JP2005110421A - Power supply system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply system capable of supplying power to power receiving apparatuses of different kinds by using one power transmission apparatus, and making it possible to pay charges owing to the power receiving apparatuses. <P>SOLUTION: The power supply system comprises the power transmission apparatus 1 including a primary coil 11 and a primary circuit 10 that supplies the primary coil with pulse voltage obtained by switching direct-current voltage obtained by rectifying and smoothing commercial power, and a portable telephone 2 including a secondary coil 12 magnetically coupled with the primary coil 11 and a secondary circuit 13 that rectifies and smoothes induced voltage induced in the secondary coil 12. The power supply system is provided with a signal transmission control circuit (signal transmission controlling means) 19 that transmits information signals among the power transmission apparatus 1, the portable telephone 2, and a server 5 connected with the power transmission apparatus 1, and a power supply control circuit (power adjusting means) 18 that adjusts transmitted power according to the power of the portable telephone 2 indicated by an information signal transmitted from the portable telephone 2 to the power transmission apparatus 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a power supply system that supplies power to an electronic device, and more particularly to a power supply system that supplies power to a mobile electronic device such as a mobile phone, a notebook computer, a digital camera, or an electronic toy. is there.

  Examples of conventional power supply systems for mobile electronic devices are shown in FIGS. First, FIG. 9 is an external view showing the external appearance of a mobile phone equipped with a conventional power supply system and a terminal contact type charger (AC adapter) of the mobile phone. In FIG. 9, reference numeral 101 denotes a mobile phone, and reference numeral 102 denotes a holder of a terminal contact type dedicated charger (AC adapter) for charging a storage battery built in the mobile phone 101. An AC adapter 102a (integrated with an AC plug) and a cord 102b are attached to the holder 102 of the AC adapter. By inserting the AC plug 102a (integrated with an AC plug) into an outlet provided on a wall surface or the like, commercial power is supplied. (AC100V) is supplied to the AC adapter 102a. Then, the AC adapter 102a converts the supplied AC 100V into a DC voltage used for charging the storage battery of the mobile phone 101, and passes the cord 102b, the AC adapter holder 102, and the power receiving electrode in contact with the power receiving electrode of the mobile phone 101. Then, the storage battery of the mobile phone 101 is charged with this DC voltage. Further, this DC voltage can be directly used as a driving power source for the mobile phone 101.

  Next, FIG. 10 is an external view showing the external appearance of a notebook computer equipped with another conventional power supply system and a dedicated charger (AC adapter) for the notebook computer. In FIG. 10, reference numeral 103 denotes a notebook personal computer, and reference numeral 104 denotes a dedicated charger (AC adapter) for charging a storage battery built in the notebook personal computer 103. An AC plug 104a and cords 104b and 104c are attached to the AC adapter 104, and a commercial power supply (AC 100V) is supplied to the AC adapter 104 through the cord 104b by inserting the AC plug 104a into an outlet provided on a wall surface or the like. Is done. Then, the AC adapter 104 converts the supplied AC 100V into a DC voltage used for charging the storage battery of the notebook computer 103, and supplies the DC voltage to the notebook computer 103 via the cord 104c. Charge. Further, this DC voltage can be directly used as a driving power source for the notebook computer 103.

  Next, FIG. 11 is an external view showing the external appearance of a shaver equipped with another conventional power supply system and a non-contact dedicated charger (AC adapter) of the shaver. In FIG. 11, reference numeral 105 denotes a shaver, and reference numeral 106 denotes a non-contact type dedicated charger (AC adapter) for charging a storage battery built in the shaver 105. An AC plug 106 a and a cord 106 b are attached to the AC adapter 106, and commercial power (AC 100 V) is supplied to the AC adapter 106 through the cord 106 b by inserting the AC plug 106 a into an outlet provided on a wall surface or the like. . The AC adapter 106 once converts the supplied AC 100V into a DC voltage, and then switches to supply the DC voltage used for charging to the storage battery of the shaver 105 by a non-contact power supply method using magnetic coupling. Further, this DC voltage can be directly used as a driving power source for the shaver 105.

In addition, the secondary coil is disposed at the bottom of the main body, the primary coil is disposed below the main body mounting portion of the charger, and the main body is placed on the main body mounting portion of the charger. In a non-contact charging apparatus in which a primary coil disposed under a subordinate and a secondary coil disposed at a bottom portion of a main body are magnetically coupled to charge a storage battery in the main body, the main body housing includes a secondary coil. A plurality of housing parts divided by a longitudinal plane are combined, and among the plurality of housing parts, one housing part has a bottom wall continuously formed on the outer peripheral wall thereof, and 2 on the inner surface of the bottom wall. There is a non-contact charging device in which a secondary coil is provided and the outer surface of the bottom wall serves as a contact surface with the main body mounting portion of the charger during charging (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2001-16789

  However, as shown in FIGS. 9 to 11, charging of each electronic device such as the mobile phone 101, the notebook computer 103, and the shaver 105 requires a dedicated AC adapter for each electronic device, and other AC adapters are used. There is a problem that many AC adapters are overflowing in the home because they cannot be used, that is, the AC adapters are not compatible with each other. In addition, it is necessary to carry a dedicated AC adapter for the electronic device in the destination or in a moving public facility, which greatly impairs the portability of the mobile electronic device.

  Moreover, in the prior art described in Patent Document 1, there is no worry that a step is generated between housing parts joined at the bottom of the housing, and the distance between the primary coil and the secondary coil can be kept constant. Therefore, although a stable charging current can be supplied to the electronic device of the main body, the type of electronic device that can be charged by the non-contact charging device is only one type, and a plurality of types of electronic devices can be charged. There was a problem that you can't.

  By the way, when paying for food and drink at a cash register after eating and drinking at a restaurant such as a coffee shop or restaurant, or when paying for accommodation at the front desk when checking out at an accommodation facility such as a hotel or inn, Many customers may come to the front at the same time. In that case, there was a problem that the cash register and the front desk were crowded and it was not possible to smoothly settle the payment. In addition, there is a problem that it is necessary for employees of restaurants and accommodation facilities to wait at the cash register or the front desk for the checkout work.

  In addition, when purchasing a train ticket with an automatic ticket vending machine, it is necessary to search for a fare to the destination from the fare table and purchase it, which is troublesome. Furthermore, in that case, it was accompanied by the trouble of preparing cash (changes). Also, by purchasing a prepaid card in advance and passing this prepaid card through an automatic ticket gate provided at the ticket gate of the station, the boarding fee corresponding to the boarding section can be calculated from the balance recorded on this prepaid card. There is also a payment method that is drawn, but such prepaid cards are not shared by each railroad company, and when transferring the routes of multiple railroad companies, you have many types of prepaid cards and use them separately There was a problem that had to be.

  In view of the above points, the present invention provides a power supply system that can supply power to different types of power receiving devices with a single power transmission device, and that can perform charge settlement using the power receiving devices. For the purpose.

  In order to achieve the above object, the present invention provides a power supply system that supplies electric power to a power receiving device from a power transmission device to which a commercial power supply is applied, in the power transmission device, the power receiving device, and the power transmission device. Signal transmission control means for transmitting an information signal to / from a connected external device is provided. If it does in this way, the electric power supply system which can perform charge settlement using the said receiving device is realizable.

  Further, the present invention provides an electric power supply system that supplies electric power from a power transmission device to which a commercial power supply is supplied to a power receiving device in an electrically non-contact manner, and the external device connected to the power transmission device, the power receiving device, and the power transmission device And a signal transmission control means for transmitting an information signal between the power receiving apparatus and a power adjusting means for adjusting the transmission power according to the power of the power receiving apparatus indicated by the information signal transmitted from the power receiving apparatus to the power transmission device. Is. If it does in this way, while being able to supply electric power to a different kind of receiving device with one power transmission device, an electric power supply system which can perform charge settlement using the receiving device can be realized.

  In addition, the present invention provides a power transmission device including a primary side coil, and a primary side circuit that supplies a pulse voltage obtained by switching a DC voltage obtained by rectifying and smoothing a commercial power source to the primary side coil, and the primary side A power supply system comprising: a secondary coil that is magnetically coupled to a side coil; and a secondary device that rectifies and smoothes an induced voltage induced in the secondary coil. Signal transmission control means for transmitting an information signal between a device and an external device connected to the power transmission device, and power transmission according to the power of the power receiving device indicated by the information signal transmitted from the power receiving device to the power transmission device And an electric power adjusting means for adjusting electric power. If it does in this way, while being able to supply electric power to a different kind of receiving device with one power transmission device, an electric power supply system which can perform charge settlement using the receiving device can be realized.

  Also, for example, a carrier wave oscillating unit that periodically applies a carrier wave to the primary side coil, and an information signal that is modulated and transmitted from the power receiving device in response to the carrier wave is received via the primary side coil. A first demodulating unit for demodulating and demodulating the demodulated information signal to the power adjusting unit and the external device, and modulating the carrier wave from the carrier wave oscillating unit with the information signal applied from the external device to the primary side coil A first modulation means for transmitting via the first side circuit, and a carrier detection means for detecting the carrier transmitted to the secondary coil, and a clock signal required for modulation is extracted from the carrier And when the carrier wave detecting means detects the carrier wave, the carrier wave is modulated on the basis of the clock signal by the information signal of the power receiving device, and the secondary side coil is passed through. The secondary side circuit has second modulation means for transmitting and the second demodulation means for receiving and demodulating the information signal transmitted from the first modulation means via the secondary coil. good.

  According to this configuration, the power transmitted from the power transmission device can be adjusted according to the information signal related to the power of the power received by the power transmitted from the power received device and demodulated by the first demodulating unit. Since the transmission from the power transmission device can be performed using a carrier wave, a power source used for a carrier wave oscillation circuit for transmitting the information signal, a control circuit for transmitting the information signal, or the like is used. It becomes unnecessary for the secondary circuit, and the circuit of the power receiving device can be simplified. An information signal can be transmitted from the external device to the power receiving device via the first modulation unit and the second demodulation unit, and an information signal can be transmitted from the power receiving device to the external device via the second modulation unit and the first demodulation unit. it can. That is, an information signal can be transmitted and received between the external device and the power receiving device.

  In addition, for example, information is supplied between the external device and the power receiving device via the power transmission device by the signal transmission control unit while supplying power to the power receiving device placed close to the power transmission device. If the signal is an information signal necessary for the settlement of charges, and has the function of performing the settlement using the power receiving device, it is possible to supply power to different types of power receiving devices and prepare cash for fee settlement And there is no need to go to a place where payment is made, such as a cash register or the front desk.

  In addition, for example, the power transmission device is incorporated in a table top provided in a store, supplies power to the power receiving device placed on the table top, and the external device is the store server. The information signal transmitted between the server and the power receiving device via the power transmission device by the signal transmission control means is a commodity price eaten at the store and / or a commodity price purchased at the store, and It may be an information signal necessary for the settlement of the service fee received from the store, and may have a function of performing the settlement using the power receiving device.

  In this way, power can be supplied to different types of power receiving devices at each table in the store, and checkout processing can be performed at each table. There will be no waiting for crowds. In addition, there is no need for the store clerk to wait at the cash register for payment.

  Further, for example, the power transmission device is incorporated in an appliance provided in an accommodation facility, and supplies power to the power receiving device placed in proximity to the appliance, and the external device is a server of the accommodation facility, The information signal transmitted between the server and the power receiving device via the power transmission device by the signal transmission control means is a product price eaten and eaten at the accommodation facility, and / or a product price purchased at the accommodation facility, and It may be an information signal necessary for the settlement of the service fee received from the accommodation facility, and may have a function of performing the settlement using the power receiving device.

  In this way, it is possible to supply power to different types of power receiving devices in each room of the accommodation facility and to perform checkout processing in each room. There is an advantage that employees do not have to wait at the front desk in preparation for payment.

  Further, for example, the power transmission device is incorporated in a ticket issuing machine connected to a station server, supplies power to the power receiving device placed in the vicinity of the ticket issuing machine, and the external device is the server. An adjustment of a ticket purchased by the ticket issuing machine, in which an information signal transmitted between the server and the power receiving device via the power transmission device by the signal transmission control means includes personal information of a user of the power receiving device It is preferable that the information signal is necessary for the payment, and has a function of performing the settlement using the power receiving device.

  If it does in this way, when the said receiving device has a rechargeable battery, it is possible to prevent exhaustion of the rechargeable battery of the said receiving device since it performs supplementary charge when buying a ticket. Moreover, since there is no payment in cash, there is no need to carry cash, and there is an advantage that a ticket can be purchased even if there is no carry. Also, there is no need to have multiple prepaid cards for each railway company.

  Further, for example, the power transmission device is incorporated in an automatic ticket gate provided at a ticket gate of a station, and supplies power to the power receiving device placed in the vicinity of the automatic ticket gate, and the external device is connected to the station ticket gate. A boarding fee, wherein the information signal transmitted between the server and the power receiving device via the power transmission device by the signal transmission control means includes a departure station information and personal information of a user of the power receiving device. It is an information signal necessary for the settlement of the information, and preferably has a function of performing the settlement using the power receiving device.

  In this way, it is possible to get on the transportation means of the station without the troublesome work of searching for the boarding fee to the destination and purchasing a ticket. Moreover, since there is no payment in cash, there is an advantage that the transportation means can be used even if there is no need to carry the cash. In addition, there is no need to have a prepaid card for each means of transportation.

  According to the present invention, in a power supply system that supplies power to a power receiving device from a power transmission device to which a commercial power source is supplied in an electrically non-contact manner, the power transmission device, the power receiving device, and an external device connected to the power transmission device And a signal transmission control means for transmitting an information signal between the power receiving apparatus and a power adjusting means for adjusting the transmission power according to the power of the power receiving apparatus indicated by the information signal transmitted from the power receiving apparatus to the power transmission device. Therefore, it is possible to realize a power supply system that can supply power to different types of power receiving devices with a single power transmission device and that can perform charge settlement using the power receiving devices.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an electrical configuration of a power supply system according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a power transmission device that supplies electric power, and the power transmission device 1 is incorporated in a plurality of table top plates (not shown) provided in a restaurant or the like. Reference numeral 2 denotes a mobile phone which is a power receiving device, and is assumed to be placed on a top plate of a table in which the power transmission device 1 is incorporated.

  The power transmission device 1 is supplied with commercial power (AC 100 V) from an outlet or the like provided on the wall of the store, and the supplied AC 100 V is supplied to the primary circuit 10. Then, it is rectified and smoothed by the power supply circuit 17 inside the primary side circuit 10 and once converted into a DC voltage. Then, the DC voltage is switched by the power supply control circuit (power adjusting means) 18 to be converted into a pulse voltage, which is applied to the primary coil 11, thereby passing through the secondary coil 12 of the mobile phone 2. Electric power is supplied to the mobile phone 2 by a non-contact transmission method, and the mobile phone 2 is charged by the secondary circuit 13 and the charge control circuit 14.

  Here, the principle of the non-contact transmission method will be described with reference to FIG. FIG. 2 is a diagram for explaining a schematic configuration inside the power transmission device 1 and the mobile phone 2 shown in FIG. 1, (a) shows the entire power transmission device 1 and the mobile phone 2, and (b) shows a coil. The part is shown enlarged. In FIG. 2, the same parts as those in FIG. As illustrated in FIG. 2A, the power transmission device 1 includes a primary side circuit 10 and a primary side coil 11, and the mobile phone 2 includes a secondary side coil 12, a secondary side circuit 13, and a charge control circuit 14. It has.

  The primary side circuit 10 performs full-wave rectification and smoothing of the supplied AC 100 V, temporarily converts it to a DC voltage, and then applies a pulse voltage obtained by switching the DC voltage to the primary coil 11. As shown in FIG. 2B, the primary side coil 11 and the secondary side coil 12 form a transformer in which the primary side core (ferrite) 15 and the secondary side core (ferrite) 16 are magnetically coupled. When a switched pulse voltage is applied to the primary side coil 11, a voltage corresponding to the turn ratio between the primary side coil 11 and the secondary side coil 12 is applied to the secondary side coil 12 by magnetic coupling. Induced.

  Then, the induced voltage is full-wave rectified by the secondary side circuit 13 and a smoothed DC voltage is applied to the charging control circuit 14, and the charging control circuit 14 charges a storage battery (not shown) with the applied DC voltage. To do. In this way, non-contact power supply from the power transmission device 1 to the mobile phone 2 is performed. The DC voltage can be directly used as a driving power source for the mobile phone 2.

  Further, not only power but also various information signals are transmitted and received between the power transmission device 1 and the mobile phone 2 by the above-described contactless transmission method. The power transmission device 1 has a function of recognizing the power of the mobile phone 2 based on the information signal transmitted from the mobile phone 2 placed on the power transmission device 1 and transmitting the necessary power to the mobile phone 2. doing. Therefore, not only the mobile phone 2 but also other electronic devices having different power required for charging can be charged by one power transmission device 1.

  For example, an electronic device having a storage battery such as a digital camera, a video camera, or a PDA can be similarly charged. Further, as shown in FIG. 1, the power transmission device 1 includes light emitting diodes LED1 and LED2 (hereinafter simply referred to as LED1 and LED2) that indicate an input state of AC 100V, a power supply state to a power receiving device, and the like. The functions and operations of the LEDs 1 and 2 will be described later.

  As shown in FIG. 1, the power transmission device 1 is connected to a store server (external device) 5 via a network 6 in the store, and the server 5 receives customer order information from a POS terminal 4 held by a store clerk or the like. Etc. are transmitted. The network 6 may be wireless. When the settlement processing request button 20 of the power transmission device 1 is pressed, a product price and / or a store customer who eats and drinks at the store with the table including the power transmission device 1 including the pressed settlement processing request button 20 pressed. The payment information signal necessary for the payment of the product price purchased at the store and / or the service charge received from the store is transmitted by the signal transmission control circuit (signal transmission control means) 19 of the power transmission device 1 by the above-described contactless transmission method. The data is transmitted / received between the server 5 and the mobile phone 2 via the power transmission device 1. Then, the settlement is performed by the mobile banking function of the cellular phone 2 based on the settlement information signal transmitted and received between the server 5 and the cellular phone 2.

  FIG. 3 is a block diagram illustrating an electrical configuration of the power transmission device and the mobile phone illustrated in FIGS. 1 and 2. 3, the same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted. In FIG. 3, commercial power (AC100V) is supplied to the power transmission device 1 from the outside, and the supplied AC100V is full-wave rectified by the rectifier circuit 21 in the primary side circuit 10 and then from the coil L1 and the capacitor C1. Is smoothed by a smoothing circuit and converted into a DC voltage. A pulse voltage obtained by switching the DC voltage by the switching circuit 22 is applied to the primary coil 11 via the transistors TR11, TR12, TR13. The rectifier circuit 21, the coil L1, the capacitor C1, and the switching circuit 22 correspond to the power supply circuit 17 shown in FIG.

  The transistors TR11, TR12, and TR13 are all NPN type transistors, and the collectors are all connected to the output terminal of the switching circuit 22. The emitter of the transistor TR11 is connected to one end of the primary side coil 11, and the other end of the primary side coil 11 is connected to the ground. Further, the primary coil 11 has taps a, b, and c in order from the far end from the coil end connected to the ground, that is, in order from the one with the larger number of turns, and the emitter of the transistor TR12 is connected to the tap a. The emitter of the transistor TR13 is connected to the tap b. Further, the tap c is a first corresponding to the signal transmission control circuit 19 shown in FIG. 1 of the power transmission control IC (power adjustment means, signal transmission control means) 24 that adjusts the transmission power of the power transmission device 1 and transmits and receives information signals. A demodulation circuit (first demodulation means) 36, a carrier wave oscillation circuit (carrier wave oscillation means) 37, and a first modulation circuit (first modulation means) 38 are connected. The first demodulation circuit 36, the carrier wave oscillation circuit 37, and the first modulation circuit 38 correspond to the signal transmission control circuit 19 shown in FIG.

  The bases of the transistors TR11, TR12, and TR13 are connected to the power switching circuit 32 of the power transmission control IC 24, respectively. The power transmission control IC 24 includes an LED display circuit 31, a power switching circuit 32, a power transmission availability determination circuit 33, a power amount determination circuit 34, a full charge determination circuit 35, a first demodulation circuit 36, a carrier wave oscillation circuit 37, and a first modulation circuit 38. In order to reduce the size and thickness of the power transmission device 1, an IC chip is formed. The function and operation of each circuit will be described later. The LED display circuit 31, the power switching circuit 32, the power transmission availability determination circuit 33, the power amount determination circuit 34, the full charge determination circuit 35, and the transistors TR11, TR12, and TR13 correspond to the power supply control circuit 18 shown in FIG. To do. Further, the transistors TR11, TR12, TR13 may be other switching elements such as MOSFETs, selector switches, or the like.

  The pulse voltage switched by the switching circuit 22 is also applied to the transformer 23, converted into a predetermined voltage by the transformer 23, rectified by the rectifier circuit 25, and smoothed by the smoothing circuit including the coil L2 and the capacitor C2. And converted to a DC voltage. This DC voltage is supplied to each control circuit and the like of the primary side circuit 10 as a power source Vcc for controlling the primary side circuit 10.

  Further, the collectors of NPN transistors TR1 and TR2 are connected to the power source Vcc, the emitter of the transistor TR1 is connected to the anode of the LED1 via the current limiting resistor R1, and the cathode of the LED1 is connected to the ground. On the other hand, the emitter of the transistor TR2 is connected to the anode of the LED 2 via the current limiting resistor R2, and the cathode of the LED 2 is connected to the ground. The bases of the transistors TR1 and TR2 are connected to the LED display circuit 31 of the power transmission control IC 24.

  With such a configuration, when the LED display circuit 31 turns on the transistor TR1, the LED1 emits light, and when the transistor TR2 is turned on, the LED2 emits light. However, the LED 1 has a function of emitting red, yellow, green, purple and orange according to a signal from the LED display circuit 31 by a lighting control circuit (not shown), and the LED 2 similarly emits red and green. It has a function to do. The transistors TR1 and TR2 may be other switching elements such as MOSFETs.

  Next, the mobile phone 2 side will be described. A smoothing capacitor C4 and a rectifier circuit 41 are connected to both ends of the secondary coil 12, and the induced voltage induced in the secondary coil 12 is full-wave rectified by the rectifier circuit 41, and then the coil L3 and the capacitor It is smoothed by a smoothing circuit comprising C3 and converted to a DC voltage. The DC voltage is applied to a power-on reset circuit (carrier wave detection means) 44, a voltage clamp circuit 46, and a regulator 47 of a power reception control IC (signal transmission control means) 42 that performs power reception control of the secondary side circuit 13.

  The power-on reset circuit 44 determines that there is a request for an information signal from the power transmission device 1 by detecting a DC voltage converted from a carrier wave transmitted from the primary side circuit 10 described later, and resets the power reception control IC 42. This is a circuit for starting transmission of an information signal. The voltage clamp circuit 46 is a circuit for clamping the converted DC voltage to a predetermined voltage to prevent voltage breakdown of each circuit, and the regulator 47 charges the converted DC voltage. It is a circuit for converting to a predetermined voltage to be used and supplying it to the charging control circuit 14. The power reception control IC 42 further includes a clock extraction circuit (clock extraction means) 43, a second modulation circuit (second modulation means) 45, and a second demodulation circuit (second demodulation means) connected to the secondary coil 12. 48, and performs signal processing of information signals transmitted and received via the primary side coil 11 and the secondary side coil 12. The power reception control IC 42 is formed as an IC chip for reducing the size and thickness of the mobile phone 2.

  Next, the power supply operation of the power transmission device 1 and the mobile phone 2 having such a configuration will be described with reference to FIG. FIG. 4 is a flowchart showing the power supply operation of the power transmission device 1. The power transmission device 1 starts operation when AC 100 V is supplied. First, when AC 100 V is input, the power supply Vcc for control is supplied to the power transmission control IC 24, so that the LED display circuit 31 turns on the LED 1 in red and turns off the LED 2 (step S1). Then, the carrier wave oscillation circuit 37 outputs a predetermined carrier wave at regular intervals (step S2), and determines whether or not the power receiving device is placed on the power transmission device 1 (step S3). A method for determining whether or not this power receiving device is placed will be described below.

  The carrier wave output from the carrier wave oscillation circuit 37 is given to the tap c of the primary side coil 11, and when the mobile phone 2 is placed on the power transmission device 1, the magnetically coupled secondary side coil 12 is applied. Is transmitted. The carrier wave transmitted to the secondary coil 12 is rectified and smoothed by the rectifier circuit 41, the coil L3, and the capacitor C3 and converted to a DC voltage. The DC voltage obtained by converting the carrier wave is detected by the power-on reset circuit 44 to recognize that the carrier wave has been transmitted. The clock extraction circuit 43 connected to the secondary coil 12 extracts a clock signal necessary for modulation from the carrier wave, and the second modulation circuit 45 is “power receiving device” which is information of the mobile phone 2. A modulated wave obtained by modulating a carrier wave based on the “code indicating that”, “power consumption information”, and “full charge information” is applied to the secondary coil 12. As a modulation method at this time, a phase modulation method is used in which the carrier wave is intensity-modulated periodically and 0/1 information is expressed by the phase change information of the signal. In this way, since the clock signal necessary for modulation is extracted from the carrier wave transmitted from the power transmission device 1, it is not necessary to have a transmission circuit in the mobile phone 2 which is a power receiving device. Since the driving power of the modulation circuit 45 and the second demodulation circuit 48 uses the power supplied by the carrier wave, these driving power sources are not required in the mobile phone 2 which is a power receiving device, and the circuit can be simplified.

  The modulated wave given from the second modulation circuit 45 to the secondary coil 12 is transmitted to the magnetically coupled primary coil 11. Then, the first demodulation circuit 36 connected to the tap c of the primary coil 11 receives and demodulates the transmitted modulated wave, and demodulates the “code indicating that the device is a power receiving device” and “power consumption”. Information ”and“ Fully charged information ”are provided to the power transmission availability determination circuit 33, the electric energy determination circuit 34, and the full charge determination circuit 35. Here, the power transmission availability determination circuit 33 determines whether or not the power receiving device is placed on the power transmission device 1 based on the “code indicating that the device is a power receiving device” (step S3). If the predetermined “code indicating that the device is a power receiving device” is received, it is recognized that the power receiving device is placed on the power transmission device 1, and then the power receiving device is correctly placed on the power transmission device 1. It is determined whether or not it is placed (step S4). On the other hand, if the predetermined “code indicating that the device is a power receiving device” has not been received, it is determined that the power receiving device is not placed on the power transmission device 1, and the carrier wave is output again (step S2).

  Next, it is a determination of whether or not the power receiving device is correctly placed on the power transmission device 1, but the meaning that the power receiving device is correctly placed on the power transmission device 1 means that in non-contact power supply, Whether the coil on the power transmission side and the coil on the power reception side are arranged at positions where power transmission efficiency is high, in other words, the primary side core 15 of the power transmission device 1 shown in FIG. This means whether or not the power transmission device 1 and the mobile phone 2 are arranged at a position where the magnetic coupling of the secondary side core 16 of No. 2 has a high degree of coupling.

  And as the amount of positional deviation between the power transmission device 1 and the mobile phone 2 increases, the power transmission efficiency deteriorates. Therefore, if the power transmission efficiency is extremely low, the mobile phone 2 can be transmitted even if power is transmitted from the power transmission device 1. This means that it is impossible to receive power, and there is no point in performing power transmission. Therefore, it is determined whether or not the amount of positional deviation between the power transmitting device 1 and the mobile phone 2 exceeds a predetermined amount of deviation (step S4). Power transmission from the power transmission device 1 is not performed, and the LED 1 is turned on in orange as a warning display, and the LED 2 is turned off (step S5). At this time, a warning sound may be generated.

  On the other hand, when the amount of position shift between the power transmission device 1 and the mobile phone 2 does not exceed the predetermined amount of shift, the process proceeds to processing for determining the amount of power to be transmitted (step S6). This determination process is performed by the power amount determination circuit 34 based on the “power consumption information” demodulated by the first demodulation circuit 36, and the power of the mobile phone 2 is recognized based on the “power consumption information”. The power transmission output is adjusted to three levels of large, medium and small according to the electric power. The determination result from the power amount determination circuit 34 is transmitted to the LED display circuit 31 and the power switching circuit 32, and the following processing is performed according to the large, medium, and small determination results.

  First, when the determination result is small, the LED display circuit 31 turns on the LED 1 in yellow and blinks the LED 2 in red in the sense that low power transmission is performed (step S7). The power switching circuit 32 turns on the transistor TR11. When the transistor TR11 is turned on, the pulse voltage from the switching circuit 22 is applied to the entire winding of the primary side coil 11, and power transmission is started (step S8). Next, when the determination result is “medium”, the LED display circuit 31 turns on the LED 1 in green and blinks the LED 2 in red in the sense that medium power transmission is performed (step S9). The power switching circuit 32 turns on the transistor TR12. When the transistor TR12 is turned on, the pulse voltage from the switching circuit 22 is applied to the tap a of the primary side coil 11, and power transmission is started (step S10). On the other hand, if the determination result is large, the LED display circuit 31 turns on the LED 1 in purple and blinks the LED 2 in red in the sense that high power transmission is performed (step S11). The power switching circuit 32 turns on the transistor TR13. When the transistor TR13 is turned on, the pulse voltage from the switching circuit 22 is applied to the tap b of the primary coil 11 and power transmission is started (step S12).

  By switching the transistors TR11, TR12, and TR13, the position to which the pulse voltage from the switching circuit is applied changes on the winding of the primary coil 11. That is, since the number of turns of the primary side coil that is actually effective changes, the turn ratio of the primary side coil 11: secondary side coil 12 changes. In this way, it is possible to transmit power according to the power of the power receiving device. In the present embodiment, switching is performed in three stages of large, medium, and small, but the number of switching may be further increased.

  Even after power transmission is started, a carrier wave is periodically transmitted (step S13). Based on information included in a modulated wave returned to the carrier wave, first, the mobile phone 2 that is a power receiving device is connected to the power transmission device. It is confirmed whether or not it has been removed from above 1 (step S14). In this confirmation, as in step S3, the power transmission availability determination circuit 33 determines whether or not the power receiving device is placed on the power transmission device 1 based on “a code indicating that the device is a power receiving device”. If the predetermined “code indicating that the device is a power receiving device” has not been received, it is determined that the power receiving device has been removed from the power transmission device 1, and the power switching circuit 32 turns on all of the transistors TR11, TR12, and TR13. The power output is stopped by turning off (step S15).

  On the other hand, if a predetermined “code indicating that the device is a power receiving device” is received, it is recognized that the power receiving device is placed on the power transmission device 1, and then the power receiving device is installed on the power transmission device 1. It is determined whether or not it is correctly placed (step S16). Similar to step S4, this determination is made by determining whether or not the amount of positional deviation between the power transmission device 1 and the mobile phone 2 exceeds a predetermined amount of deviation. If this deviation amount exceeds a predetermined deviation amount, power transmission from the power transmission device 1 is not performed, and as in step S5, LED1 is lit in orange as a warning display, and LED2 is extinguished ( Step S17). At this time, a warning sound may be generated.

  On the other hand, when the amount of positional deviation between the power transmission device 1 and the mobile phone 2 does not exceed the predetermined amount of deviation, the process proceeds to a process for determining whether or not the mobile phone 2 is fully charged (step S18). ). This determination process is performed by the full charge determination circuit 35 determining whether the mobile phone 2 is in a fully charged state based on the “full charge information” demodulated by the first demodulation circuit 36. When the battery is fully charged, the power switching circuit 32 turns off all of the transistors TR11, TR12, and TR13 to stop power output (step S19), and the power receiving device stops power transmission because the battery is fully charged. LED 1 is lit in red and LED 2 is lit in green (step S20), the carrier wave is output and the confirmation of the state of the power receiving device is continued (step S13). On the other hand, if it is not fully charged, confirmation of the state of the power receiving device is continued while performing power transmission (step S13). As described above, power is supplied from the power transmission device 1 to the mobile phone 2 by the non-contact transmission method.

  In addition, the power transmission device 1 and the mobile phone are used for the settlement of the product price eaten at the store and / or the product price purchased at the store and / or the service charge received from the store using the mobile phone 2. 2, in addition to the power information signal that is information related to the power of the mobile phone 2 described above (“code indicating power receiving device”, “power consumption information”, “full charge information”) A settlement information signal relating to the settlement of the fee transmitted to and from 5 is transmitted and received. Hereinafter, the transmission / reception operation of the adjustment information signal of the power supply system shown in FIG. 3 will be described.

  First, when the adjustment information signal is transmitted from the server 5 to the first modulation circuit 38 via the network 6 in the store, the first modulation circuit 38 modulates the carrier wave from the carrier wave oscillation circuit 37 with this adjustment information signal, Transmit via the primary coil 11. Then, the modulated wave from the first modulation circuit 38 modulated by the adjustment information signal is transmitted to the secondary coil 12 by a non-contact transmission method and demodulated by the second demodulation circuit 48.

  On the other hand, in response to the settlement information signal demodulated by the second demodulation circuit 48, or in response to the operation of the cellular phone 2, the settlement information signal necessary for settlement is returned. The payment information signal from the mobile phone 2 is modulated by the second modulation circuit 45 and transmitted via the secondary coil 12 in the same manner as the transmission of the power information signal described above. Then, the modulated wave from the second modulation circuit 45 modulated by the settlement information signal is transmitted to the primary coil 11 by a non-contact transmission method, demodulated by the first demodulation circuit 36, and then via the network 6 in the store. Is transmitted to the server 5.

  In this way, the settlement information signal can be transmitted and received between the server 5 and the mobile phone 2 via the power transmission device 1. Accordingly, the server 5 and the mobile phone 2 transmit and receive a settlement information signal necessary for the settlement of the product price eaten at the store and / or the product price purchased at the store and / or the service charge received from the store. By doing so, it becomes possible to perform payment using the mobile banking function of the mobile phone 2. Next, an example of settlement performed using such a function will be described.

  FIG. 5 is a flowchart showing a settlement procedure using the power supply system shown in FIG. The flowchart shown in FIG. 5 shows a checkout procedure in a restaurant such as a coffee shop, a restaurant, or a fast food restaurant. First, the contents of the customer's verbal order from the store clerk are transmitted from the POS terminal 4 to the store server 5 by the store clerk (step S51), and the customer order content transmitted from the POS terminal 4 reaches the store server 5 (step S51). S52). Next, the server 5 transmits the order information (settlement information signal) based on the order contents of the delivered customer to the power transmission device 1 incorporated in the corresponding table via the network 6 in the store (step S53). This order information arrives at the apparatus 1 (step S54). Then, the power transmission device 1 transmits the order information to the mobile phone 2 by the above-described payment information signal transmission / reception operation, and the order information reaches the mobile phone 2 (step S55). Then, payment (settlement) is performed by mobile banking of the mobile phone 2 (step S56).

  Next, with reference to FIG. 6, the procedure of mobile banking with the mobile phone 2 will be described. FIG. 6 is a flowchart showing a mobile banking procedure in the mobile phone 2. In the mobile banking on the mobile phone 2, when the settlement processing request button 20 provided in the power transmission device 1 is pressed, the following message is displayed on the screen of the mobile phone 2, so if the user inputs according to the message, Can be settled. First, when the settlement process request button 20 is pressed (step S61), a message “Do you want to settle? [Y / N]” is displayed to confirm whether or not settlement is required (step S62). Here, when [N] (No) is selected, the mobile banking by the mobile phone 2 is ended, and the settlement is performed at the cash register and performed in cash or the like.

  On the other hand, when “Y” (Yes) is selected, the message “Today's food and beverage is 650 yen. Do you want to pay electronically [Y / N]” is displayed to confirm the payment amount (step S63). . Here, when [N] (No) is selected, the mobile banking by the mobile phone 2 is ended, and the settlement is performed at the cash register and performed in cash or the like. On the other hand, if “Y” (Yes) is selected, settlement by mobile banking is performed, and a message “settlement is completed” is displayed (step S64). Furthermore, in order to prove that the payment has been made by mobile banking, the message “Please show this screen to the store clerk when you return. The customer can leave the store simply by showing this message to the store clerk, that is, the customer can check out at each table, so many customers check out at the same time, and the cashiers are busy. In addition, it is not necessary for the store clerk to wait at the cash register for payment, which is beneficial for both customers and stores.

  Further, in the present embodiment, the settlement at a restaurant or the like has been described, but the power supply system shown in FIG. 1 can also be used for settlement of guest rooms of accommodation facilities such as hotels and inns. For example, the power transmission device 1 is incorporated in an appliance such as a table top of a guest room table of an accommodation facility or a top / side of a refrigerator, and the mobile phone 2 is placed at a predetermined position of the appliance in which the power transmission device 1 is incorporated. By placing, charging of the mobile phone 2 is started. In addition, the server 5 of the accommodation facility and the power transmission device 1 in each room are connected by the network 6, and information on the accommodation fee and the number of guests is transmitted from the server 5 to the power transmission device 1.

  If the refrigerator and the server 5 are connected to each other, the food and beverage expenses of the products in the refrigerator in each room can be transmitted to the power transmission device 1 in each room via the server 5. At the time of checkout, when the mobile phone 2 is placed at a predetermined position of the appliance in which the power transmission device 1 is incorporated and the settlement processing request button 20 provided on the power transmission device 1 is pressed, the settlement is the same as in the store. It can be settled by this method. In this way, customers can perform checkout in each room, so many customers check out at the same time, and the front desk is not crowded. There is an advantage that it is not necessary.

  FIG. 7 is a flowchart showing another settlement procedure using the power supply system shown in FIG. The flowchart shown in FIG. 7 shows a procedure for adjusting a boarding fee for a railway or the like. In this example, in FIG. 1, it is assumed that the power transmission device 1 is incorporated in an automatic ticket gate installed at a (dedicated) ticket gate. The power transmission device 1 is connected to a station server 5 via a network 6.

  First, when the cellular phone 2 is placed at a predetermined position of the automatic ticket gate in which the power transmission device 1 is incorporated, rapid charging of the cellular phone 2 is started (step S71). Next, the departure station information is recorded on the mobile phone 2, and personal information (ID information of the mobile phone 2) and departure station information are recorded on the computer of the railway company connected to the station server 5 (steps). S72). Then, the user holding the mobile phone 2 gets on the train and moves (step S73).

  Next, the user who arrives at the target station places the mobile phone 2 on the power transmission device 1 incorporated in the automatic ticket gate installed at the ticket gate of the arrival station (step S74). Based on the departure station information and personal information recorded on the mobile phone 2 (device ID of the mobile phone 2), the departure station information / personal information recorded on the computer of the railway company via the arrival station server 5 is also provided. Reference is made and the boarding fee is paid by mobile banking (step S75). This frees you from the troublesome task of finding a boarding fee to the destination and purchasing a ticket. Moreover, since there is no payment in cash, there is no need to carry cash, and there is an advantage that the railway can be used even when there is no carry. Also, there is no need to have multiple prepaid cards for each railway company.

  FIG. 8 is a flowchart showing another settlement procedure using the power supply system shown in FIG. The flowchart shown in FIG. 8 shows a payment procedure for the purchase price of a boarding ticket such as a railway. In the case of this example, in FIG. 1, it is assumed that the power transmission device 1 is incorporated in a ticketing machine provided at a ticketing office of a station. The ticket issuing machine is connected to a station server, and the power transmission device 1 is connected to a station server 5 via a network 6.

  First, when the mobile phone 2 is placed at a predetermined position of the ticket-issuing machine in which the power transmission device 1 is incorporated, the mobile phone 2 starts to be quickly charged (step S81). Next, when the amount button displaying the charge to the ticket issuing machine is pressed (step S82), personal information (device ID of the mobile phone 2) is transmitted to the railway company computer connected to the station server 5. Ticket purchase price information is recorded, and this purchase price is paid by mobile banking (step S83). Then, a ticket is issued from the ticket issuing machine (step S84). In this usage method, when the ticket is purchased, the battery of the mobile phone 2 can be prevented from being consumed because the auxiliary charging is performed. Moreover, since there is no payment in cash, there is no need to carry cash, and there is an advantage that a ticket can be purchased even if there is no carry. Also, there is no need to have multiple prepaid cards for each railway company.

  As described above, the power transmission device 1 equipped with the power supply system according to the present invention transmits necessary transmission power according to the power of the power receiving device by switching between three levels of high power, medium power, and low power. Therefore, it is possible to supply power to different types of electronic devices with one power transmission device. In addition, information signals can be transmitted and received between the server 5 connected to the power transmission device 1 and the mobile phone 2. Therefore, charges can be settled by the mobile banking function of the mobile phone 2 where an appliance incorporating the power transmission device 1 is provided, and it is necessary to go to the cash register or reception at restaurants and hotels to settle the charges. Disappears. In addition, at the station, it is possible to purchase a ticket without putting cash into the ticket-issuing machine by paying the ticket purchase price by the mobile banking function of the mobile phone 2. Further, when the power transmission device 1 is incorporated in the automatic ticket gate, the mobile phone 2 can be used to settle the boarding fee, so that it is possible to purchase a ticket without having a plurality of prepaid cards. You can use the transportation means of each railway company.

  In the above description, a power transmission device and a mobile phone are described as examples of devices on which the power supply system of the embodiment of the present invention is mounted. However, the power supply system according to the present invention is not limited to a power transmission device and a mobile phone. It can also be applied to other electronic devices. Further, the present invention is not limited to the above-described embodiment, and the configuration of each part can be appropriately changed and implemented without departing from the spirit of the present invention.

  According to the present invention, in a power supply system that supplies power to a power receiving device from a power transmission device to which a commercial power source is supplied in an electrically non-contact manner, the power transmission device, the power receiving device, and an external device connected to the power transmission device And a signal transmission control means for transmitting an information signal between the power receiving apparatus and a power adjusting means for adjusting the transmission power according to the power of the power receiving apparatus indicated by the information signal transmitted from the power receiving apparatus to the power transmission device. Therefore, it is possible to realize a power supply system that can supply power to different types of power receiving devices with a single power transmission device and that can perform charge settlement using the power receiving devices.

These are block diagrams which show the electric constitution of the electric power supply system of embodiment of this invention. These are the figures for demonstrating the schematic structure inside a power transmission apparatus and a mobile telephone shown in FIG. These are block diagrams which show the electrical structure of the power transmission apparatus and mobile telephone which are shown in FIG. 1, FIG. These are flowcharts which show the electric power supply operation | movement of the power transmission apparatus shown in FIG. These are flowcharts which show the adjustment procedure using the electric power supply system shown in FIG. These are the flowcharts which show the procedure of the mobile banking with a mobile telephone. These are flowcharts which show the other payment procedure using the electric power supply system shown in FIG. These are flowcharts which show the other payment procedure using the electric power supply system shown in FIG. These are the external views which show the external appearance of the mobile phone carrying the conventional power supply system, and its AC adapter. These are the external views which show the external appearance of the notebook personal computer carrying the other conventional power supply system, and its AC adapter. These are the external views which show the external appearance of the shaver which mounts the other conventional power supply system, and its AC adapter.

Explanation of symbols

1 Power transmission device 2 Mobile phone (power receiving device)
4 POS terminal 5 Server (external device)
6 Network 10 Primary side circuit 11 Primary side coil 12 Secondary side coil 13 Secondary side circuit 14 Charge control circuit 15 Primary side core (ferrite)
16 Secondary core (ferrite)
17 Power supply circuit 18 Power supply control circuit (power adjustment means)
19 Signal transmission control circuit (signal transmission control means)
21, 25, 41 Rectifier circuit 22 Switching circuit 23 Transformer 24 Power transmission control IC (power adjustment means, signal transmission control means)
31 LED display circuit 32 Power switching circuit 33 Power transmission availability determination circuit 34 Electric energy determination circuit 35 Fully charged determination circuit 36 First demodulation circuit (first demodulation means)
37 Carrier wave oscillation circuit (carrier wave oscillation means)
38 First modulation circuit (first modulation means)
42 Power reception control IC (signal transmission control means)
43 Clock extraction circuit (clock extraction means)
44 Power-on reset circuit (carrier wave detection circuit)
45 Second modulation circuit (second modulation means)
46 voltage clamp circuit 47 regulator 48 second demodulation circuit (second demodulation means)
C1, C2, C3, C4 Capacitors L1, L2, L3 Coils R1, R2 Resistors LED1, LED2 Light emitting diodes TR1, TR2, TR11, TR12, TR13 Transistors

Claims (9)

In a power supply system that supplies power in an electrically non-contact manner from a power transmission device to which commercial power is supplied to a power receiving device,
A power supply system comprising: a signal transmission control unit configured to transmit an information signal between the power transmission device, a power receiving device, and an external device connected to the power transmission device. In a power supply system that supplies power in an electrically non-contact manner from a power transmission device to which commercial power is supplied to a power receiving device,
A signal transmission control means for transmitting an information signal between the power transmission device, the power receiving device, and an external device connected to the power transmission device;
Power adjusting means for adjusting the transmitted power according to the power of the power receiving device indicated by the information signal transmitted from the power receiving device to the power transmission device;
A power supply system characterized by comprising: A power transmission device having a primary side coil, and a primary side circuit that applies a pulse voltage obtained by switching a DC voltage obtained by rectifying and smoothing a commercial power source to the primary side coil;
A power receiving device having a secondary coil magnetically coupled to the primary coil, and a secondary circuit for rectifying and smoothing an induced voltage induced in the secondary coil;
In a power supply system consisting of
A signal transmission control means for transmitting an information signal between the power transmission device, the power receiving device, and an external device connected to the power transmission device;
Power adjusting means for adjusting the transmitted power according to the power of the power receiving device indicated by the information signal transmitted from the power receiving device to the power transmission device;
A power supply system characterized by comprising: Carrier wave oscillation means for periodically applying a carrier wave to the primary side coil;
A first information signal modulated and transmitted from the power receiving device in response to the carrier wave is received and demodulated through the primary side coil, and the demodulated information signal is supplied to the power adjusting means and the external device. Demodulation means;
First modulating means for modulating a carrier wave from the carrier wave oscillating means with an information signal given from the external device and transmitting the modulated signal via the primary side coil;
In the primary circuit,
Carrier detection means for detecting the carrier transmitted to the secondary coil;
Clock extraction means for extracting a clock signal necessary for modulation from the carrier wave;
Second modulation means for modulating the carrier wave based on the clock signal with the information signal of the power receiving device and transmitting it via the secondary coil when the carrier wave detection means detects the carrier wave;
Second demodulation means for receiving and demodulating the information signal transmitted from the first modulation means via the secondary coil;
The power supply system according to claim 3, wherein the secondary side circuit includes:   Power is supplied to the power receiving device placed in proximity to the power transmission device, and an information signal transmitted between the external device and the power receiving device via the power transmission device by the signal transmission control unit is charged. The power supply system according to any one of claims 1 to 4, wherein the power supply system is an information signal necessary for settlement, and has a function of performing the settlement using the power receiving device.   The power transmission device is incorporated in a table top provided in a store, supplies power to the power receiving device placed on the table top, and the external device is the store server, and the signal transmission The information signal transmitted between the server and the power receiving device via the power transmission device by the control means is a product price for eating and drinking at the store, and / or a product price purchased at the store, and / or the 5. The power supply system according to claim 1, wherein the power supply system is an information signal necessary for settlement of a service fee received from a store, and has a function of performing the settlement using the power receiving device. .   The power transmission device is incorporated in an appliance provided in an accommodation facility, supplies power to the power receiving device placed close to the appliance, and the external device is a server of the accommodation facility, and the signal transmission control means The information signal transmitted between the server and the power receiving device via the power transmission device by the commodity price eaten and eaten at the accommodation facility, and / or the commodity price purchased at the accommodation facility, and / or the The power supply according to any one of claims 1 to 4, wherein the power supply is an information signal necessary for settlement of a service fee received from an accommodation facility, and has a function of performing the settlement using the power receiving device. system.   The power transmission device is incorporated in a ticket vending machine connected to a server of a station, supplies power to the power receiving device placed in the vicinity of the ticket vending machine, the external device is the server, and the signal transmission Information necessary for the settlement of the ticket purchased by the ticket issuing machine, in which the information signal transmitted between the server and the power receiving device via the power transmission device by the control means includes the personal information of the user of the power receiving device The power supply system according to any one of claims 1 to 4, wherein the power supply system is a signal and has a function of performing the settlement using the power receiving device.   The power transmission device is incorporated in an automatic ticket gate provided at a ticket gate of a station, supplies power to the power receiving device placed in the vicinity of the automatic ticket gate, and the external device is a server of the station, The information signal transmitted between the server and the power receiving device via the power transmission device by the signal transmission control means is necessary for the settlement of the boarding fee including the departure station information and the personal information of the user of the power receiving device. 5. The power supply system according to claim 1, wherein the power supply system has a function of performing the settlement using the power receiving device.

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