WPT (Wireless Power Transmission).

  Further, the predetermined power supply method may be a power supply method corresponding to a standard defined in CEA (Consumer Electronics Association).

  Further, the predetermined power feeding method may be a power feeding method corresponding to a standard defined in A4WP.

  When the power feeding apparatus 100 outputs any one of communication power and predetermined power via the power feeding antenna 107, the control unit 101 sets the resonance frequency of the power feeding antenna 107 to the predetermined frequency f. Was to be controlled. However, it is not limited to this.

  For example, when the power feeding apparatus 100 outputs communication power via the power feeding antenna 107, the control unit 101 is matched so as to set the resonance frequency of the power feeding antenna 107 to 13.56 [MHz] which is a predetermined frequency f. The circuit 105 may be controlled. However, when the power feeding apparatus 100 outputs predetermined power via the power feeding antenna 107, the control unit 101 controls the matching circuit 105 so as to set the resonance frequency of the power feeding antenna 107 to a frequency different from the predetermined frequency f. May be. The frequency different from the predetermined frequency f may be, for example, 6.78 [MHz] or 100 to 250 [KHz].

(Other examples)
The power supply apparatus according to the present invention is not limited to the power supply apparatus 100 described in the first embodiment. For example, the power supply apparatus according to the present invention can be realized by a system including a plurality of apparatuses. The electronic device according to the present invention is not limited to the electronic device 200 described in the first embodiment. For example, the electronic device according to the present invention can be realized by a system including a plurality of devices.

  The various processes and functions described in the first embodiment can also be realized by a computer program. In this case, the processing according to the present invention can be executed by a computer program, and various functions described in the first embodiment are realized.

  Needless to say, the computer program according to the present invention may realize various processes and functions described in the first embodiment by using an OS (Operating System) running on the computer.

  The computer program according to the present invention is read from a computer-readable recording medium and executed by the computer. As the computer-readable recording medium, a hard disk device, an optical disk, a CD-ROM, a CD-R, a memory card, a ROM, or the like can be used. The computer program according to the present invention may be provided from an external device to a computer via a communication interface and executed by the computer.

100 power supply device 200 electronic device

Claims (10)

A power feeding device,
Power supply means for wirelessly supplying power to electronic devices;
Communication means for communicating with the electronic device;
Control means for controlling the communication means so as to transmit data for confirming whether or not the electronic device has data for identifying a wireless power supply application to the electronic device;
The control unit may perform either a first authentication process or a second authentication process different from the first authentication process depending on whether the electronic device has data for identifying a wireless power supply application. Do one,
When the authentication between the power supply apparatus and the electronic device is completed by performing any one of the first authentication process and the second authentication process, the control unit wirelessly supplies power to the electronic device. The power supply device controls the power supply means to start the operation. The first authentication process includes a process of determining whether or not the electronic device is compatible with a power supply method supported by the power supply apparatus.
The power supply according to claim 1, wherein the second authentication process does not include a process of determining whether or not the electronic device is compatible with a power supply method supported by the power supply apparatus. apparatus. The first authentication process includes a process of determining whether or not the electronic device is compatible with a power supply control protocol supported by the power supply apparatus,
The second authentication process does not include a process of determining whether or not the electronic device is compatible with a power supply control protocol supported by the power supply apparatus. The electric power feeder as described in.   2. The control unit according to claim 1, wherein when the electronic device has data for identifying a wireless power supply application, the control unit performs the second authentication process without performing the first authentication process. 4. The power feeding device according to any one of items 1 to 3.   2. The control unit according to claim 1, wherein when the electronic device does not have data for identifying a wireless power supply application, the control unit performs the first authentication process without performing the second authentication process. 5. The power feeding device according to any one of items 1 to 4.   6. The data for identifying a wireless power supply application is AFI (Application Family Identifier) data defined in NFC (Near Field Communication) standard. Power supply device.   The control means performs the first authentication process when an error relating to wireless power feeding is detected when the second authentication process is being performed. The power feeding device according to any one of the above.   The power supply apparatus according to claim 1, wherein the communication unit communicates with the electronic device based on an NFC (Near Field Communication) standard. Communicating with an electronic device;
Transmitting data for checking whether or not the electronic device has data for identifying a wireless power supply application to the electronic device;
One of the first authentication process and the second authentication process different from the first authentication process is performed depending on whether the electronic device has data for identifying a wireless power supply application. Steps,
A step of starting wireless power feeding to the electronic device when authentication of the power feeding device and the electronic device is completed by performing any one of the first authentication processing and the second authentication processing; A power supply method. Communicating with an electronic device;
Transmitting data for checking whether or not the electronic device has data for identifying a wireless power supply application to the electronic device;
One of the first authentication process and the second authentication process different from the first authentication process is performed depending on whether the electronic device has data for identifying a wireless power supply application. Steps,
A step of starting wireless power feeding to the electronic device when authentication of the power feeding device and the electronic device is completed by performing any one of the first authentication processing and the second authentication processing; A computer program that causes a computer to execute.