JP2005110412A - Power supply system - Google Patents

Power supply system Download PDF

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Publication number
JP2005110412A
JP2005110412A JP2003340772A JP2003340772A JP2005110412A JP 2005110412 A JP2005110412 A JP 2005110412A JP 2003340772 A JP2003340772 A JP 2003340772A JP 2003340772 A JP2003340772 A JP 2003340772A JP 2005110412 A JP2005110412 A JP 2005110412A
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Japan
Prior art keywords
power
transmission device
power transmission
supply system
power supply
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Pending
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JP2003340772A
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Japanese (ja)
Inventor
Masahiro Kawamura
Takeshi Morimoto
Junichi Nakamura
Yutaka Okada
淳一 中村
豊 岡田
毅 森本
政宏 河村
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Sharp Corp
シャープ株式会社
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Application filed by Sharp Corp, シャープ株式会社 filed Critical Sharp Corp
Priority to JP2003340772A priority Critical patent/JP2005110412A/en
Priority claimed from US10/947,425 external-priority patent/US7233137B2/en
Publication of JP2005110412A publication Critical patent/JP2005110412A/en
Application status is Pending legal-status Critical

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Abstract

PROBLEM TO BE SOLVED: To provide a power supply system capable of supplying power to different kinds of electronic devices with one power transmission device and saving space.
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, and a primary side. A mobile phone (power receiving device) 2 having a secondary side coil 12 magnetically coupled to the side coil 11 and a secondary side circuit 13 for rectifying and smoothing an induced voltage induced in the secondary side coil 12. In a power supply system including a power adjustment unit that adjusts transmission power according to the power of a device, a power transmission device 1 is incorporated in a top plate 51 a of a writing desk 51.
[Selection] Figure 5

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. 13 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. 13, 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. 14 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. 14, 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. 15 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. 15, reference numeral 105 denotes a shaver, and reference numeral 106 denotes a non-contact 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. 13 to 15, the 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. It cannot be used, that is, the AC adapters are not compatible. In particular, in the case of a mobile phone, a dedicated AC adapter is used for each model / manufacturer, and there is no compatibility between devices, which is inconvenient. Therefore, many AC adapters are overflowing in the home, and there has been a problem that the AC adapter and the cord for connecting the AC adapter to a commercial power supply become an obstacle.

  Further, when devices are arranged on a shelf such as a personal computer rack, it is necessary to change the arrangement of both the device and the AC adapter when changing the arrangement of the devices, which is troublesome. Furthermore, cleaning robots, toy robots, and the like have to be charged by a dedicated charging adapter, and the robot must be connected to the AC adapter each time it is charged. 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. For example, while moving in a car, a charging adapter is attached to a dashboard, console box, or the like to charge a mobile phone. However, the adapter or cord is in the way and sometimes obstructs the field of view.

  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.

  An object of the present invention is to provide a power supply system that can supply power to different types of electronic devices with a single power transmission device and can save space.

  In order to achieve the above object, according to the present invention, in a power supply system that supplies power in an electrically non-contact manner from a power transmission device to which a commercial power source is supplied to a power receiving device, the power transmission device is incorporated in an instrument. It is characterized by this. If it does in this way, the electric power supply system which enabled space saving is realizable.

  Further, the present invention provides a power supply system that adjusts the transmission power according to the power of the power receiving device and supplies the power in an electrically non-contact manner from the power transmission device to which the commercial power is supplied to the power receiving device. The power transmission device is incorporated in the appliance. In this way, it is possible to realize a power supply system that can supply power to different types of power receiving devices with one power transmission device and can save space.

  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 receiving device having a secondary side coil magnetically coupled to the side coil and a secondary side circuit that rectifies and smoothes an induced voltage induced in the secondary side coil, and transmits power according to the power of the power receiving device. In the power supply system provided with the power adjusting means for adjusting the power, the power transmission device is incorporated in an appliance. In this way, it is possible to realize a power supply system that can supply power to different types of power receiving devices with one power transmission device and can save space.

  Further, for example, if the appliance is a desk top, a space for placing an AC adapter or a charger is not required, and a power cord for supplying commercial power does not get in the way, and there is no space on the desk. Can be used effectively.

  Further, for example, if the appliance is a shelf board, a storage space for an AC adapter or a charger is not necessary, and a power cord from an AC outlet to a shelf provided on a wall of a room to which commercial power is supplied is used. Since it can be shared by a plurality of power transmission devices incorporated in a plurality of shelves, power cords can be reduced. In addition, when the power transmission device is not used, the entire storage space of the shelf can be utilized.

  In addition, for example, if the appliance is a bottom plate constituting a lockable storage space, the storage space can be locked, so that the power receiving device placed in the storage space can be charged even in public places. Convenient because you don't have to wait when you are. In addition, there is an advantage that the power transmission device is less likely to be stolen or broken even in public places.

  Further, for example, when the instrument is a holder that holds the power receiving device, since it is a holder type, positional displacement is unlikely to occur during movement, and power can be stably supplied to the power receiving device. Further, by using the power receiving device while supplying power to the power receiving device, there is an advantage that it can be used for a long time without worrying about the remaining amount of the battery even during movement. Moreover, since the power transmission device is incorporated, it is less likely that the power transmission device is taken home without permission.

  Further, for example, if the appliance is a dashboard and / or console box of a car, it is incorporated in the dashboard or console box, so that a space for placing an AC adapter or a charger becomes unnecessary, and an AC adapter or charging There is no need to obstruct the field of view like a container or a cord connected to it, which is safe for driving. Further, by using the power receiving device while supplying power to the power receiving device, there is an advantage that it can be used for a long time without worrying about the remaining battery level even in a moving vehicle.

  Further, for example, when the appliance is a top sheet, a space for placing an AC adapter or a charger is not necessary, and a power transmission device is incorporated in the top sheet. It can be used.

  For example, when the power transmission device is incorporated in the side surface or wall of the appliance, there is no need to fold the cord on the side surface or wall surface of the appliance, and there is no need for a space for placing an AC adapter or a charger. In addition, there is an advantage that a space for placing the power receiving device on the floor is not required.

  In addition, for example, when the power transmission device is incorporated in a floor or a rug laid on the floor, power can be supplied to a power receiving device that runs on the floor or a rug laid on the floor like a cleaning robot, so that it can continue to move for a long time. It is possible. In addition, since the power transmission device is built into the floor or a floor covering, there is no unevenness on the floor or the floor covering, and power receiving equipment that runs on the floor or a floor covering is not It can move smoothly.

  According to the present invention, 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 A power receiving device having a secondary side coil magnetically coupled to the side coil and a secondary side circuit that rectifies and smoothes an induced voltage induced in the secondary side coil, and transmits power according to the power of the power receiving device. In the power supply system provided with the power adjusting means for adjusting the power, since the power transmission device is incorporated in the appliance, it is possible to supply power to different types of electronic devices with one power transmission device and to save space An electric power supply system can be realized.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external view showing an external appearance of a power transmission device and a power receiving device equipped with the power supply system of the first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a power transmission device that supplies electric power, (a) shows a case where the power receiving device is a mobile phone 2, and (b) shows a case where the power receiving device is a notebook computer 3. The power transmission device 1 includes an AC plug 1a and a cord 1b. When the AC plug 1a is inserted into an outlet provided on a wall surface or the like, commercial power (AC100V) is supplied to the power transmission device 1 through the cord 1b. The power transmission device 1 once converts the supplied AC 100V into a DC voltage, and then switches to charge the storage battery of the mobile phone 2 or the notebook personal computer 3 as a power receiving device by a non-contact power supply method using magnetic coupling. Supply the DC voltage to be used. Further, this DC voltage can be directly used as a driving power source for the mobile phone 2 or the notebook computer 3.

  Further, the power transmission device 1 has a function of recognizing a power receiving device placed on the power transmission device 1 and transmitting power necessary for the power receiving device according to the power receiving device. The device 1 can charge even an electronic device such as a mobile phone 2 or a notebook personal computer 3 that has different power required for charging. Further, although not shown, any electronic device having a storage battery such as a digital camera, a video camera, or a PDA can be charged in the same manner. The power transmission device 1 also includes light emitting diodes (display means) LED1 and LED2 (hereinafter simply referred to as LED1 and LED2) that indicate an AC100V input state, 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.

  Next, 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 AC 100V supplied via the AC plug 1a and the cord 1b to make a DC voltage once, and then turns the pulse voltage obtained by switching the DC voltage to the primary side coil 11. To give. 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 rectified and smoothed by the secondary side circuit 13 and applied to the charge control circuit 14, and the charge control circuit 14 charges the storage battery with the supplied DC voltage. In this way, non-contact power supply from the power transmission device 1 to the mobile phone 2 is performed.

  Moreover, between the primary side circuit 10 and the secondary side circuit 13, signals, such as information regarding power supply, are transmitted by the above-described contactless transmission method. This signal transmission is performed for the following purposes. First, when power is transmitted with a metal or the like placed on the power transmission device 1, there is a problem that the metal generates heat due to an eddy current, so that a device capable of receiving power is placed. is there. Second, in order to transmit necessary power according to the power receiving device, it is necessary for the power transmission device 1 side to switch between the coil and the circuit, so that the power transmission device 1 side recognizes the power amount information of the power receiving device. . Third, since it is necessary to stop power transmission when the power receiving device is fully charged (for energy saving), the power transmission device 1 recognizes whether or not the power receiving device is fully charged.

  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 the description thereof is omitted. In FIG. 3, commercial power (AC100V) is supplied from the AC plug 1a through the cord 1b from the outside, and the supplied AC100V is full-wave rectified by the rectifier circuit 21 in the primary side circuit 10, and then the coil L1 And smoothed by a smoothing circuit comprising a capacitor C1 and converted to 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 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. The tap c is connected to a demodulation circuit 36 and a carrier wave oscillation circuit 37 of a power transmission control IC (power adjustment means) 24 that performs power transmission control of the primary circuit 10. 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 is an IC composed of 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 demodulation circuit 36, and a carrier wave oscillation circuit 37. An IC chip is formed to reduce the size and thickness of the power transmission device 1. The function and operation of each circuit will be described later. Note that the transistors TR11, TR12, and TR13 may be other switching elements such as MOSFETs, or selector switches.

  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 supplied to a power-on reset circuit 44, a voltage clamp circuit 46, and a regulator 47 of a power reception control IC (power adjustment 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 43 and a modulation circuit 45 connected to the secondary side coil 12, and a signal transmitted via the primary side coil 11 and the secondary side coil 12. Perform signal processing. 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. Then, the clock extraction circuit 43 connected to the secondary coil 12 extracts a clock signal necessary for modulation from the carrier wave, and the modulation circuit 45 indicates that “it is a power receiving device” that is information of the mobile phone 2. A modulated wave obtained by modulating a carrier wave based on the “code shown”, “power consumption information”, and “full charge information” is given 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, and further, the clock extraction circuit 43, the modulation circuit Since the driving power of 45 uses the power supplied by the carrier wave, no power source is required in the mobile phone 2 which is a power receiving device, and the circuit can be simplified.

  The modulated wave supplied from the modulation circuit 45 to the secondary coil 12 is transmitted to the primary coil 11 that is magnetically coupled. The demodulating circuit 36 connected to the tap c of the primary coil 11 receives and demodulates the transmitted modulated wave, and includes a “code indicating a power receiving device” included in the demodulated information signal, The “power consumption information” and “full charge information” are supplied 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 processing is performed by the power amount determination circuit 34 based on the “power consumption information” included in the information signal demodulated by the demodulation circuit 36, and the power of the mobile phone 2 is determined based on the “power consumption information”. And 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 or not the mobile phone 2 is fully charged based on “full charge information” included in the information signal demodulated by the 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, non-contact power supply from the power transmission device 1 to the mobile phone 2 is performed.

  FIG. 5 is an external view showing the external appearance of the power supply system according to the second embodiment of the present invention. The power supply system shown in FIG. 5 is characterized in that the power transmission device 1 shown in FIGS. 1 to 3 is incorporated in a table top (apparatus), and some examples thereof are shown. In FIG. 5, (a) shows the external appearance of a study desk 51 placed in a study or the like in which the power transmission device 1 is incorporated in the top plate 51a, and (b) is a location where the power transmission device 1 of the top plate 51a is incorporated. The portion 51b is shown enlarged. As shown in FIG. 5B, the power transmission device 1 is incorporated in the top plate 51a so as not to protrude from the surface of the top plate 51a. Moreover, (c) has shown the external appearance of the conference desk 52 set | placed in the conference room etc. in which the power transmission apparatus 1 is integrated in the top plate 52a. And 52b has shown the location where the power transmission apparatus 1 is integrated, and the power transmission apparatus 1 is integrated with the form similar to FIG.5 (b). Moreover, (d) has shown the external appearance of the desk 53 of the restaurant set | placed in the restaurant etc. in which the power transmission apparatus 1 is integrated in the top plate 53a. And 53b has shown the location where the power transmission apparatus 1 is integrated, and the power transmission apparatus 1 is integrated with the form similar to FIG.5 (b). Moreover, (e) has shown the external appearance of the desk 54 of the train in which the power transmission apparatus 1 is incorporated in the top board 54a. And 54b has shown the location where the power transmission apparatus 1 is integrated, and the power transmission apparatus 1 is integrated with the form similar to FIG.5 (b). In addition, although AC plugs and cords for supplying commercial power (AC100V) to the built-in power transmission device 1 are not shown, power cords and the like installed inside each desk and its top plate shown in FIG. Thus, commercial power is supplied to the incorporated power transmission device 1.

  In FIG. 5, 2 is the mobile phone shown in FIGS. 1 to 3, 3 is the notebook computer shown in FIG. 1, and the power transmission device 1 incorporated in the top plate of various desks includes the power transmission device 1. When the mobile phone 2 or the notebook personal computer 3 is placed in the place where the mobile phone 2 or the notebook personal computer 3 is placed, the necessary power of the placed mobile phone 2 or the notebook personal computer 3 is detected as described above, and power is supplied by adjusting the power transmitted to these. . That is, one power transmission device 1 can supply power to various power receiving devices placed on a desk in which the power transmission device 1 is incorporated. Further, by incorporating the power transmission device 1 into the top plate of the desk in this way, a space for placing an AC adapter or a charger becomes unnecessary, and a power cord for supplying commercial power does not get in the way, There is an advantage that the space can be effectively used.

  Furthermore, as shown in FIG. 5 (e), the table in the moving vehicle or the table in the facility of the destination (store or conference room) as shown in FIGS. 5 (c) and 5 (d). If this power transmission device 1 is incorporated, there is no need to carry an AC adapter or a charger dedicated to the device, and charging can be performed anywhere, and the device can be used without worrying about the remaining battery level of the device. In addition, since the power transmission device 1 can charge various devices, it can be similarly charged as long as it is a device having a rechargeable battery such as a PDA, digital camera, video camera, etc. It is. In addition to the illustrated ones, the power transmission device 1 can be similarly incorporated into a desk of a vehicle such as an airplane or a ship, a learning desk, a desk installed in a hot spot, or a desk installed in each room of a hotel. is there.

  FIG. 6 is an external view showing the external appearance of the power supply system according to the third embodiment of the present invention. The power supply system shown in FIG. 6 is characterized in that the power transmission device 1 shown in FIGS. 1 to 3 is incorporated in a shelf board (equipment), and an example thereof is shown. In FIG. 6, reference numeral 61 denotes a shelf, and reference numeral 61 a denotes a plurality of shelf plates in which the power transmission device 1 (not shown) is incorporated and disposed on the shelf 61. Moreover, 61b has shown the location where the power transmission apparatus 1 (not shown) of the shelf board 61a is integrated, and the power transmission apparatus 1 is integrated with the form similar to the form shown in FIG.5 (b). Note that although AC plugs and cords for supplying commercial power (AC 100 V) to the built-in power transmission device 1 are not shown, power cords and the like installed inside the shelf 61 and each shelf 61a shown in FIG. The commercial power supply is supplied to the power transmission device 1 incorporated therein.

  In FIG. 6, 2 is the mobile phone shown in FIGS. 1 to 3, 3 is the notebook computer shown in FIG. 1, and the power transmission device 1 incorporated in each shelf board 61 a is a place where the power transmission device 1 is incorporated. When the mobile phone 2 or the notebook personal computer 3 is placed on 61b, the necessary power of the placed mobile phone 2 or the notebook personal computer 3 is detected as described above, and power is supplied by adjusting the power transmitted to these. That is, one power transmission device 1 can supply power to various power receiving devices placed on the shelf board 61a in which the power transmission device 1 is incorporated. Further, by incorporating the power transmission device 1 into the shelf board 61a in this manner, the storage space for the AC adapter and the charger becomes unnecessary, and the shelf 61 is provided from an AC outlet provided on the wall of a room to which commercial power is supplied. Since the power cords up to can be shared by the plurality of power transmission devices 1, the number of power cords can be reduced. Moreover, when not using the power transmission apparatus 1, all the storage space can be utilized. Moreover, since the power transmission device 1 is provided on the plurality of shelf boards 61a, the rearrangement of the devices can be easily performed. In addition, charging is possible regardless of the type or manufacturer of the mobile phone or notebook computer, and other devices such as digital cameras and portable game machines can also be charged.

  FIG. 7 is an external view showing the external appearance of the power supply system according to the fourth embodiment of the present invention. The power supply system shown in FIG. 7 is characterized in that the power transmission device 1 shown in FIGS. 1 to 3 is incorporated in a bottom plate (instrument) constituting a storage space, and an example thereof is shown. In FIG. 7, 71 indicates a locker, and 72 indicates a plurality of storage spaces provided in the locker 71. And (a) shows the external appearance of the locker 71 whole, (b) has expanded and showed the one storage space 72. FIG. As shown in FIG. 7B, the storage space 72 includes a door 73 and a key 74, and is configured to be locked. The power transmission device 1 (not shown) is incorporated in the bottom plate 72a constituting the storage space 72. And 72b has shown the location where the power transmission apparatus 1 of the baseplate 72a is integrated, and the power transmission apparatus 1 is integrated with the form similar to the form shown in FIG.5 (b). In addition, although AC plugs and cords for supplying commercial power (AC 100 V) to the built-in power transmission device 1 are not shown, via power cords installed inside the rocker 71 and inside the bottom plate 72a, etc. Commercial power is supplied to the assembled power transmission device 1.

  In FIG. 7, reference numeral 2 denotes the mobile phone shown in FIGS. 1 to 3, and the power transmission device 1 incorporated in the bottom plate 72 a is described above when the mobile phone 2 is placed at a location 72 b where the power transmission device 1 is incorporated. In this way, the necessary power of the placed mobile phone 2 is detected, and the power to be transmitted is adjusted to supply power. That is, one power transmission device 1 can supply power to various power receiving devices placed on the bottom plate 72a in which the power transmission device 1 is incorporated. In addition, since the storage space 72 can be locked, it is convenient that the mobile phone 2 placed in the storage space 72 is charged even in a public place without having to wait on the spot. Moreover, there is an advantage that the power transmission device 1 is less likely to be stolen or broken even in public places. The mobile phone 2 can be charged regardless of the model or manufacturer, and other devices such as a notebook computer, a digital camera, and a portable game machine can also be charged.

  FIG. 8 is an external view showing the external appearance of the power supply system according to the fifth embodiment of the present invention. The power supply system shown in FIG. 8 is characterized in that the power transmission device 1 shown in FIGS. 1 to 3 is incorporated in a wall such as a room, and an example thereof is shown. In FIG. 8, 81a shows a wall, 81b shows the location where the power transmission device 1 (not shown) of the wall 81a is incorporated, and the power transmission device 1 has the same form as that shown in FIG. 5 (b). It has been incorporated. Moreover, the shape (not shown) for hooking an apparatus is given to the location 81b in which the power transmission apparatus 1 is incorporated, and the mobile phone 2 shown in FIGS. 1 to 3 is hung there. Although an AC plug or cord for supplying commercial power (AC 100 V) to the built-in power transmission device 1 is not shown, the power transmission device built in via a power cord installed inside the wall 81a. 1 is supplied with commercial power.

  In addition, as shown in FIG. 8, charging can be started when the mobile phone 2 is hung on a location 81 b where the power transmission device 1 is incorporated. At this time, the power transmission device 1 incorporated in the wall 81a detects the necessary power of the mobile phone 2 hung on the location 81b where the power transmission device 1 is incorporated and adjusts the power to be transmitted as described above. To supply power. That is, one power transmission device 1 can supply power to various power receiving devices hung on the wall in which the power transmission device 1 is incorporated. Moreover, since it is incorporated in the wall, there is no need to fold the cord on the surface of the wall, and there is no need for a space for placing the mobile phone 2 on the floor or the like. In the present embodiment, the power transmission device 1 is incorporated in the wall 81a. However, the present invention is not limited to the wall, and can be incorporated in the side of other furniture and appliances such as a refrigerator, a chiffon, and a shelf. An effect is obtained. In addition, charging is possible regardless of two types of mobile phones or manufacturers, and other devices such as notebook computers, digital cameras, and portable game machines can also be charged.

  FIG. 9 is an external view showing the external appearance of the power supply system according to the sixth embodiment of the present invention. The power supply system shown in FIG. 9 is characterized in that the power transmission device 1 shown in FIGS. 1 to 3 is incorporated in a holder (equipment), and an example thereof is shown. In FIG. 9, 91 denotes a holder for holding the mobile phone 2 shown in FIGS. 1 to 3, and is fixed to the rear part of the seat of the train. And the power transmission apparatus 1 is integrated in the holder 91 with the form similar to the form shown in FIG.5 (b). Although an AC plug or cord for supplying commercial power (AC 100 V) to the built-in power transmission device 1 is not shown, the power transmission device built in via a power cord installed inside the holder 91 is not shown. 1 is supplied with commercial power.

  Further, as shown in FIG. 9, when the mobile phone 2 is held by the holder 91, charging can be started. At this time, the power transmission device 1 incorporated in the holder 91 detects the necessary power of the mobile phone 2 as described above, adjusts the power to be transmitted, and supplies power. That is, one power transmission device 1 can supply power to various power receiving devices held by the holder 91 in which the power transmission device 1 is incorporated. Moreover, since it is a holder type, it is hard to generate | occur | produce position shift during a movement, and it can charge stably. Further, by using the battery while charging, there is an advantage that it can be used for a long time without worrying about the remaining battery level even in a moving train. Moreover, since the power transmission apparatus 1 is incorporated, it is less likely that the power transmission apparatus 1 is taken home without permission in a public place. The mobile phone 2 can be charged regardless of the model or manufacturer, and other devices such as a notebook computer, a digital camera, and a portable game machine can also be charged.

  FIG. 10 is an external view showing the external appearance of the power supply system according to the seventh embodiment of the present invention. The power supply system shown in FIG. 10 is characterized in that the power transmission device 1 shown in FIGS. 1 to 3 is incorporated in a dashboard (equipment) of a car, and an example thereof is shown. The built-in power transmission device 1 operates by obtaining power from a car battery via a power cord installed inside a dashboard or the like, and supplies power from the battery to a power receiving device. ing. In FIG. 10, 92a shows the dashboard of a car, 92b shows the location where the power transmission device 1 (not shown) of the dashboard 92a is incorporated, and has the same form as the form shown in FIG. 5 (b). A power transmission device 1 is incorporated.

  In FIG. 10, 2 is the mobile phone shown in FIGS. 1 to 3, and the power transmission device 1 incorporated in the dashboard 92 a is placed in the location 92 b where the power transmission device 1 is incorporated. As described above, the necessary power of the cellular phone 2 placed is detected, and the power to be transmitted is adjusted and transmitted. That is, one power transmission device 1 can supply power to various power receiving devices placed on the dashboard 92a in which the power transmission device 1 is incorporated. Moreover, since it is incorporated in the dashboard 92a, there is nothing that obstructs the field of view like a charging adapter or a cord, which is safe for driving. Further, by using the battery while charging, there is an advantage that it can be used for a long time without worrying about the remaining battery level even in a moving vehicle. The mobile phone 2 can be charged regardless of the model or manufacturer, and other devices such as a notebook computer, a digital camera, and a portable game machine can also be charged. Further, the same effect can be obtained even if the power transmission device 1 is incorporated in the console box (apparatus) 93 of the car shown in FIG.

  FIG. 11 is an external view showing the external appearance of the power supply system according to the eighth embodiment of the present invention. The power supply system shown in FIG. 10 is characterized in that the power transmission device 1 shown in FIGS. 1 to 3 is incorporated in a surface sheet (apparatus), and an example thereof is shown. In FIG. 11, 94 indicates a desk, and 95 a indicates a resin or glass surface sheet on which the power transmission device 1 (not shown) is incorporated and laid on the desk 94. Moreover, 95b has shown the location in which the power transmission apparatus 1 of the surface sheet 95a is integrated, and the power transmission apparatus 1 is integrated with the form similar to the form shown in FIG.5 (b). In addition, although AC plugs and cords for supplying commercial power (AC 100 V) to the built-in power transmission device 1 are not shown in the figure, built-in power transmission via a power cord or the like installed inside the top sheet 95a. Commercial power is supplied to the device 1.

  Moreover, in FIG. 11, 2 is the mobile phone shown in FIGS. 1 to 3, and the power transmission device 1 incorporated in the top sheet 95a is placed in the location 95b where the power transmission device 1 is incorporated. As described above, the necessary power of the cellular phone 2 placed is detected, and the power to be transmitted is adjusted and transmitted. That is, it is possible for one power transmission device 1 to supply power to various power receiving devices placed on the top sheet 95a in which the power transmission device 1 is incorporated. Moreover, since the power transmission device is incorporated in the top sheet, the entire top sheet can be used when charging is not performed. In the present embodiment, the power transmission device 1 is incorporated in a surface sheet placed on a desk, but the same applies to a surface sheet placed on other furniture and utensils such as a dining table (lunch mat), a chiffon, and a piano. In this case, the same effect can be obtained. In addition, charging is possible regardless of the model or manufacturer of the mobile phone, and other devices such as notebook computers, digital cameras, and portable game machines can also be charged.

  FIG. 12 is an external view showing the external appearance of the power supply system according to the ninth embodiment of the present invention. The power supply system shown in FIG. 12 is characterized in that the power transmission device 1 shown in FIGS. 1 to 3 is incorporated in the floor, and an example thereof is shown. In FIG. 12, 96 indicates a floor, 97 indicates a place where the power transmission device 1 (not shown) of the floor 96 is incorporated, and the power transmission device 1 has the same configuration as that shown in FIG. Multiple built-in. Although an AC plug or a cord for supplying commercial power (AC 100 V) to the built-in power transmission device 1 is not shown, commercial power is supplied to each power transmission device 1 via a power cord installed inside the floor 96. Power is supplied.

  Reference numeral 98 denotes a cleaning robot for cleaning the floor 96. The cleaning robot 98 is a power receiving device having a power adjustment unit corresponding to the power transmission device 1 as with the mobile phone 2 shown in FIG. 3. The power transmission device 1 is cleaned on a portion 97 where the power transmission device 1 is incorporated. When the robot 98 is positioned, the necessary power of the cleaning robot 98 is detected as described above, and the power to be transmitted is adjusted and transmitted. In this way, the cleaning robot 98 can be charged while traveling, and thus can continue to move for a long time. In addition, since the power transmission device 1 is incorporated in the floor 96, the floor 96 does not have uneven portions, and the cleaning robot 98 can move smoothly. In addition, the cleaning robot 98 can be charged regardless of the model or manufacturer, and other devices such as a mobile phone, a notebook computer, a digital camera, and a portable game machine can also be charged. Moreover, in this embodiment, although the power transmission apparatus 1 is integrated in the floor 96, it is also possible to integrate the power transmission apparatus 1 in carpets, carpets, tatami mats, etc. laid on the floor, and in that case as well The effect is obtained.

  As described above, the power transmission device 1 equipped with the power supply system according to the present invention switches the necessary transmission power according to the power of the power receiving device to three levels of high power, medium power, and low power and transmits the power. Therefore, power can be supplied to different types of electronic devices with one power transmission device. Further, the power transmission device 1 is provided on a desk top plate, a shelf board, a lockable bottom plate of a locker, a holder of a power receiving device, a car dashboard and / or a console box, a surface sheet, a side surface of a wall or a device, a floor or a floor. Since it is built into the rug, it can save space.

  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. In addition, the power transmission device 1 is incorporated in a table top board, a shelf board, a locker bottom board, a holder of a power receiving device, a car dashboard and / or console box, a surface sheet, a floor, a floor covering, and a wall. Although an example is shown, it may be incorporated in another device or member. 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, 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 A power receiving device having a secondary side coil magnetically coupled to the side coil and a secondary side circuit that rectifies and smoothes an induced voltage induced in the secondary side coil, and transmits power according to the power of the power receiving device. In the power supply system provided with the power adjusting means for adjusting the power, since the power transmission device is incorporated in the appliance, it is possible to supply power to different types of electronic devices with one power transmission device and to save space An electric power supply system can be realized.

These are the external views which show the external appearance of the power transmission apparatus and power receiving apparatus which mount the electric power supply system of 1st 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 external views which show the external appearance of the electric power supply system of 2nd Embodiment of this invention. These are external views which show the external appearance of the electric power supply system of 3rd Embodiment of this invention. These are external views which show the external appearance of the electric power supply system of 4th Embodiment of this invention. These are external views which show the external appearance of the electric power supply system of 5th Embodiment of this invention. These are external views which show the external appearance of the power supply system of 6th Embodiment of this invention. These are external views which show the external appearance of the electric power supply system of 7th Embodiment of this invention. These are external views which show the external appearance of the power supply system of 8th Embodiment of this invention. These are external views which show the external appearance of the power supply system of 9th Embodiment of this invention. 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

DESCRIPTION OF SYMBOLS 1 Power transmission apparatus 1a AC plug 1b Code 2 Mobile phone (power receiving device)
3. Notebook PC (power receiving device)
DESCRIPTION OF SYMBOLS 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)
21, 25, 41 Rectifier circuit 22 Switching circuit 23 Transformer 24 Power transmission control IC (power adjustment means)
DESCRIPTION OF SYMBOLS 31 LED display circuit 32 Power switching circuit 33 Power transmission availability determination circuit 34 Electric energy determination circuit 35 Full charge determination circuit 36 Demodulation circuit 37 Carrier wave oscillation circuit 42 Power reception control IC (power adjustment means)
43 Clock Extraction Circuit 44 Power-on Reset Circuit 45 Modulation Circuit 46 Voltage Clamp Circuit 47 Regulator 51, 94 Study Desk 51a, 52a, 53a, 54a Top Plate (Equipment)
52 Conference desk 53 Restaurant desk 54 Train desk 61 Shelf 61a Shelf (equipment)
71 Locker 72 Storage space 72a Bottom plate (equipment)
73 Door 74 Key 81a Wall 91 Holder (Equipment)
92a Dashboard
93 Console box (equipment)
95a Surface sheet (equipment)
96 Floor 98 Cleaning robot C1, C2, C3, C4 Capacitor L1, L2, L3 Coil R1, R2 Resistance LED1, LED2 Light emitting diode TR1, TR2, TR11, TR12, TR13 Transistor

Claims (13)

  1. 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,
    The power supply system, wherein the power transmission device is incorporated in an appliance.
  2. In a power supply system for supplying power in an electrically non-contact manner by adjusting transmission power according to the power of the power receiving device from the power transmission device to which commercial power is supplied,
    The power supply system, wherein the power transmission device is incorporated in an appliance.
  3. 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 comprising a power adjustment means for adjusting transmission power according to the power of the power receiving device,
    The power supply system, wherein the power transmission device is incorporated in an appliance.
  4.   The power supply system according to claim 1, wherein the appliance is a table top.
  5.   The power supply system according to any one of claims 1 to 3, wherein the appliance is a shelf board.
  6.   The power supply system according to any one of claims 1 to 3, wherein the appliance is a bottom plate constituting a lockable storage space.
  7.   The power supply system according to any one of claims 1 to 3, wherein the appliance is a holder that holds the power receiving device.
  8.   The power supply system according to any one of claims 1 to 3, wherein the appliance is a dashboard and / or a console box of a car.
  9.   The power supply system according to any one of claims 1 to 3, wherein the appliance is a surface sheet.
  10.   The power supply system according to any one of claims 1 to 3, wherein the power transmission device is incorporated in a side surface of the appliance.
  11. 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,
    The power supply system, wherein the power transmission device is incorporated in a floor or a rug or wall laid on the floor.
  12. In a power supply system for supplying power in an electrically non-contact manner by adjusting transmission power according to the power of the power receiving device from the power transmission device to which commercial power is supplied,
    The power supply system, wherein the power transmission device is incorporated in a floor or a rug or wall laid on the floor.
  13. 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 comprising a power adjustment means for adjusting transmission power according to the power of the power receiving device,
    The power supply system, wherein the power transmission device is incorporated in a floor or a rug or wall laid on the floor.
JP2003340772A 2003-09-30 2003-09-30 Power supply system Pending JP2005110412A (en)

Priority Applications (1)

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JP2003340772A JP2005110412A (en) 2003-09-30 2003-09-30 Power supply system
US10/947,425 US7233137B2 (en) 2003-09-30 2004-09-23 Power supply system
CNA200410085133XA CN1604426A (en) 2003-09-30 2004-09-30 Power system

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