JP6380217B2 - Charging system, power transmitter, communication device, power transmission control program, and communication control program - Google Patents

Description

The present invention is a charging system, the power transmitting device, communications device, to a power transmission control program及 beauty communication control program.

  Conventionally, wireless charging technology has been provided for charging an electric toothbrush or a cordless telephone system slave unit. Until now, due to the fact that each manufacturer has developed a power transmitter and a power receiver with a special design for each product, there is no compatibility between the power transmitter and the power receiver between manufacturers or between devices. For example, it was difficult to charge a power receiver built in the electric toothbrush of Company B from a power transmitter of Company A's shaving. Against this background, several standardization organizations have been established, and the development of standard specifications and certification tests for ensuring compatibility between power transmitters and power receivers is proceeding (see Non-Patent Document 1).

System Description Wireless Power transfer Volume I: Low power Part1: Interface Definition Version

  It is ideal that devices that meet the certification test of these standardization organizations can be charged without problems, but in reality, compatibility between the devices that meet the certification test, i.e. There are problems such as failure to start, and interruption without being completed normally even when charging is started. Examples of compatibility problems include, for example, a problem that charging cannot be started due to a malfunction of metal foreign object detection (first problem), or noise between a power transmitter and a power receiver due to noise generated by a device incorporating a power receiver. There is a problem (second problem) in which charging is stopped due to communication obstruction.

  The first problem can be solved by adjusting the metal foreign object detection threshold for each power receiver model. The second problem can be solved by stopping the function that causes noise. However, it is indispensable that the charging standard conformity information transmitted from the power receiver to the power transmitter by the protocol established by the standardization organization includes model information indicating the model of the power receiver necessary for solving the first problem. In addition, model information may not be included, and information on what functions are operating in the power receiver necessary for solving the second problem is not included. Therefore, for the first problem, measures have been taken to avoid false detection by setting a metal foreign object detection threshold value high (sensitivity is lowered). There was a problem that it was difficult to detect the power metal. As for the second problem, there is only a method for alerting the user by describing it in an instruction manual, for example, and there is a problem that sufficient measures cannot be taken.

The present invention has been made in view of the above, and its object is charging system which can appropriately to charge the power receiver from the power transmitting device, the power transmitting device, communications device, the power transmission control program及 And providing a communication control program.

According to the first aspect of the present invention, the power transmitter transmits power when the charging start condition is satisfied. When the charging start condition is satisfied, the power receiver transmits charging standard compliant information that is information compliant with the charging standard to the power transmitter. Here, the power receiver transmits information different from the charging standard compliant information regarding the own device to the power transmitter through a different path different from the path for transmitting the charging standard compliant information. Then, the power transmitter controls the operation related to power transmission based on information different from the charging standard compliant information regarding the received power receiver. Further, when an abnormality occurs in the operation related to power transmission , the power transmitter causes the communication device to transmit error log information indicating the content of the abnormality that has occurred to the center. When the center receives the error log information from the communication device, the center transmits re-log information for eliminating the abnormality indicated by the received error log information to the communication device. At least one of the power transmitter and the power receiver performs replogging using the replog information transmitted from the center and received by the communication device.

  That is, when the charging start condition is satisfied, not only the charging standard compliant information that is information compliant with the charging standard, but also other information different from the charging standard compliant information about the power receiver (information not included in the charging standard compliant information). The power receiver also transmits to the power transmitter. Thereby, the power transmitter can acquire various information not included in the charging standard compliant information from the power receiver, and can appropriately perform operations related to power transmission by utilizing the acquired information. . As a result, charging from the power transmitter to the power receiver can be performed appropriately.

1 is an overall configuration diagram showing an embodiment of the present invention. Sequence diagram (1) Sequence diagram (2) Sequence diagram (part 3) Sequence diagram (part 4) Sequence diagram (part 5) Sequence diagram (Part 6) Flow chart showing processing of power transmitter (part 1) Flow chart showing processing of power transmitter (part 2) Flow chart showing processing of power transmitter (part 3) Flow chart showing processing of power transmitter (part 4) Flow chart showing processing of power receiver Flow chart showing processing of communication device Flow chart showing center processing Diagram showing the principle of metallic foreign object detection Figure showing a message prompting you to stop the function The figure which shows the message which demands the transmission operation of error log information

  Hereinafter, an embodiment in which the present invention is applied to a wireless charging system mounted on a vehicle (automobile) will be described with reference to the drawings. Note that wireless charging is contactless charging and wireless charging. The wireless charging system 1 includes a power transmitter 2, a power receiver 3, a communication device 4, a display 5, and a center (server) 6. In the present embodiment, the power receiver 3 is assumed to be a power receiver built in, for example, a smartphone (portable multi-function telephone) that can be carried by the user. Moreover, as the power transmitter 2, for example, a power transmitter built in a stand on which a smartphone is placed is assumed. That is, it is assumed that the user carries a smart phone and gets on the vehicle, and a battery (for example, a secondary battery such as a lithium ion battery) built in the smart phone is charged in the passenger compartment. In the present embodiment, an in-vehicle data communication module (DCM: Data Communication Module) is assumed as the communication device 4. The data communication module is a device that is connected to a car navigation ECU (Electronic Control Unit) and a multi-display, and allows online service information and the like to be viewed on a multi-display screen. Furthermore, in this embodiment, although the power transmission device 2 and the communication device 4 are assumed to have separate configurations, for example, the function of the power transmission device 2 is incorporated in the communication device 4 so that the power transmission device 2 and the communication device 4 are incorporated. And may be integrated.

  The power transmitter 2 includes a power transmission control circuit, a power transmission antenna (power transmission coil), and the like. The power transmitter 2 includes a microcomputer, and controls transmission of electric power by the microcomputer executing a power transmission control program. When the power transmitter 2 is brought into the vehicle compartment and placed on the pedestal, and the distance between the power transmitter 2 and the power receiver 3 is less than a predetermined distance (a chargeable distance), the charging start condition is established. Is detected, and transmission of power (wireless charging power) to the power receiver 3 is started. As a method for transmitting power from the power transmitter 2 to the power receiver 3, there are an electromagnetic induction method, an electromagnetic resonance method, a radio wave method, and the like. The electromagnetic induction method is a method in which an electromotive force is generated in the power receiving side antenna by causing a current to flow through the power transmitting side antenna to generate a magnetic flux. The electromagnetic resonance method is a method that uses an electromagnetic field resonance phenomenon. The radio wave system is a system for converting electric power into electromagnetic waves and transmitting and receiving. The power transmitter 2 has a data communication function for performing data communication with the communication device 4. The power transmitter 2 and the communication device 4 perform data communication based on a data communication standard such as CAN (Controller Area Network) or LIN (Local Interconnect Network).

  The power receiver 3 includes a power receiving antenna (power receiving coil), a power receiving control circuit, and the like. The power receiver 3 includes a microcomputer, and controls the power reception by the microcomputer executing a power reception control program. The power receiver 3 receives the power transmitted from the power transmitter 2, and stores the received power in a battery. Similarly to the power transmitter 2 described above, the power receiver 3 has a data communication function for performing data communication with the communication device 4. The power receiver 3 and the communication device 4 perform data communication based on a data communication standard such as Bluetooth (registered trademark), WiFi (Wireless Fidelity), or the like.

  The communication device 4 performs data communication with the center 6 through a wide area communication line (such as a mobile phone line or an Internet line). The communication device 4 performs data communication with the power transmitter 2 and the power receiver 3. The communication device 4 includes a microcomputer, and controls data communication with the power transmitter 2, the power receiver 3, and the center 6 by executing a communication control program.

The display 5 is mounted in a part that can be viewed by the user in the vehicle interior. When a display command is input from the power transmitter 2, the display 5 displays a screen corresponding to the input display command.
The center 6 performs data communication with the communication device 4 through a wide area communication line. The center 6 has a microcomputer, and controls the reception of error log information, the transmission of replog information, and the like by the microcomputer executing a control program.

  Next, the operation of the above configuration will be described with reference to FIGS. Here, the power transmitter 2 and the communication device 4 are connected to each other by a CAN line, perform data communication conforming to the CAN data communication standard, and the power receiver 3 and the communication device 4 are both connected. A description will be given on the assumption that data communication conforming to the Bluetooth data communication standard is performed. 2 to 7 show the overall processing flow. 8 to 11 show processing performed by the power transmitter 2 according to the power transmission control program. FIG. 12 shows processing performed by the power receiver 3 according to the power reception control program. FIG. 13 shows processing performed by the communication device 4 according to the communication control program. FIG. 14 shows processing performed by the center 6 using a control program.

  The power transmitter 2 first starts an operation called Ping (A1). Specifically, the power transmitter 2 intermittently operates the power transmission antenna and waits for reception of wireless charging standard compliant information from the power receiver 3. The wireless charging standard conforming information is a message conforming to a standardized standard, and the wireless charging standard conforming information includes information such as the standard version and maximum power.

  Here, when the smartphone is brought into the passenger compartment, the power receiver 3 enters the Bluetooth communication range. When the communication device 4 determines that the smartphone is brought into the vehicle interior and the power receiver 3 has entered the Bluetooth communication range (C1: YES), the communication device 4 transmits a Bluetooth line connection request to the power receiver 3 and receives the Bluetooth line. Connection is made with the electric appliance 3 (C2). Accordingly, when the power receiving device 3 determines that the device has entered the Bluetooth communication range (B1: YES), the power receiving device 3 connects the Bluetooth line with the communication device 4 (B2).

  Next, the communication device 4 transmits a model information request to the power receiving device 3 (C3, see FIG. 1 (1)). When the power receiver 3 determines that the model information request has been received from the communication device 4 (B3: YES), the power receiver 3 transmits the model information to the communication device 4 (see B4, FIG. 1 (2), power receiver side transmission procedure). When the communication device 4 determines that the model information has been received from the power receiver 3 (C4: YES), the communication device 4 temporarily stores the received model information (C5), and waits for the reception of the model information request from the power transmitter 2. (C6).

Next, when the smartphone is placed on the table, the distance between the power transmitter 2 and the power receiver 3 becomes less than a predetermined distance (the charging start condition is satisfied).
When the power receiver 3 determines that the distance to the power transmitter 2 is less than the predetermined distance (B5: YES), the power receiver 3 transmits wireless charging standard compliant information to the power transmitter 2 (see B6, FIG. 1 (3)). . When determining that the wireless charging standard conforming information has been received from the power receiver 3 (A2: YES), the power transmitter 2 transmits a model information request to the communication device 4 (A3, refer to FIG. 1 (4)). (A4). When the communication device 4 determines that the model information request has been received from the power transmission device 2 (C6: YES, communication device side reception procedure), it has been received from the power reception device 3 and temporarily stored before this. The model information is transmitted to the power transmitter 2 (C7, see FIG. 1 (5), communication device side transmission procedure). The model information includes information indicating the model of the power receiver 3. That is, when the model information request is transmitted from the power transmitter 2 to the power receiver 3 via the communication device 4, the model information is transmitted from the power receiver 3 to the power transmitter 2 via the communication device 4. As described above, the model information is transmitted from the power receiver 3 to the power transmitter 2 through a different path from the path through which the wireless charging standard compliant information is transmitted from the power receiver 3 to the power transmitter 2.

  When the power transmitter 2 determines that the model information has been received from the communication device 4 (A4: YES, power transmitter-side receiving procedure), the power transmitter 2 sets a threshold value for detecting a metal foreign object (A5, power transmission operation control procedure). Here, the power transmitter 2 performs metal foreign object detection for the following reason. When a metal foreign object is sandwiched between the power transmitter 2 and the power receiver 3, an eddy current is generated in the metal foreign object due to the magnetic flux generated by the power transmitter 2, and the user may be burned. Therefore, when it is determined that the metal foreign object is sandwiched between the power receiver 3 and the power transmitter 2, it is necessary to stop charging.

  In this case, the power transmitter 2 performs metal foreign object detection based on the principle shown in FIG. That is, the power transmitter 2 calculates the difference between the power transmitted by the power transmitter 2 and the power received by the power receiver 3. As shown in FIG. 15A, if a metal is sandwiched between the power transmitter 2 and the power receiver 3 (if there is a metal foreign object if metal is present), the power transmitted by the power transmitter 2 And the power received by the power receiver 3 are equal to or greater than a certain value (threshold). On the other hand, as shown in FIG. 15B, if the metal is not sandwiched between the power transmitter 2 and the power receiver 3 (if there is no metal and no metal foreign matter), the power transmitter 2 transmits power. The difference between the received power and the power received by the power receiver 3 becomes less than a certain value (threshold value). If the calculated value is equal to or greater than a certain value, the power transmitter 2 determines that a metal is sandwiched between the power transmitter 2 and the power receiver 3, and if the calculated value is not equal to or greater than the certain value ( If it is less than a certain value), it is determined that no metal is sandwiched between the power transmitter 2 and the power receiver 3. In such a determination method, in addition to the eddy current loss generated in the metal foreign object, the power transmitter 2 and the power receiver 3 such as the copper loss and iron loss of the power transmission antenna and the eddy current loss generated in the metal parts such as the copper foil of the printed board. Since the internal loss of itself is also included, there is a possibility of erroneous determination unless the threshold is adjusted (corrected) in consideration of the internal loss. In this case, since the power transmitter 2 calculates the difference between the power transmitted by the power transmitter 2 and the power received by the power receiver 3, the internal loss on the power transmitter side can be corrected by measuring and storing in advance. However, it is necessary to dynamically switch the internal loss on the power receiver side according to the model to be charged. Under such circumstances, the power transmitter 2 needs to set a threshold value for detecting a metallic foreign object in order to avoid erroneous determination.

  When the power transmission device 2 sets a metal foreign object detection threshold, the power transmission device 2 performs metal foreign object detection using the set threshold (A6). The power transmitter 2 calculates the difference between the power transmitted by itself and the power received by the power receiver 3. When the power transmitter 2 determines that the calculated value is not a certain value or more and no metal is sandwiched between the power transmitter 2 and the power receiver 3 (A7: NO), the initial value of the output power of the antenna driver is determined. Is set (A8), and the transmission (charging, feeding) of the power (wireless charging power) to the power receiver 3 is started (A9, refer to FIG. 1 (6)). When starting to transmit power, the power transmitter 2 performs the first process and the second process in parallel (A10, A11). At this time, when the power receiver 3 receives the power transmitted from the power transmitter 2, the power receiver 3 transmits target power information indicating the target power to the power transmitter 2 (see B7, FIG. 1 (7)).

  On the other hand, the power transmitter 2 determines that the difference between the power transmitted by itself and the power received by the power receiver 3 is equal to or greater than a certain value, and that metal is sandwiched between the power transmitter 2 and the power receiver 3. Then (A7: YES), as shown in FIG. 3, error log information indicating that there is a metallic foreign object is transmitted to the communication device 4 (A12). The error log information includes information such as the internal temperature of the power transmitter 2 and model information of the power receiver 3. When determining that the error log information has been received from the power transmitter 2, the communication device 4 transmits the received error log information to the center 6 (see FIG. 1 (12)).

  When the power transmission device 2 proceeds to the first process, the power transmission device 2 transmits a power reception state information request to the communication device 4 (see A21, FIG. 1 (8)), and waits for reception of the power reception state information from the communication device 4. (A22). When determining that the power receiving state information request has been received from the power transmitter 2 (C8: YES), the communication device 4 transmits the received power receiving state information request to the power receiving device 3 (C9, see FIG. 1 (9)). ). When the power receiver 3 determines that the power receiving state information request has been received from the communication device 4 (B8: YES), the power receiving device 3 transmits the power receiving state information to the communication device 4 (see B9, FIG. 1 (10), the power receiver side). Sending procedure). The power receiving state information includes information indicating a function during operation of the power receiver 3 (for example, LED lighting), a battery level, an internal temperature of the power receiver 3, and the like. When the communication device 4 determines that it has received power reception status information from the power receiver 3 (C10: YES, communication device side reception procedure), it transmits the received power reception status information to the power transmission device 2 (C11, FIG. 1). (11) Reference, communication device side transmission procedure). In other words, the power receiving status information request is transmitted from the power transmitter 2 to the power receiver 3 via the communication device 4, so that the power receiving status information is transmitted from the power receiver 3 to the power transmitter 2 via the communication device 4. Is done. As described above, the power receiving status information is also transmitted from the power receiver 3 to the power transmitter 2 through a different path from the path through which the wireless charging standard compliant information is transmitted from the power receiver 3 to the power transmitter 2 in the same manner as the above-described model information. Sent.

  When determining that the power receiving state information has been received from the power receiver 3 (A22: YES, transmitter side reception procedure), the power transmitter 2 determines whether the second process is being continued (A23). If the power transmitter 2 determines that the second process is not being continued (finished) (A23: NO), the first process is terminated. On the other hand, when determining that the second process is being continued (A23: YES), the power transmitter 2 determines whether or not the charge inhibition function is operating (A24, power transmission operation control procedure). The charge inhibition function is a function that may inhibit wireless charging between the power transmitter 2 and the power receiver 3 (for example, lighting of an LED used for flashing a camera function of a smartphone). The power transmitter 2 holds in advance a table indicating a combination of the model information of the power receiver 3 and the charge inhibition function, and determines whether the charge inhibition function is in operation by referring to the table. .

When determining that the charge inhibition function is in operation (A24: YES), the power transmitter 2 transmits a charge inhibition function stop request command to the communication device 4 as shown in FIG. 4 (A25). When determining that the charge inhibition function stop request command has been received from the power transmitter 2 (C12: YES), the communication device 4 transmits the received charge inhibition function stop request command to the power receiver 3 (C13). When the power receiver 3 determines that the charge inhibition function stop request command has been received from the communication device 4 (B10: YES), as shown in FIG. 16, a message M1 prompting the user to stop the corresponding function (XX) (Please stop the × function) is displayed on the display unit of the smartphone (B11). The power transmitter 2 transmits error log information indicating that the charge inhibition function is operating to the communication device 4. Also in this case, when the communication device 4 determines that the error log information has been received from the power transmitter 2, the communication device 4 transmits the received error log information to the center 6.
If the center 6 is configured to manage the charge inhibition function, the communication device 4 does not need to transmit error log information indicating that the charge inhibition function is in operation to the center 6.

  Next, the power transmitter 2 determines the possibility of load fluctuation (A26). When determining that there is no possibility of load fluctuation (A26: NO), the power transmitter 2 relaxes the overcurrent determination condition and the communication error determination condition (A27). On the other hand, when determining that there is a possibility of load fluctuation (A26: YES), the power transmitter 2 returns the overcurrent determination condition and the communication error determination condition to the initial conditions (A28). Then, the power transmitter 2 returns to the above step A21 and repeats the above processing until it is determined that the second processing is finished.

  In parallel with this, when the power transmitter 2 proceeds to the second process, it determines whether or not the charge stop condition is satisfied (A31). The power receiver 3 transmits a charge stop command to the power transmitter 2 when the battery capacity reaches 100% (full charge) or when the internal temperature of the power receiver reaches a predetermined temperature. When the power transmitter 2 determines that the charge stop command has been received from the power receiver 3, the power transmitter 2 determines that the charge stop condition is satisfied. The power transmitter 2 also determines that the charging stop condition is satisfied when the smartphone is removed from the table and data communication is interrupted. Furthermore, the power transmitter 2 can be charged even if the data communication is interrupted when the distance between the self-device 2 and the power receiver 3 exceeds a predetermined distance, noise occurs, or the load suddenly fluctuates. Is determined to have been established.

  When the power transmitter 2 determines that the charging stop condition is not satisfied (A31: NO) and determines that the target power information is received from the power receiver 3 (A32: YES), the PID (Proportional) of the output power of the antenna driver is determined. -Integral-Derivative) control is performed (A33). The power receiver 3 transmits data indicating that the deviation is 0.5 W to the power transmitter 2 when the current received power is 1 W, for example, and 1.5 W of received power is required. When it is determined that the data indicating that the deviation is 0.5 W is received from the power receiver 3, the power transmitter 2 determines that the charging stop condition is satisfied for the control to increase the transmitted power so that the deviation is zero. Do until you do.

  On the other hand, when determining that the charge stop condition is satisfied (A31: YES), the power transmitter 2 determines whether or not the charge stop is normal (A34, power transmission operation control procedure). If the battery capacity of the power receiver 3 reaches 100% (full charge) or if the charge stop condition is satisfied because the smartphone is removed from the table, the power transmitter 2 is normally stopped. A determination is made (A34: YES), and the second process is terminated. On the other hand, if the power transmitter 2 is in a case where the internal temperature of the power receiver 3 reaches a predetermined temperature, noise is generated, or the load suddenly fluctuates, a communication abnormality occurs and a charging stop condition is satisfied. Then, it is determined that it is not a normal charge stop (abnormal charge stop) (A34: NO), and as shown in FIG. 5, error log information indicating an abnormal charge stop is transmitted to the communication device 4. (A35). Also in this case, when the communication device 4 determines that the error log information has been received from the power transmitter 2, the communication device 4 transmits the received error log information to the center 6. For example, when the transmitter 2 repeats charging start, communication interruption, charging resumption, communication interruption, or when a bit break of the demodulated waveform occurs, data transmission is caused by noise generation or sudden load fluctuation. It is determined that an interruption has occurred and a communication error has occurred.

  When the center 6 determines that the error log information has been received from the communication device 4 (D1: YES), the center 6 analyzes the received error log information and generates replog information (D2). Then, the center 6 transmits the generated replog information to the communication device 4 (see D3, FIG. 1 (13)). The reprogram information includes software for resolving errors. The center 6 may transmit the automatically generated reprogram information to the communication device 4 by executing a program for automatically generating reprogram information. For example, an engineer (engineer or the like) analyzes the error. The generated replog information may be transmitted to the communication device 4.

  When the power transmitter 2 determines that the reprogram information has been received from the communication device 4 and determines that the reprogram interrupt from the communication device 4 has occurred, the power transmitter 2 stops power transmission (A41), and sends a reprogram start command to the communication device 4 (A42). When determining that the replog start command has been received from the power transmitter 2, the communication device 4 transmits the received replog start command to the power receiver 3. When the power receiver 3 determines that the reprogram start command has been received from the communication device 4, the power receiver 3 displays a message informing the start of the reprogram on the display unit of the smartphone. The power transmitter 2 may display a message notifying the start of the reprogram on the display 5 by outputting a display command to the display 5.

  The power transmitter 2 starts the reprogramming by receiving the reprogram information transmitted from the center 6 via the communication device 4. When the power transmitter 2 determines that the replog has been completed (A44), it transmits a replog end command to the communication device 4 (A45). When determining that the replog end command has been received from the power transmitter 2, the communicator 4 transmits the received replog end command to the power receiver 3. When the power receiver 3 determines that the reprogram end command has been received from the communication device 4, the power receiver 3 displays a message notifying the end of the reprogram on the display unit of the smartphone. The power transmitter 2 may display a message notifying the end of the reprogram on the display 5 by outputting a display command to the display 5.

  In the series of processes described above, the wireless charging standard compliance information is transmitted from the power receiver 3 to the power transmitter 2, but the model information and the route are different from the path through which the wireless charging standard compliance information is transmitted. Power receiving status information is transmitted from the power receiver 3 to the power transmitter 2. For this reason, the power transmitter 2 uses the model information and the power receiving state information received through a different route from the route for receiving the wireless charging standard compliance information to set a threshold value for detecting a metallic foreign object or output power of the antenna driver. PID control can be performed, and power can be appropriately transmitted to the power receiver 3.

  4 and 5 described above, the error log information indicating that the charging inhibition function is operating or abnormal charging is stopped is transmitted to the communication device 4 after the power transmission device 2 starts power transmission. By transmitting the error log information, the communicator 4 transmits the error log information to the center 6. When the power transmitter 2 does not start transmitting power, the error log information is transmitted to the communicator 4. The communication device 4 cannot transmit the error log information to the center 6. In this regard, the power receiver 3 determines that it cannot receive power from the power transmitter 2 even though the distance to the power transmitter 2 is less than a predetermined distance (the charging start condition is satisfied). Then, as shown in FIG. 17, together with an error log information transmission button that can be pressed by the user, a message M2 prompting the user to perform an error log information transmission operation (please press the error log information transmission button) is displayed on the smartphone. To display. In this case, when the power receiver 3 determines that the error log information transmission button has been pressed, the power receiver 3 transmits error log information indicating that power cannot be received from the power transmitter 2 to the communication device 4. Then, the communication device 4 transmits the received error log information to the center 6.

As described above, according to the present embodiment, the following operational effects can be obtained.
In the charging system 1, a path for performing data communication between the power transmitter 2 and the power receiver 3 via the communication device 4 is provided, and when the distance between the power transmitter 2 and the power receiver 3 is less than a predetermined distance, Not only the wireless charging standard compliant information is transmitted from the power receiver 3 to the power transmitter 2, but also the model information and the power receiving status information are transmitted from the power receiver 3 to the power transmitter 2 via the communication device 4. . Thereby, the power transmitter 2 can acquire various information not included in the wireless charging standard compliant information from the power receiver 3, and appropriately perform the operation related to power transmission by using the acquired information. be able to.

  By transmitting the model information from the power receiver 3 to the power transmitter 2 via the communication device 4, the power transmitter 2 determines whether or not a foreign object exists between the power receiver 3 and the power receiver 3. Therefore, it is possible to appropriately set the threshold value for detecting the metallic foreign object. Whether or not a function that can inhibit charging on the side of the power receiver 3 is operating because the power receiving state information is transmitted from the power receiver 3 to the power transmitter 2 via the communication device 4. It is possible to determine whether or not an abnormal charging stop has occurred. If it is determined that a function that can inhibit charging on the power receiver 3 side is in operation, the user can be prompted to stop the function.

  By providing the communication device 4 that can communicate with the center 6, the power transmission device 2 obstructs charging on the power reception device 3 side, indicating that there is a foreign object between itself and the power reception device 3. Error log information indicating that the function to be obtained is in operation or that an abnormal charging stop has occurred can be transmitted to the center 6 via the communication device 4. In addition, the power receiver 3 is configured so that the user can press the error log information transmission button even if the power from the power transmitter 2 cannot be received even though the distance to the power transmitter 2 is less than a predetermined distance. The error log information indicating that the power from the power transmitter 2 cannot be received can be transmitted to the center 6 via the communication device 4. Furthermore, the power transmitter 2 or the power receiver 3 can resolve the error by receiving the reprogram information from the center 6 via the communication device 4 and performing the reprogram. Moreover, not only can the error be eliminated, but also a case where a new function is added to the power receiver 3 (version upgrade) can be handled.

The present invention is not limited to the above-described embodiment, and can be modified or expanded as follows.
You may apply to the charging system of uses other than a vehicle.
You may apply not only to the structure which transmits electric power wirelessly but to the structure which transmits electric power by wire.
The device incorporating the power receiver 3 may be other than a smartphone, and the device incorporating the power transmitter 2 may be other than a table. The communication device 4 may be a dedicated device for performing data communication with the center 6.
The power transmitter 2 and the communication device 4 may be configured to perform data communication based on a data communication standard other than CAN or LIN between the two. The power receiver 3 and the communication device 4 may communicate with each other via Bluetooth, The configuration may be such that data communication conforming to a data communication standard other than WiFi is performed.

  In the drawings, 1 is a charging system, 2 is a power transmitter, 3 is a power receiver, 4 is a communicator, and 6 is a center.

Claims (16)

When the charging start condition is satisfied, the power transmitter (2) that transmits power,
When the charging start condition is satisfied, a power receiver (3) that transmits charging standard compliant information that is information compliant with the charging standard to the power transmitter;
A communication device (4) capable of communicating with the center (6) ,
The power receiver transmits different information different from the charging standard compliant information about the own device to the power transmitter via a different path from the path for transmitting the charging standard compliant information,
The power transmitter controls an operation related to power transmission based on information different from the charging standard compliant information related to the received power receiver, and when an abnormality occurs in an operation related to power transmission, the generated abnormality Error log information indicating the content of the message is transmitted from the communication device to the center,
When the error log information is received from the communication device, the center transmits re-log information that resolves the abnormality indicated by the received error log information to the communication device.
At least one of the power transmitter and the power receiver performs reprogress using reprogress information transmitted from the center and received by the communicator . (1). The charging system according to claim 1,
The power receiver receives at least one of model information indicating a model of the device and power receiving status information indicating a power receiving state as information different from the charging standard compliant information regarding the device. The charging system characterized by transmitting to. In the charging system according to claim 1 or 2,
The power transmitter sets, as an operation related to power transmission, a metal foreign object detection threshold value for determining whether or not a foreign object exists between the power receiver and the power receiver. . In the charging system according to any one of claims 1 to 3,
The power transmission system determines whether or not a function capable of inhibiting charging on the power receiver side is operating as an operation related to power transmission. The charging system according to claim 4,
When the power transmitter determines that a function that can inhibit charging on the power receiver side is in operation, the power transmitter prompts the user to perform a stop operation to stop the function. In the charging system according to any one of claims 1 to 5,
The power transmitter determines whether or not an abnormal charging stop has occurred as an operation related to power transmission. In the charging system according to any one of claims 1 to 6 ,
Before SL power transmitter as the abnormal operation related to power transmission of the power is generated, if it is determined that foreign matter is present between the power receiver and the own vessel, the communication device error log information indicating that The charging system, wherein the charging system is transmitted to the center. In the charging system according to any one of claims 1 to 7,
When the power transmitter determines that an operation related to power transmission is abnormal and determines that a function that can inhibit charging on the power receiver side is operating, error log information indicating that fact is sent from the communication device. A charging system, wherein the charging system is transmitted to the center. In the charging system according to any one of claims 1 to 8,
When the power transmitter determines that an abnormal charging stop has occurred as an abnormality has occurred in the operation related to power transmission, the transmitter transmits error log information indicating that fact to the center. To charge system. In the charging system according to any one of claims 1 to 9,
When an abnormality occurs in an operation related to power reception, the power receiver causes the communication device to transmit error log information indicating the content of the abnormality that has occurred to the center. The charging system according to claim 10, wherein
The power receiver urges a user to perform a transmission operation for transmitting error log information to the center . The charging system according to any one of claims 1 to 11,
The charging system is characterized in that the power transmitter transmits power wirelessly . When the charging start condition is satisfied, the charging standard conforming information that is information conforming to the charging standard is received from the power receiver (3), and the power transmitter (2) transmits power to the power receiver.
Information different from the charging standard compliant information regarding the power receiver is received from the power receiver via a different path from the path for receiving the charging standard compliant information, and the charging standard regarding the received power receiver is received. Controls the operation related to power transmission based on information different from the compliance information. When an abnormality occurs in the operation related to power transmission, error log information indicating the content of the error that occurred is sent from the communication device to the center. A power transmitter that performs reprogress using reprolog information transmitted from the center and received by the communicator . When the charging start condition is satisfied, charging standard conforming information that is information conforming to the charging standard is received from the power receiver (3), and the microcomputer of the power transmitter (2) that transmits power to the power receiver is connected to the microcomputer.
Another information different from the charging standard compliant information related to the power receiver, the transmitter side receiving procedure for receiving from the power receiver through a different path different from the path for receiving the charging standard compliant information,
A power transmission operation control procedure for controlling an operation related to power transmission based on information different from the charging standard compliant information related to the power receiver received by the power transmitter side reception procedure;
When an abnormality occurs in the operation related to power transmission, a procedure for transmitting error log information indicating the content of the abnormality that has occurred from the communication device to the center,
The power transmission control program characterized Rukoto is performed and a procedure for re-program by using a re-program information received in the communication unit is transmitted from the center. A communicator (4) capable of data communication with both a power transmitter (2) and a power receiver (3),
The information different from the charging standard compliant information that is information compliant with the charging standard related to the power receiver, and the path different from the path from which the charging standard compliant information is transmitted from the power receiver to the power transmitter. Another path that is received from the power receiver and that is different from the charging standard compliant information regarding the received power receiver, and that is different from the path through which the charging standard compliant information is transmitted from the power receiver to the power transmitter. And transmitting to the power transmitter . In the microcomputer of the communication device (4) capable of data communication with both the power transmitter (2) and the power receiver (3) ,
The information different from the charging standard compliant information that is information compliant with the charging standard related to the power receiver, and the path different from the path from which the charging standard compliant information is transmitted from the power receiver to the power transmitter. The communication device side receiving procedure to receive from the power receiver,
Different information different from the charging standard compliant information related to the power receiver received by the communication device side reception procedure, and another path different from the path through which the charging standard compliant information is transmitted from the power receiver to the power transmitter And a communication control program for transmitting to the power transmitter .

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