JP2010183757A - Solar cell table - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar cell table which supplies power while simply and easily placing an electric appliance on a top plate and can unfailingly prevent a fault due to a drink water spilled over the top plate by easily forming a waterproof structure in both a power generation region and a power supply region. <P>SOLUTION: The solar cell table includes a top plate 1, a solar cell panel 2 provided on the top plate 1, and non-contact power to supply portions 3, 103, 203, 303 and 403 which are provided on the top plate 1 and supply power to electric appliances 50, 90 having a power receiving coil 51 placed on the upper surface of the top plate 1. The non-contact power supply portions 3, 103, 203, 303 and 403 are each equipped with a power transmission coil 11 electromagnetically coupled to the power reception coil 51 for transmitting power by magnetic induction, and AC power supply units 12, 82 for supplying AC power to the power transmission coil 11. In the top plate 1, the generation region 4 equipped with the solar cell panel 2 and the power supply region 5 having the non-contact power supply portion 3 are configured to have upper surfaces belonging to the same plane so that the top plate 1 has the plane-like upper surface. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a solar cell table provided with a solar cell panel on a top plate.

A table has been developed in which a solar cell panel is provided on the top plate and power generated by the solar cell panel can be output to the outside. (See Patent Documents 1 and 2)
Patent document 1 has described the table top mounted on the top plate of a table. This table top is provided with a solar cell panel, a liquid crystal watch, a card calculator, and a connector for outputting electric power to the outside. Patent Document 2 describes an outdoor table. In this table, a solar cell panel is fixed on a top plate, and a battery to be charged by the solar cell panel and an outlet for outputting electric power are provided.

Japanese Patent Laid-Open No. 62-236798 Japanese Patent Laid-Open No. 10-165232

  The table described in the above patent document outputs the electric power generated by the solar cell panel to the outside through a connector or an outlet. Therefore, the electric power of the solar cell panel can be used by connecting the electric device to the connector or the outlet. However, the table having this structure has a drawback that it cannot be used conveniently because electric devices are connected to connectors and outlets. Since the table top of Patent Document 1 is provided with a connector on the upper surface, when an electrical device is connected to this connector, there is a drawback that there is a lead wire on the top plate and this becomes an obstacle. There is also a drawback that when the electrical device moves on the top plate, the connector comes out and power cannot be supplied. Furthermore, since the table of Patent Document 2 is provided with an outlet under the top plate, it is long even when an electric device is connected to the outlet via a lead wire and the electric device is placed on the top plate. There is a drawback that the lead wire becomes an obstacle when using the table. In addition, there is a problem that the electrical device moves from the top plate and the lead wire is pulled to disconnect the outlet.

The present invention has been developed for the purpose of solving the above drawbacks. An important object of the present invention is to provide a solar cell table that allows any user to easily and easily supply electric power by placing an electric device on a top plate so that a lead wire does not get in the way.
Another important object of the present invention is to provide a solar cell table that can stably supply power to an electric device even if the position of the electric device mounted on a flat top plate is shifted.
Furthermore, another important object of the present invention is that both the power generation region and the power supply region are planar, and a single glass plate or the like is placed on the power generation region and the power supply region. It is intended to provide a solar cell table that can reliably prevent a failure due to drinking water or the like spilling on the top board as a waterproof structure.

Means for Solving the Problems and Effects of the Invention

  The solar cell table of the present invention includes a top plate 1, a solar cell panel 2 provided on the top plate 1, and an electric device having a power receiving coil 51 provided on the top plate 1 and placed on the top surface of the top plate 1. Non-contact power supply units 3, 103, 203, 303, and 403 for supplying power to 50 and 90 are provided. The non-contact power supply units 3, 103, 203, 303, and 403 are a power transmission coil 11 that is electromagnetically coupled to the power reception coil 51 and transmits power by magnetic induction, and an AC power source 12 that supplies AC power to the power transmission coil 11. , 82. The top plate 1 has the power generation region 4 provided with the solar cell panel 2 and the power supply region 5 where the non-contact power supply unit 3 is disposed on the same plane, and the top surface of the top plate 1 is planar.

  The above solar cell table has a feature that electric power can be supplied by placing an electric device on the top plate so that the lead wire does not get in the way. The above solar cell table has a power generation region and a power supply region provided on the top plate arranged in the same plane so that the upper surface is planar, and further, a power receiving coil built in an electric device mounted on the power supply region. This is because power is transferred from the power transmission coil. This solar cell table can supply electric power by placing an electric device on the top plate, so there is no disturbing lead wire on or around the top plate, and it can supply power to the electric device very easily and conveniently. There are features. Further, unlike a connector or an outlet, there is no need to physically connect them, so that a dedicated connector or outlet is not required for connection, and power can be supplied to all electric devices having a power receiving coil.

  In addition, since the above solar cell table has both a power generation region and a power supply region in a flat shape, a single glass plate or the like is placed on the power generation region and the power supply region, so that both the power generation region and the power supply region are simple. Moreover, the waterproof structure can also realize a feature that can surely prevent a failure due to drinking water spilling on the top plate.

  The solar cell table of the present invention includes a control mechanism 10 in which the non-contact power supply units 3 and 103 cause the power transmission coil 11 to approach the power reception coil 51 of the electric devices 50 and 90 placed on the power generation region 5 of the top plate 1. Then, with this control mechanism 10, the power transmission coil 11 is moved along the top plate 1, is brought close to the power reception coil 51 of the electric devices 50 and 90 placed on the power feeding region 5, and the power reception coil 51 from the power transmission coil 11. Power can be supplied to the electric devices 50 and 90.

  The above solar cell table has a feature that any user can easily and easily supply electric power by placing an electric device on the top plate so that the lead wire does not get in the way. In particular, the solar cell table described above has a feature that power can be stably supplied to an electric device even if the position of the electric device mounted on a flat top plate is shifted. This is because the power transmission coil is moved closer to the power reception coil of the electric device that has moved by the control mechanism. This solar cell table does not require electrical equipment to be set in a predetermined position at a predetermined position, and by placing it on a power supply area, the power transmission coil is brought close to the power reception coil by a control mechanism, and power is stably conveyed. Because it can, everyone can easily set the electrical equipment and carry the power.

In the solar cell table of the present invention, the control mechanism 10 moves the power transmission coil 11 under the control of the position detection controllers 14 and 64 that detect the positions of the electric devices 50 and 90 and the position detection controllers 14 and 64. The moving mechanism 13 can be provided.
Since the solar cell table described above detects the position of the electric device and brings the power transmission coil closer to the power reception coil, it can carry power more efficiently from the power transmission coil to the power reception coil.

In the solar cell table of the present invention, the position detection controllers 14 and 64 can detect the position of the power receiving coil 51 built in the electric devices 50 and 90.
In the above solar cell table, the position detection controller detects the position of the power receiving coil, so that the power transmitting coil can be brought close to the power receiving coil to efficiently carry power.

  In the solar cell table of the present invention, the position detection controllers 14 and 64 have a plurality of position detection coils 30 disposed close to the surface of the top plate 1 and pulses for supplying pulse signals to the position detection coils 30. A power supply 31, a reception circuit 32 that receives an echo signal that is excited by a pulse signal supplied from the pulse power supply 31 to the position detection coil 30 and that is output from the power reception coil 51 to the position detection coil 30, and the reception circuit 32 Identification circuits 33 and 73 for determining the position of the power receiving coil 51 from the received echo signal can be provided.

  In the above solar cell table, the position detection controller sends a pulse signal from a pulse power source to a plurality of position detection coils, and the echo signal output from the power reception coil, that is, the position of the power reception coil by an electric signal. It can be checked electrically accurately.

  In the solar cell table of the present invention, the position detection controller 14 includes a first position detection controller 14A that roughly detects the position of the power receiving coil 51 of the electric devices 50 and 90, and a first position detection controller 14A that precisely detects the position of the power receiving coil 51. 2 position detection controllers 14B and 14C, and the power transmission coil 11 approached to the power receiving coil 51 by the first position detection controller 14A is replaced with the power receiving coil 51 by the second position detection controllers 14B and 14C. Can be approached.

  In the above solar cell table, the second position detection control for precisely detecting the position of the power receiving coil in the power transmitting coil approached to the power receiving coil by the first position detection controller that roughly detects the position of the power receiving coil of the electric device. Since it is made to approach a receiving coil with a device, there exists the characteristic which can position the receiving coil more correctly.

  In the solar cell table of the present invention, the first position detection controller 14 </ b> A supplies a plurality of position detection coils 30 arranged close to the surface of the top plate 1 and pulse signals to the position detection coils 30. A pulse power source 31, a receiving circuit 32 that receives an echo signal excited from a pulse signal supplied from the pulse power source 31 to the position detection coil 30 and output from the power receiving coil 51 to the position detection coil 30, and the receiving circuit 32 And an identification circuit 33 for discriminating the position of the power receiving coil 51 from the echo signal received.

  In the above solar cell table, the first position detection controller sends a pulse signal to a plurality of position detection coils arranged close to the surface of the top plate, and is excited by the pulse signal to be received from the receiving coil. Since the receiving circuit receives the echo signal output to the position detection coil and determines the position of the power receiving coil, the position of the power receiving coil can be checked electrically while widening the detection range with a plurality of position detection coils. Can do. Since this structure can detect a wide range efficiently, it is extremely effective as a first position detection controller that roughly detects the position of the power receiving coil of the electric device.

  The solar cell table of the present invention can be stopped at a position where the second position detection controller 14C moves the power transmission coil 11 and the voltage of the power transmission coil 11 is lowest. Furthermore, the solar cell table of the present invention can be stopped at the position where the second position detection controller 14C moves the power transmission coil 11 and the power consumption of the AC power supply 82 is minimized. Furthermore, in the solar cell table of the present invention, the second position detection controller 14C can move the power transmission coil 11 and stop at the position where the current of the power reception coil 51 becomes the largest.

The solar cell table of the present invention can be provided with a magneto-optically transmissive panel 6 that is translucent and waterproof and has non-magnetic shielding properties on the upper surfaces of the power generation region 4 and the power feeding region 5.
Since the above solar cell table covers the upper surface of the solar cell panel and the power transmission coil with a magneto-optically transmissive panel, it can be easily waterproofed.

In the solar cell table of the present invention, the magneto-optical transmission panel 6 can be either a transparent reinforced plastic panel 6A or glass.
This solar cell table can be easily waterproofed by placing a plastic panel or glass on the solar cell table.

The solar cell table of the present invention includes a battery 7 charged with power generated by the solar cell panel 2 under the top plate 1 and supplies power to the AC power sources 12 and 82 from the battery 7. it can.
Since this solar cell table stores the electric power of the solar cell panel in the battery and supplies it to the AC power supply, the electric power of the solar cell panel can be effectively supplied to the power transmission coil and can be supplied to the electric device.

The solar cell panel 2 of the present invention can be provided with a power feeding region 5 at the center of the top plate 1.
Since this solar cell table is provided with a power feeding area in the center, it can be set and supplied to the table so that the electric device does not get in the way by setting the electric device in the center of the top plate.

In the solar cell panel 2 of the present invention, an emergency portable power source 8 including a battery 7 charged by the solar cell panel 2 can be detachably provided below the top plate 1.
The above solar cell table can be conveniently used as a power source by removing the emergency portable power source from the table in an emergency.

  In the solar cell panel 2 of the present invention, the power feeding area 5 of the top plate 1 has a size capable of placing a plurality of electric devices 50 and 90, and is contactless with the plurality of electric devices 50 and 90 placed on the power feeding area 5. Power can be supplied from the power supply units 3, 103, 203, 303, and 403. The above solar cell table mounts a plurality of electric devices in the power feeding region, and can supply power to these electric devices from the non-contact power supply unit.

Furthermore, the solar cell table of the present invention includes the power transmission coil 11 having a size that allows the contactless power supply unit 303 to supply power to the plurality of electric devices 50 mounted on the power supply region 5, and is mounted on the power supply region 5. Power can be conveyed from the power transmission coil 11 to the power receiving coils 51 of the plurality of electrical devices 50 and power can be simultaneously supplied to the plurality of electrical devices 50.
The above solar cell table can be conveniently used by simultaneously supplying power to the power receiving coils of a plurality of electric devices mounted on the power feeding area.

  Furthermore, in the solar cell table of the present invention, the contactless power supply unit 403 includes a plurality of power transmission coils 11 that supply power to the plurality of electric devices 50 mounted on the power supply region 5, and the plurality of power supply coils 11 are mounted on the power supply region 5. The power receiving coil 51 of the electric device 50 can be supplied with electric power from each power transmission coil 11 and supplied to the plurality of electric devices 50 simultaneously or sequentially.

It is a perspective view of the solar cell table concerning one Example of this invention. It is a top view of the solar cell table shown in FIG. It is a vertical sectional view of the solar cell table shown in FIG. It is a block circuit diagram of the solar cell table concerning one Example of this invention. It is an expanded sectional perspective view of the solar cell table shown in FIG. It is a schematic perspective view which shows the non-contact electric power supply part of the solar cell table shown in FIG. It is a schematic horizontal sectional view which shows the internal structure of the non-contact electric power supply part shown in FIG. It is a vertical longitudinal cross-sectional view of the non-contact electric power supply part shown in FIG. It is a vertical cross-sectional view of the non-contact power supply unit shown in FIG. It is a circuit diagram which shows the position detection controller of a non-contact electric power supply part. It is a block diagram of a non-contact electric power supply part and an electric equipment. It is a figure which shows an example of the echo signal output from the receiving coil excited with the pulse signal. It is a figure which shows the change of the oscillation frequency with respect to the relative position shift of a power transmission coil and a receiving coil. It is a circuit diagram which shows another example of the position detection controller of a non-contact electric power supply part. It is a figure which shows the level of the echo signal induced | guided | derived to the position detection coil of the position detection controller shown in FIG. It is a circuit diagram which shows another example of the position detection controller of a non-contact electric power supply part. It is a figure which shows the change of the voltage of a power transmission coil with respect to the relative position shift of the power transmission coil of a position detection controller shown in FIG. 16, and a receiving coil. It is a figure which shows the change of the power consumption of the alternating current power supply which supplies electric power to a power transmission coil with respect to the relative position shift of the power transmission coil of a position detection controller shown in FIG. It is a figure which shows the change of the electric current of a receiving coil with respect to the relative position shift of the power transmission coil of a position detection controller shown in FIG. 16, and a receiving coil. It is a top view of the solar cell table concerning the other Example of this invention. It is an expanded sectional perspective view of the solar cell table shown in FIG. It is a top view of the solar cell table concerning the other Example of this invention. It is an expanded sectional perspective view of the solar cell table shown in FIG. It is a top view of the solar cell table concerning the other Example of this invention. It is an expanded sectional perspective view of the solar cell table shown in FIG.

  Embodiments of the present invention will be described below with reference to the drawings. However, the Example shown below illustrates the solar cell table for materializing the technical idea of this invention, and this invention does not specify a solar cell table to the following.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  1 is a perspective view of a solar cell table according to an embodiment of the present invention, FIG. 2 is a plan view of the solar cell table shown in FIG. 1, FIG. 3 is a front view of the solar cell table of FIG. FIG. 5 to FIG. 11 show the non-contact power supply unit 3.

  The solar cell table shown in these drawings includes a top plate 1, a solar cell panel 2 fixed to the surface of the top plate 1, and a receiving coil provided on the top plate 1 and placed on the top surface of the top plate 1. A non-contact power supply unit 3 that supplies power to the electric device 50 having 51 and an emergency portable power source 8 that is detachably set under the top plate 1 are provided.

  The non-contact power supply unit 3 includes a power transmission coil 11 that is electromagnetically coupled to the power receiving coil 51 of the electric device 50 and transmits power by a magnetic induction action, an AC power source 12 that supplies AC power to the power transmission coil 11, and a power transmission coil. 11 is provided with a control mechanism 10 that causes the power receiving coil 51 of the electric device 50 placed on the top plate 1 to approach the power receiving coil 51.

  The top plate 1 has the same top surface as the power generation region 4 provided with the solar cell panel 2 and the upper surface of the power supply region 5 for moving the power transmission coil 11 of the contactless power supply unit 3 along the top plate 1. The upper surface of is made planar. In this solar cell table, the power transmission coil 11 is brought close to the power reception coil 51 of the electric device 50 placed on the planar power supply region 5, and power is transferred from the power transmission coil 11 to the power reception coil 51 to supply power to the electric device 50. To do.

  The top plate 1 of FIG. 3 has translucency and waterproofness on the upper surfaces of the power generation region 4 and the power feeding region 5, and is provided with a non-magnetic shielding magneto-optical transmission panel 6 so that the upper surface is planar. The magneto-optical transmission panel 6 is a transparent reinforced plastic panel 6A. The top plate 1 shown in the figure is mounted on the top plate main body 110 so that the reinforced plastic panel 6A can be attached and detached, and the magneto-optical transmission panel 6 is provided on the surface. A reinforced plastic panel is used for the magneto-optical transmission panel 6, and a transparent glass plate can also be used for the magneto-optical transmission panel.

  In the illustrated top plate 1, a peripheral wall 111 is provided on the outer periphery of the top plate main body 110, and a reinforced plastic panel 6 </ b> A of the magneto-optical transmission panel 6 is placed inside the peripheral wall 111. The top plate 1 having this structure can be placed at a fixed position by placing the magneto-optical transmission panel 6 on the top plate body 110 so as to be removable. Therefore, maintenance of the solar cell panel 2 and the non-contact power supply unit 3 can be simplified as a structure in which the magneto-optical transmission panel 6 can be easily detached. The top plate 1 can be easily assembled by assembling the solar cell panel 2 and the non-contact power supply unit 3 to the top plate body 110 and mounting the magneto-optical transmission panel 6 thereon. However, after fixing the solar cell panel and the non-contact power supply unit to the top plate body, the top plate is provided with a transparent reinforced plastic layer on the top surface of the top plate body. Panels can also be provided. In addition, the magneto-optical transmission panel can be fixed at a fixed position on the top surface of the top plate body via an adhesive tape or an adhesive. This top plate can fix the magneto-optical transmission panel to the top plate body without providing a peripheral wall on the outer periphery of the top plate body. The top plate has a structure in which the magneto-optical transmission panel and the top plate main body have the same outer shape, and the magneto-optical transmission panel covers the entire top surface of the top plate main body. As shown in FIG. 3, the top plate body 110 having the peripheral wall 111 on the outer periphery also has a narrow width, so that the outer shape of the magneto-optical transmission panel 6 is almost equal to the outer shape of the top plate body 110. The transmission panel 6 covers almost the entire surface of the top plate body 110.

  The top plate 1 shown in the plan view of FIG. 2 has a central portion as a power feeding region 5 and a solar cell panel 2 provided outside the power feeding region 5 to provide a power generation region 4. In order to provide the non-contact power supply unit 3 and the solar cell panel 2, the top plate body 110 is provided with recesses 112 and 113 that open upward. The top plate main body 110 is provided with a recess 113 for setting the contactless power supply unit 3 at the center, and the contactless power supply unit 3 is set here. The top plate main body 110 shown in the drawing is provided with a recess 113 by disposing a bowl-shaped container 115 having an upper opening in a through hole 114 provided in the center. The container 115 can be formed of a magnetic metal and magnetically shielded, for example. However, the recess for setting the non-contact power supply unit can be provided on the top surface of the top plate body without penetrating the top plate body. Furthermore, the recessed part 112 which sets the solar cell panel 2 is provided in the outer side of the recessed part 113 which sets the non-contact electric power supply part 3, and the solar cell panel 2 is set here.

  Further, the solar cell table of FIGS. 1 and 3 is provided with a storage portion 116 for detachably setting the emergency portable power supply 8 on the lower surface of the top plate 1. In the illustrated top plate 1, a grooved panel 117 having side walls 117 </ b> A on both sides is fixed to the lower surface of the top plate main body 110, and a storage portion 116 is provided on the lower surface of the top plate main body 110. As shown in FIGS. 3 and 4, the emergency portable power supply 8 set in the storage unit 116 is connected to the solar cell panel 2 and charged by the solar cell panel 2. A DC / AC inverter 121 that converts direct current into alternating current of a commercial power source and an outlet 124 connected to the output side of the DC / AC inverter 121 are provided.

  The emergency portable power supply 8 is connected to the solar cell panel 2 and the non-contact power supply unit 3 through a pair of connectors 122 and 123 formed of a male side and a female side. The emergency portable power supply 8 is connected to the solar cell panel 2 and the non-contact power supply unit 3 by inserting a male connector into the female connector while being set in the storage unit 116. The female connector is fixed to the back surface of the emergency portable power supply 8, and the male connector is fixed to the inner surface of the storage portion 116 and the surface facing the back surface of the emergency portable power supply 8. In this structure, the emergency portable power supply 8 can be inserted into the storage section 116 and connected to the solar cell panel 2 and the non-contact power supply section 3 via the connectors 122 and 123. In the state set to 116, the built-in battery 7 is charged with the generated power of the solar battery panel 2, and the power of the built-in battery 7 can be supplied to the contactless power supply unit 3.

  The battery 7 of the emergency portable power supply 8 is charged with the output of the solar battery panel 2 via the charging circuit 120. The charging circuit 120 charges the battery 7 with the output of the solar battery panel 2, detects full charge of the battery 7, and stops charging. As the battery 7, any rechargeable battery such as a lithium ion battery, a nickel hydrogen battery, or a nickel cadmium battery can be used.

  The DC / AC inverter 121 converts the direct current of the battery 7 into the alternating current of the commercial power source and outputs it to the outlet 124. For example, the DC / AC inverter 121 outputs an alternating current having a frequency of 50 Hz to 60 Hz and a voltage of 100V. The DC / AC inverter 121 operates by detecting that an external device is connected to the outlet 124, or operates by providing a power switch 125 and turning on the power switch 125. Output power.

  5 to 11 show a schematic configuration diagram and a principle diagram of the non-contact power supply unit 3. As shown in FIGS. 5, 6, and 11, the non-contact power supply unit 3 places the electrical device 50 on the top and supplies power to the electrical device 50. The electric device 50 charges the built-in battery 52 with the power supplied from the non-contact power supply unit 3 using a mobile phone or a lantern that incorporates the battery 52. However, an electric device such as a lantern can light the lantern with electric power supplied from a non-contact power supply unit without charging a built-in battery.

  The electric device 50 includes a power receiving coil 51 that is electromagnetically coupled to the power transmitting coil 11. Furthermore, the electric device 50 has a built-in battery 52 that is charged by the power induced in the power receiving coil 51 or a light source that is turned on by the power induced in the power receiving coil. In addition, a battery pack can be used for the electric device. The battery pack is charged with power supplied from a non-contact power supply unit.

  FIG. 11 shows a circuit diagram of the electric device 50 that charges the built-in battery 52 with the power supplied from the non-contact power supply unit 3. In the electric device 50, a capacitor 53 is connected in parallel with the power receiving coil 51. The capacitor 53 and the power receiving coil 51 constitute a parallel resonance circuit 54. The resonance frequency of the capacitor 53 and the power receiving coil 51 can be efficiently conveyed from the power transmitting coil 11 to the power receiving coil 51 as a frequency that approximates the frequency of power conveyed from the power transmitting coil 11. The electric device 50 in FIG. 11 is output from the rectifier circuit 57 including a diode 55 that rectifies the alternating current output from the power receiving coil 51, a smoothing capacitor 56 that smoothes the rectified pulsating current, and the rectifier circuit 57. And a charge control circuit 58 that charges the battery 52 with a direct current. The charge control circuit 58 detects full charge of the battery 52 and stops charging.

  Although not shown, an electric device such as a lantern that lights a light source with power supplied from a non-contact power supply unit includes a constant voltage circuit that stabilizes the direct current output from the rectifier circuit to a constant voltage. In this electrical device, the output of the constant voltage circuit is connected to the light source, and the light source is turned on by the output of the constant voltage circuit. Moreover, not only an electric apparatus provided with a light source but an electric apparatus such as a radio can be operated by the output of a constant voltage circuit. That is, the power source power output from the constant voltage circuit can be used as power source power for all electrical devices.

  As shown in FIGS. 6 to 11, the non-contact power supply unit 3 includes a power transmission coil 11 that is electromagnetically coupled to the power reception coil 51 and transmits power by a magnetic induction action, and an alternating current that supplies AC power to the power transmission coil 11. The power supply 12 and the control mechanism 10 that brings the power transmission coil 11 closer to the power reception coil 51 of the electric device 50 placed on the top plate 1 are provided. The illustrated non-contact power supply unit 3 includes a case 20 having an upper surface plate 21 on an upper surface, and the case 20 incorporates a power transmission coil 11, an AC power source 12, and a control mechanism 10. The control mechanism 10 is positioned above the upper surface plate 21 and is controlled by the position detection controller 14 that detects the position of the electric device 50 placed on the power feeding region 5 of the top plate 1 and the position detection controller 14. And a moving mechanism 13 that moves the power transmission coil 11 along the inner surface of the upper surface plate 21. Furthermore, the non-contact power supply unit 3 shown in the figure includes a recognition indicator 40 that recognizes and displays an electric device 50 placed on the power feeding region 5 of the top plate 1.

The contactless power supply unit 3 charges the built-in battery 52 of each electrical device 50 by the following operation when a plurality of electrical devices 50 are mounted on the power feeding region 5 of the top plate 1.
(1) The recognition indicator 40 recognizes each electric device 50 placed on the power feeding area 5 of the top plate 1 of the case 20 and displays it on the display unit 41. For example, when three electrical devices 50 are placed on the power feeding area 5 of the top board 1, the display unit 41 lights up the three pilot lamps 42 to indicate that the three electrical devices 50 have been recognized.
(2) The position detection controller 14 detects the position of each electric device 50.
(3) The position detection controller 14 controls the movement mechanism 13 to move the power transmission coil 11 along the upper surface plate 21 with the movement mechanism 13, and to the power reception coil 51 of the electric device 50 that preferentially charges. Move closer.
(4) The power transmission coil 11 approaching the power reception coil 51 is electromagnetically coupled to the power reception coil 51 and carries AC power to the power reception coil 51.
(5) The electric device 50 rectifies the AC power of the power receiving coil 51 and converts it to DC, and charges the built-in battery 52 with this DC.
(6) When the built-in battery 52 of the first electric device 50 is fully charged, the position detection controller 14 brings the power transmission coil 11 close to the power receiving coil 51 of the electric device 50 to be charged next, and the electric device 50 The built-in battery 52 is charged.

  The contactless power supply unit 3 that charges the battery 52 of the electric device 50 by the above operation has the power transmission coil 11 connected to the AC power supply 12 built in the case 20. The power transmission coil 11 is disposed under the upper surface plate 21 of the case 20 so as to move along the upper surface plate 21. Therefore, a region located on the top surface of the top plate 1 and above the top plate 21 is the power feeding region 5 described above. The efficiency of power transfer from the power transmission coil 11 to the power reception coil 51 can be improved by narrowing the interval between the power transmission coil 11 and the power reception coil 51. Preferably, the distance between the power transmission coil 11 and the power reception coil 51 is set to 7 mm or less while the power transmission coil 11 is approaching the power reception coil 51. Therefore, the power transmission coil 11 is disposed below the top plate 21 and as close to the top plate 21 as possible. Since the power transmission coil 11 moves so as to approach the power receiving coil 51 of the electric device 50 placed on the top plate 1 disposed on the upper surface plate 21, it can move along the lower surface of the upper surface plate 21. Arranged.

  The case 20 containing the power transmission coil 11 is provided with a planar upper surface plate 21 on which the electric device 50 is placed on the upper surface. In the illustrated non-contact power supply unit 3, the entire top plate 21 is horizontally arranged in a flat shape. The upper surface plate 21 has a size that allows a plurality of electrical devices 50 having different sizes and outer shapes to be arranged in the power supply region 5, for example, a quadrangle having one side of 5 cm to 30 cm. However, the top plate may be circular with a diameter of 7 cm to 30 cm. The non-contact power supply unit 3 can charge the built-in battery in order by placing a plurality of electric devices together with the upper surface plate having such a size that a larger number of electric devices can be simultaneously mounted on the power feeding region.

  The power transmission coil 11 is a planar coil wound in a spiral shape on a surface parallel to the upper surface plate 21, and radiates an alternating magnetic flux above the upper surface plate 21. The power transmission coil 11 radiates an alternating magnetic flux orthogonal to the upper surface plate 21 above the upper surface plate 21. The power transmission coil 11 is supplied with AC power from the AC power source 12 and radiates AC magnetic flux above the upper surface plate 21. The power transmission coil 11 can increase the inductance by winding a wire around a core 15 made of a magnetic material. The core 15 is made of a magnetic material such as ferrite having a high magnetic permeability, and has a bowl shape that opens upward. The bowl-shaped core 15 has a shape in which a columnar portion 15A disposed at the center of a power transmission coil 11 wound in a spiral shape and a cylindrical portion 15B disposed on the outside are connected at the bottom. The power transmission coil 11 having the core 15 can concentrate the magnetic flux to a specific portion and efficiently transmit power to the power reception coil 51. However, the power transmission coil does not necessarily need to be provided with a core, and may be an air-core coil. Since the air-core coil is light, a moving mechanism for moving it on the inner surface of the upper plate can be simplified. The power transmission coil 11 is substantially equal to the outer diameter of the power reception coil 51 and efficiently conveys power to the power reception coil 51.

  The AC power supply 12 converts the power input from the solar battery panel 2 and the power input from the battery 7 of the emergency portable power supply 8 into, for example, high frequency power of 20 kHz to 1 MHz and supplies the power to the power transmission coil 11. The AC power source 12 connects the solar cell panel 2 and the battery 7 via a diode 126 on the input side. When the voltage of the solar battery panel 2 is higher than that of the battery 7, the AC power supply 12 having this circuit configuration is supplied with power from the solar battery panel 2, and the voltage of the battery 7 is higher than that of the solar battery panel 2. Electric power is supplied from the battery 7. As described above, the AC power supply 12 that supplies power from both the solar battery panel 2 and the battery 7 can supply power from the battery 7 in a state where the output of the solar battery panel 2 is not sufficient. Thus, high-frequency power can be output and power can be supplied to the electrical device 50.

  The AC power supply 12 is connected to the power transmission coil 11 via a flexible lead wire 16. This is because the power transmission coil 11 is moved so as to approach the power reception coil 51 of the electric device 50 placed on the power supply region 5 of the top plate 1. Although not shown, the AC power source 12 includes a self-excited oscillation circuit and a power amplifier that amplifies the AC output from the oscillation circuit. The self-excited oscillation circuit uses the power transmission coil 11 in combination with the oscillation coil. Therefore, the oscillation frequency of this oscillation circuit changes due to the inductance of the power transmission coil 11. The inductance of the power transmission coil 11 changes at the relative position between the power transmission coil 11 and the power reception coil 51. This is because the mutual inductance between the power transmission coil 11 and the power reception coil 51 changes at the relative position between the power transmission coil 11 and the power reception coil 51. Therefore, the self-excited oscillation circuit that uses the power transmission coil 11 as the oscillation coil changes as the AC power supply 12 approaches the power reception coil 51. For this reason, the self-excited oscillation circuit can detect the relative position between the power transmission coil 11 and the power reception coil 51 by a change in the oscillation frequency, and can be used together with the position detection controller 14.

  The power transmission coil 11 is moved by the moving mechanism 13 so as to approach the power reception coil 51. The moving mechanism 13 in FIGS. 6 to 9 moves the power transmission coil 11 along the top plate 21 in the X-axis direction and the Y-axis direction to approach the power receiving coil 51. The moving mechanism 13 shown in the figure rotates the screw rod 23 by the servo motor 22 controlled by the position detection controller 14 to move the nut member 24 screwed into the screw rod 23, and the power transmission coil 11 is moved to the power receiving coil 51. To approach. The servo motor 22 includes an X-axis servo motor 22A that moves the power transmission coil 11 in the X-axis direction, and a Y-axis servo motor 22B that moves the Y-axis direction. The screw rod 23 includes a pair of X-axis screw rods 23A that move the power transmission coil 11 in the X-axis direction, and a Y-axis screw rod 23B that moves the power transmission coil 11 in the Y-axis direction. The pair of X-axis screw rods 23A are arranged in parallel to each other, driven by the belt 25, and rotated together by the X-axis servomotor 22A. The nut member 24 includes a pair of X-axis nut members 24A screwed into the respective X-axis screw rods 23A, and a Y-axis nut member 24B screwed into the Y-axis screw rods 23B. The Y-axis screw rod 23B is coupled so that both ends thereof can be rotated to a pair of X-axis nut members 24A. The power transmission coil 11 is connected to the Y-axis nut member 24B.

  Further, the moving mechanism 13 shown in the figure has a guide rod 26 disposed in parallel with the Y-axis screw rod 23B in order to move the power transmission coil 11 in the Y-axis direction in a horizontal posture. Both ends of the guide rod 26 are connected to the pair of X-axis nut members 24A and move together with the pair of X-axis nut members 24A. The guide rod 26 penetrates the guide portion 27 coupled to the power transmission coil 11 so that the power transmission coil 11 can be moved along the guide rod 26 in the Y-axis direction. That is, the power transmission coil 11 moves in the Y-axis direction in a horizontal posture via the Y-axis nut member 24 </ b> B and the guide portion 27 that move along the Y-axis screw rod 23 </ b> B and the guide rod 26 arranged in parallel to each other. To do.

  In the moving mechanism 13, when the X-axis servomotor 22A rotates the X-axis screw rod 23A, the pair of X-axis nut members 24A move along the X-axis screw rod 23A, and the Y-axis screw rod 23B and the guide rod 26 is moved in the X-axis direction. When the Y-axis servo motor 22B rotates the Y-axis screw rod 23B, the Y-axis nut member 24B moves along the Y-axis screw rod 23B, and moves the power transmission coil 11 in the Y-axis direction. At this time, the guide part 27 connected to the power transmission coil 11 moves along the guide rod 26 to move the power transmission coil 11 in the Y-axis direction in a horizontal posture. Therefore, the rotation of the X-axis servomotor 22A and the Y-axis servomotor 22B can be controlled by the position detection controller 14, and the power transmission coil 11 can be moved in the X-axis direction and the Y-axis direction. However, the non-contact power supply unit does not specify the moving mechanism as the above mechanism. This is because any mechanism that can move the power transmission coil in the X-axis direction and the Y-axis direction can be used as the moving mechanism.

  The position detection controller 14 detects the position of the electric device 50 placed on the power feeding area 5 of the top board 1. The position detection controller 14 of FIGS. 6 to 9 detects the position of the power receiving coil 51 built in the electric device 50, and causes the power transmitting coil 11 to approach the power receiving coil 51. Further, the position detection controller 14 includes a first position detection controller 14A that roughly detects the position of the power receiving coil 51, and a second position detection controller 14B that precisely detects the position of the power receiving coil 51. The position detection controller 14 roughly detects the position of the power receiving coil 51 by the first position detection controller 14A, and controls the moving mechanism 13 to bring the position of the power transmitting coil 11 closer to the power receiving coil 51. Further, the moving mechanism 13 is controlled while precisely detecting the position of the power receiving coil 51 by the second position detection controller 14B, so that the position of the power transmitting coil 11 is brought close to the power receiving coil 51 accurately. This non-contact power supply unit 3 can quickly and more accurately approach the power transmission coil 11 to the power reception coil 51.

  As shown in FIG. 10, the first position detection controller 14 </ b> A includes a plurality of position detection coils 30 fixed to the inner surface of the upper surface plate 21 and arranged close to the surface of the top plate 1, and this position detection. A pulse power supply 31 that supplies a pulse signal to the coil 30 and a receiving circuit that receives an echo signal that is excited by a pulse supplied from the pulse power supply 31 to the position detection coil 30 and that is output from the power reception coil 51 to the position detection coil 30. 32 and an identification circuit 33 for determining the position of the power transmission coil 11 from the echo signal received by the receiving circuit 32.

  The position detection coil 30 includes a plurality of rows of coils, and the plurality of position detection coils 30 are fixed to the inner surface of the upper surface plate 21 at a predetermined interval. The position detection coil 30 includes a plurality of X-axis detection coils 30A that detect the position of the power receiving coil 51 in the X-axis direction, and a plurality of Y-axis detection coils 30B that detect a position in the Y-axis direction. Each X-axis detection coil 30A has a loop shape elongated in the Y-axis direction, and the plurality of X-axis detection coils 30A are fixed to the inner surface of the upper surface plate 21 at a predetermined interval. The interval (d) between the adjacent X-axis detection coils 30A is smaller than the outer diameter (D) of the power receiving coil 51. Preferably, the interval (d) between the X-axis detection coils 30A is equal to the outer diameter (D) of the power receiving coil 51. 1 times to 1/4 times. The X-axis detection coil 30A can accurately detect the position of the power receiving coil 51 in the X-axis direction by narrowing the interval (d). Each Y-axis detection coil 30B has a loop shape elongated in the X-axis direction, and the plurality of Y-axis detection coils 30B are fixed to the inner surface of the upper surface plate 21 at a predetermined interval. Similarly to the X-axis detection coil 30A, the interval (d) between the adjacent Y-axis detection coils 30B is also smaller than the outer diameter (D) of the power receiving coil 51, and preferably the interval (d) between the Y-axis detection coils 30B. The outer diameter (D) of the power receiving coil 51 is set to 1 to 1/4 times. The Y-axis detection coil 30B can also accurately detect the position of the power receiving coil 51 in the Y-axis direction by narrowing the interval (d).

  The pulse power supply 31 outputs a pulse signal to the position detection coil 30 at a predetermined timing. The position detection coil 30 to which the pulse signal is input excites the power receiving coil 51 that approaches with the pulse signal. The excited power receiving coil 51 outputs an echo signal to the position detection coil 30 with the energy of the flowing current. Therefore, as shown in FIG. 12, the position detection coil 30 near the power receiving coil 51 is guided by a predetermined time after the pulse signal is input, and the echo signal from the power receiving coil 51 is induced. The echo signal induced in the position detection coil 30 is output to the identification circuit 33 by the reception circuit 32. Therefore, the identification circuit 33 determines whether or not the power receiving coil 51 is approaching the position detection coil 30 with the echo signal input from the receiving circuit 32. When echo signals are induced in the plurality of position detection coils 30, the identification circuit 33 determines that the position detection coil 30 with the highest echo signal level is closest.

  The position detection controller 14 shown in FIG. 10 connects each position detection coil 30 to the reception circuit 32 via the switching circuit 34. Since the position detection controller 14 switches the inputs in order and connects them to the plurality of position detection coils 30, the single reception circuit 32 can detect the echo signals of the plurality of position detection coils 30. However, an echo signal can also be detected by connecting a receiving circuit to each position detection coil.

  The position detection controller 14 in FIG. 10 switches the plurality of position detection coils 30 in order by the switching circuit 34 controlled by the identification circuit 33 and connects to the receiving circuit 32. The pulse power supply 31 is connected to the output side of the switching circuit 34 and outputs a pulse signal to the position detection coil 30. The level of the pulse signal output from the pulse power supply 31 to the position detection coil 30 is extremely higher than the echo signal from the power receiving coil 51. The receiving circuit 32 has a limiter circuit 35 made of a diode connected to the input side. The limiter circuit 35 limits the signal level of the pulse signal input from the pulse power supply 31 to the reception circuit 32 and inputs the pulse signal to the reception circuit 32. An echo signal having a low signal level is input to the receiving circuit 32 without being limited. The receiving circuit 32 amplifies and outputs both the pulse signal and the echo signal. The echo signal output from the receiving circuit 32 is a signal delayed from the pulse signal by a predetermined timing, for example, several μsec to several hundred μsec. Since the delay time that the echo signal is delayed from the pulse signal is a fixed time, the signal after a predetermined delay time from the pulse signal is used as an echo signal, and the receiving coil 51 approaches the position detection coil 30 from the level of this echo signal. Determine whether or not.

  The reception circuit 32 is an amplifier that amplifies and outputs an echo signal input from the position detection coil 30. The receiving circuit 32 outputs a pulse signal and an echo signal. The identification circuit 33 determines whether or not the power reception coil 51 is set close to the position detection coil 30 from the pulse signal and echo signal input from the reception circuit 32. The identification circuit 33 includes an A / D converter 36 that converts a signal input from the reception circuit 32 into a digital signal. The digital signal output from the A / D converter 36 is calculated to detect an echo signal. The identification circuit 33 detects a signal input after a specific delay time from the pulse signal as an echo signal, and further determines whether the power receiving coil 51 is approaching the position detection coil 30 from the level of the echo signal.

  The identification circuit 33 detects the position of the power receiving coil 51 in the X-axis direction by controlling the switching circuit 34 so that the plurality of X-axis detection coils 30A are connected to the receiving circuit 32 in order. The identification circuit 33 outputs a pulse signal to the X-axis detection coil 30A connected to the identification circuit 33 every time each X-axis detection coil 30A is connected to the reception circuit 32, and a specific delay time is determined from the pulse signal. Later, whether or not the power receiving coil 51 is approaching the X-axis detection coil 30A is determined based on whether or not an echo signal is detected. The identification circuit 33 connects all the X-axis detection coils 30A to the reception circuit 32, and determines whether or not the power reception coils 51 are close to the respective X-axis detection coils 30A. When the power receiving coil 51 approaches one of the X axis detection coils 30 </ b> A, an echo signal is detected in a state where the X axis detection coil 30 </ b> A is connected to the reception circuit 32. Therefore, the identification circuit 33 can detect the position of the power receiving coil 51 in the X-axis direction from the X-axis detection coil 30A that can detect an echo signal. In a state in which the power receiving coil 51 approaches across the plurality of X-axis detection coils 30A, echo signals are detected from the plurality of X-axis detection coils 30A. In this state, the identification circuit 33 determines that it is closest to the X-axis detection coil 30A from which the strongest echo signal, that is, the echo signal having a high level is detected. The identification circuit 33 similarly controls the Y-axis detection coil 30B to detect the position of the power receiving coil 51 in the Y-axis direction.

  The identification circuit 33 controls the moving mechanism 13 from the detected X-axis direction and Y-axis direction to move the power transmission coil 11 to a position approaching the power reception coil 51. The identification circuit 33 controls the X-axis servomotor 22 </ b> A of the moving mechanism 13 to move the power transmission coil 11 to the position of the power reception coil 51 in the X-axis direction. Further, the Y-axis servomotor 22B of the moving mechanism 13 is controlled to move the power transmission coil 11 to the position of the power reception coil 51 in the Y-axis direction.

  As described above, the first position detection controller 14 </ b> A moves the power transmission coil 11 to a position approaching the power reception coil 51. The non-contact power supply unit 3 can charge the battery 52 by transferring power from the power transmission coil 11 to the power reception coil 51 after the power transmission coil 11 approaches the power reception coil 51 by the first position detection controller 14A. However, the non-contact power supply unit 3 can further accurately control the position of the power transmission coil 11 to approach the power reception coil 51 and then carry power to charge the battery 52. The power transmission coil 11 is more accurately approached to the power reception coil 51 by the second position detection controller 14B.

  The second position detection controller 14B controls the moving mechanism 13 by accurately detecting the position of the power transmission coil 11 from the oscillation frequency of the self-excited oscillation circuit using the AC power supply 12 as a self-excited oscillation circuit. The second position detection controller 14B controls the X-axis servo motor 22A and the Y-axis servo motor 22B of the moving mechanism 13 to move the power transmission coil 11 in the X-axis direction and the Y-axis direction. Detect the oscillation frequency. FIG. 13 shows the characteristic that the oscillation frequency of the self-excited oscillation circuit changes. This figure shows the change of the oscillation frequency with respect to the relative displacement between the power transmission coil 11 and the power reception coil 51. As shown in this figure, the oscillation frequency of the self-excited oscillation circuit is highest at a position where the power transmission coil 11 is closest to the power reception coil 51, and the oscillation frequency is lowered as the relative position is shifted. Therefore, the second position detection controller 14B controls the X-axis servomotor 22A of the moving mechanism 13 to move the power transmission coil 11 in the X-axis direction, and stops at the position where the oscillation frequency becomes the highest. The Y-axis servo motor 22B is similarly controlled to move the power transmission coil 11 in the Y-axis direction and stop at the position where the oscillation frequency becomes the highest. The second position detection controller 14B can move the power transmission coil 11 to the position closest to the power reception coil 51 as described above.

  The non-contact power supply unit 3 described above, after coarsely detecting the position of the power receiving coil 51 by the first position detection controller 14A, is further finely adjusted by the second position detection controller 14B to make the power transmission coil 11 the power receiving coil. The following position detection controller 64 shown in FIG. 14 can bring the power transmission coil 11 closer to the power reception coil 51 without fine adjustment.

  As shown in FIG. 14, the position detection controller 64 includes a plurality of position detection coils 30 fixed to the inner surface of the upper surface plate and arranged close to the surface of the top plate, and a pulse applied to the position detection coil 30. A pulse power supply 31 for supplying a signal, a receiving circuit 32 for receiving an echo signal that is excited by a pulse supplied from the pulse power supply 31 to the position detection coil 30 and output from the power reception coil 51 to the position detection coil 30; And an identification circuit 73 for determining the position of the power transmission coil 11 from the echo signal received by the reception circuit 32. Further, the position detection controller 64 causes the discrimination circuit 73 to detect the level of the echo signal induced in each position detection coil 30 with respect to the position of the power receiving coil 51, that is, as shown in FIG. Is stored with a storage circuit 77 for storing the level of an echo signal that is induced after a predetermined time has passed. The position detection controller 64 detects the level of the echo signal induced in each position detection coil 30, compares the level of the detected echo signal with the level of the echo signal stored in the storage circuit 77, and The position of the power receiving coil 51 is detected.

  The position detection controller 64 obtains the position of the power receiving coil 51 from the level of the echo signal induced in each position detection coil 30 as follows. The position detection coil 30 shown in FIG. 14 includes a plurality of X-axis detection coils 30A that detect the position of the power receiving coil 51 in the X-axis direction, and a plurality of Y-axis detection coils 30B that detect the position in the Y-axis direction. A plurality of position detection coils 30 are fixed to the inner surface of the upper surface plate 21 at a predetermined interval. Each X-axis detection coil 30A has an elongated loop shape in the Y-axis direction, and each Y-axis detection coil 30B has an elongated loop shape in the X-axis direction. FIG. 14 shows the level of the echo signal induced in the X-axis position detection coil 30A in a state where the power receiving coil 51 is moved in the X-axis direction, and the horizontal axis shows the position of the power receiving coil 51 in the X-axis direction. The vertical axis indicates the level of the echo signal induced in each X-axis position detection coil 30A. The position detection controller 64 can determine the position of the power receiving coil 51 in the X-axis direction by detecting the level of the echo signal induced in each X-axis position detection coil 30A. As shown in this figure, when the power receiving coil 51 is moved in the X-axis direction, the level of the echo signal induced in each X-axis position detection coil 30A changes. For example, when the center of the power receiving coil 51 is at the center of the first X-axis position detection coil 30A, the level of the echo signal induced in the first X-axis position detection coil 30A as shown by the point A in FIG. Is the strongest. Further, when the power receiving coil 51 is in the middle of the first X-axis position detection coil 30A and the second X-axis position detection coil 30A, as shown by a point B in FIG. 10, the first X-axis position detection coil 30A. And the level of the echo signal induced in the second X-axis position detection coil 30A is the same. That is, in each X-axis position detection coil 30A, the level of the echo signal that is induced when the power receiving coil 51 is closest is the strongest, and the level of the echo signal decreases as the power receiving coil 51 moves away. Therefore, it can be determined which X-axis position detection coil 30A is closest to the power receiving coil 51 depending on which X-axis position detection coil 30A has the strongest echo signal level. Also, when an echo signal is induced in the two X-axis position detection coils 30A, in which direction the echo signal is induced from the X-axis position detection coil 30A that detects a strong echo signal. Thus, it can be determined in which direction the power receiving coil 51 is shifted from the X-axis position detecting coil 30A having the strongest echo signal, and the relative position between the two X-axis position detecting coils 30A can be determined by the level ratio of the echo signal. Can be judged. For example, if the level ratio of the echo signals of the two X-axis position detection coils 30A is 1, it can be determined that the power receiving coil 51 is located at the center of the two X-axis position detection coils 30A.

  The identification circuit 73 stores the level of the echo signal induced in each X-axis position detection coil 30 </ b> A with respect to the X-axis direction position of the power receiving coil 51 in the storage circuit 77. When the power receiving coil 51 is placed, an echo signal is induced in one of the X-axis position detection coils 30A. Therefore, the identification circuit 73 detects that the power receiving coil 51 has been placed by an echo signal induced in the X-axis position detection coil 30 </ b> A, that is, that the electric device 50 has been placed on the non-contact power supply unit 3. Furthermore, the position of the power receiving coil 51 in the X-axis direction can be determined by comparing the level of the echo signal induced in any of the X-axis position detection coils 30 </ b> A with the level stored in the storage circuit 77. . The identification circuit stores in the storage circuit a function that specifies the position of the receiving coil in the X-axis direction from the level ratio of the echo signal induced in the adjacent X-axis position detection coil, and determines the position of the receiving coil from this function You can also This function is obtained by moving the power receiving coil between the two X-axis position detection coils and detecting the level ratio of the echo signal induced in each X-axis position detection coil. The identification circuit 73 detects the level ratio of echo signals induced in the two X-axis position detection coils 30A, and receives power between the two X-axis position detection coils 30A based on this function from the detected level ratio. The position of the coil 51 in the X-axis direction can be calculated and detected.

  The above shows a method in which the identification circuit 73 detects the position of the power receiving coil 51 in the X-axis direction from the echo signal induced in the X-axis position detection coil 30A, but the position of the power receiving coil 51 in the Y-axis direction is also X. In the same manner as in the axial direction, it can be detected from the echo signal induced in the Y-axis position detection coil 30B.

  When the identification circuit 73 detects the positions of the power receiving coil 51 in the X-axis direction and the Y-axis direction, the position detection controller 64 moves the power transmission coil 11 to the position of the power receiving coil 51 with the position signal from the identification circuit 73. Let

  When the echo signal having the waveform as described above is detected, the identification circuit 73 of the non-contact power supply unit 3 can recognize and identify that the power receiving coil 51 of the electric device 50 is mounted. When a waveform different from the waveform of the echo signal is detected and identified, it is possible to stop the power supply on the assumption that a device other than the power receiving coil 51 of the electric device 50 (for example, a metal foreign object) is mounted. Further, when the waveform of the echo signal is not detected or identified, it is assumed that the power receiving coil 51 of the electric device 50 is not mounted and power is not supplied.

  The non-contact power supply unit 3 supplies AC power to the power transmission coil 11 with the AC power source 12 in a state where the position detection controllers 14 and 64 control the moving mechanism 13 to bring the power transmission coil 11 closer to the power reception coil 51. . The AC power of the power transmission coil 11 is transferred to the power reception coil 51 and used for charging the battery 52. When the electric device 50 detects that the battery 52 is fully charged, the electric device 50 stops charging and transmits a full charge signal to the contactless power supply unit 3. The electric device 50 can output a full charge signal to the power receiving coil 51, transmit this full charge signal from the power receiving coil 51 to the power transmission coil 11, and transmit full charge information to the non-contact power supply unit 3. . The electric device 50 outputs an AC signal having a frequency different from that of the AC power supply 12 to the power receiving coil 51, and the non-contact power supply unit 3 can receive the AC signal by the power transmission coil 11 and detect full charge. In addition, the electric device 50 outputs a signal for modulating a carrier wave of a specific frequency with a full charge signal to the power receiving coil 51, and the non-contact power supply unit 3 receives the carrier wave of the specific frequency, and demodulates this signal to generate a full charge signal. Can also be detected. Furthermore, the electric device can also transmit full charge information by wirelessly transmitting a full charge signal to the non-contact power supply unit. This electrical device has a built-in transmitter that transmits a full charge signal, and the non-contact power supply unit has a built-in receiver that receives the full charge signal. The position detection controller 14 shown in FIG. 11 includes a full charge detection circuit 17 that detects the full charge of the internal battery 52. The full charge detection circuit 17 detects a full charge signal output from the electric device 50 to detect full charge of the battery 52.

  The second position detection controller 14B shown in FIG. 11 determines the relative position between the power transmission coil 11 and the power reception coil 51 from the change in the oscillation frequency of the self-excited oscillation circuit. The second position detection controller 14B determines the relative position between the power transmission coil and the power reception coil. The second position detection controller for fine adjustment detects the relative position of the power transmission coil with respect to the power reception coil from the voltage of the power transmission coil, the power consumption of the AC power supply that supplies power to the power transmission coil, or the current induced in the power reception coil. be able to. Since the second position detection controller does not need to change the oscillation frequency, it can be a separately-excited oscillation circuit.

  In FIG. 16, the second position detection controller 14 </ b> C that detects the relative position of the power transmission coil 11 with respect to the power reception coil 51 from the voltage of the power transmission coil 11 rectifies the AC voltage generated in the power transmission coil 11 to a DC voltage. A voltage detection circuit 83 for converting and detecting the voltage is incorporated. The second position detection controller 14 </ b> C moves the power transmission coil 11 and detects the voltage of the power transmission coil 11 with the voltage detection circuit 83. The characteristic that the voltage of the power transmission coil 11 changes with respect to the relative position of the power transmission coil 11 and the power reception coil 51 is shown in FIG. This figure shows a change in the voltage of the power transmission coil 11 with respect to the relative displacement between the power transmission coil 11 and the power reception coil 51. As shown in this figure, the voltage of the power transmission coil 11 is lowest at the position where the power transmission coil 11 is closest to the power reception coil 51, and the voltage is increased as the relative position is shifted. Therefore, the second position detection controller 14C controls the X-axis servomotor 22A of the moving mechanism 13 to move the power transmission coil 11 in the X-axis direction, and stops at a position where the voltage of the power transmission coil 11 is lowest. The Y-axis servomotor 22B is similarly controlled to move the power transmission coil 11 in the Y-axis direction and stop at a position where the voltage of the power transmission coil 11 is lowest. The second position detection controller 14 </ b> C can move the power transmission coil 11 to the position closest to the power reception coil 51 as described above.

  Further, in FIG. 16, the second position detection controller 14 </ b> C that detects the relative position of the power transmission coil 11 with respect to the power receiving coil 51 from the power consumption of the AC power supply 82 that supplies power to the power transmission coil 11 includes the power consumption of the AC power supply 82. Is incorporated. The second position detection controller 14 </ b> C moves the power transmission coil 11 and detects the power consumption of the AC power supply 82 by the power consumption detection circuit 84. The characteristic that the power consumption of the AC power supply 82 changes with respect to the relative position of the power transmission coil 11 and the power reception coil 51 is shown in FIG. This figure shows a change in the power consumption of the AC power supply 82 with respect to the relative displacement between the power transmission coil 11 and the power reception coil 51. As shown in this figure, the power consumption of the AC power source 82 is the smallest at the position where the power transmission coil 11 is closest to the power receiving coil 51, and the power consumption is increased as the relative position is shifted. Therefore, the second position detection controller 14C controls the X-axis servomotor 22A of the moving mechanism 13 to move the power transmission coil 11 in the X-axis direction, and stops at a position where the power consumption of the AC power supply 82 is minimized. . The Y-axis servo motor 22B is similarly controlled to move the power transmission coil 11 in the Y-axis direction and stop at a position where the power consumption of the AC power supply 82 is lowest. The second position detection controller 14 </ b> C can move the power transmission coil 11 to the position closest to the power reception coil 51 as described above.

  Further, in FIG. 16, the second position detection controller 14 </ b> C that detects the relative position of the power transmission coil 11 with respect to the power reception coil 51 from the current of the power reception coil 51 includes a circuit that detects the current of the power reception coil 51. . The second position detection controller 14C includes a transmission circuit 95 that modulates a carrier wave with a current detected by detecting the current of the power receiving coil 51 on the electric device 90 side, and wirelessly transmits it to the non-contact power supply unit 103. A non-contact power supply unit 103 receives a signal transmitted from the transmission circuit 95 and demodulates the signal to detect a current in the power receiving coil 51. The second position detection controller 14 </ b> C detects the current of the power receiving coil 51 by moving the power transmitting coil 11. FIG. 19 shows characteristics in which the current of the power receiving coil 51 changes with respect to the relative position between the power transmitting coil 11 and the power receiving coil 51. This figure shows the change of the power receiving coil 51 with respect to the relative displacement between the power transmitting coil 11 and the power receiving coil 51. As shown in this figure, the current of the power receiving coil 51 is the largest at the position where the power transmitting coil 11 is closest to the power receiving coil 51, and the current becomes smaller as the relative position is shifted. Therefore, the second position detection controller 14C controls the X-axis servomotor 22A of the moving mechanism 13 to move the power transmission coil 11 in the X-axis direction, and stops at the position where the current of the power reception coil 51 becomes the largest. The Y-axis servo motor 22B is similarly controlled to move the power transmission coil 11 in the Y-axis direction and stop at a position where the current of the power reception coil 51 becomes the largest. The second position detection controller 14 </ b> C can move the power transmission coil 11 to the position closest to the power reception coil 51 as described above.

  The above moving mechanism 13 moves the power transmission coil 11 in the X-axis direction and the Y-axis direction, and moves the power transmission coil 11 to the position closest to the power receiving coil 51. The power transmission coil is moved in the X-axis direction and the Y-axis direction, and the position of the power transmission coil is not specified to be close to the power reception coil, and the power transmission coil is moved in various directions to approach the power reception coil. You can also.

  The non-contact power supply unit 3 fully charges the batteries 52 of the plurality of electric devices 50 mounted on the power feeding region 5 of the top board 1 in a specific order. The position detection controllers 14 and 64 store the order in which the batteries 52 of the respective electric devices 50 are charged in the memory 38. The position detection controllers 14 and 64 specify the order of charging the batteries 52 of the respective electric devices 50 placed on the power supply area 5 of the top plate 1 at the position facing the top plate 21, that is, the position of the power supply area 5. It is memorized as the order of positions. The order of the positions is, for example, the order in which the electric device 50 placed on the left side of the power feeding region 5 is preferentially charged on the paper surface of FIGS. 2 and 5. For example, as shown in FIGS. 2 and 5, the position detection controllers 14 and 64 have the leftmost first electric device 50 </ b> A when the three electric devices 50 are placed on the power feeding region 5 of the top plate 1. The battery 52 is preferentially charged, the battery 52 of the first electric device 50A is charged, the battery 52 of the second electric device 50B in the center is charged, and finally the third electric device on the rightmost side is charged. The 50C battery 52 is charged. However, the position detection controller, as the order of the positions, in order from the electrical equipment on the right side of the power supply area, the electrical equipment on the upper side, or the electrical equipment on the lower side on the paper surface of FIGS. It can also be memorized so as to charge in order from the device.

  In addition, the position detection controllers 14 and 64 are placed on the power supply area 5 in order of charging the batteries 52 of the respective electric devices 50 placed on the power supply area 5 of the top plate 1 so as to face the upper surface plate 21. It can also be stored as an order. The position detection controllers 14 and 64 charge the battery 52 of the electric device 50 in the order in which the position detection controllers 14 and 64 are placed on the power feeding region 5 first.

  As described above, the position detection controllers 14 and 64 that store the order of charging the batteries 52 of the plurality of electric devices 50 are fixed to the inner surface of the upper surface plate 21 and arranged close to the surface of the top plate 1. The position of the power receiving coil 51 is detected from the level of the echo signal induced by the plurality of position detecting coils 30. The position detection controller 14 shown in FIGS. 10, 11, and 16 detects the position of the electric device 50 by the first position detection controller 14 </ b> A that roughly detects the position of the electric device 50. 14 A of 1st position detection controllers detect the position of the electric equipment 50 by the method mentioned above. That is, a pulse signal is output to each position detection coil 30, and an echo signal that is excited by this pulse signal and output from the power reception coil 51 of the electric device 50 to the position detection coil 30 is received by the reception circuit 32. The position of the power receiving coil 51 is determined by the identification circuit 33 from the echo signal received by the circuit 32. The identification circuit 33 detects the position of the power receiving coil 51 from the X-axis detection coil 30A and the Y-axis detection coil 30B from which the strongest echo signal, that is, the echo signal having a high level is detected. Further, as described above, the position detection controller 64 shown in FIG. 14 stores the level of the echo signal induced in each position detection coil 30 with respect to the position of the power receiving coil 51 by the identification circuit 73 in the storage circuit 77. Therefore, the level of the echo signal induced in each position detection coil 30 is compared with the level of the echo signal stored in the storage circuit 77 to detect the position of the power receiving coil 51. The position detection controllers 14 and 64 described above detect the position of each electric device 50 placed on the power feeding region 5 of the top board 1 and specify the order of charging from the detected position.

  When the position detection controllers 14 and 64 detect the position of the electric device 50, the position detection controllers 14 and 64 output a detection signal to the recognition display 40. The recognition indicator 40 recognizes the electric device 50 placed on the power feeding area 5 of the top board 1 with the detection signals input from the position detection controllers 14 and 64. Each time the position detection controllers 14 and 64 detect the electric device 50, the position detection controllers 14 and 64 output detection signals to the recognition display 40, or output the number of recognized electric devices 50 to the recognition display 40 as detection signals. The recognition indicator 40 displays the number of electric devices 50 placed on the power feeding area 5 of the top board 1 on the display unit 41 by detection signals input from the position detection controllers 14 and 64.

  The display unit 41 includes a plurality of pilot lamps 42. The display unit 41 turns on the plurality of pilot lamps 42 and displays the recognition of the plurality of electric devices 50 placed on the power feeding area 5 of the top board 1. For example, as shown in FIG. 5, when three electric devices 50 are placed on the top plate 21, the three pilot lamps 42 are turned on to indicate that the three electric devices 50 have been recognized. The display unit 41 is provided with the number of electric devices 50 mounted on the power feeding area 5 of the top plate 1 and displays the number of electric devices 50 recognized by the number of pilot lamps 42 to be lit. However, the display unit can display the number of electric devices mounted on the power supply area of the top board by the color of the pilot lamp, the number of blinks, or a digital numerical value. For example, a charger that can mount three electrical devices 50 on the power feeding region 5 of the top plate 1 includes first, second, and third pilot lamps 42. The pilot lamps 42 are lit in the order of the electric devices 50 that are recognized and charged.

  Further, the display unit 41 displays the state of charge of the electric device 50 by the emission color of the pilot lamp 42 such as a light emitting diode. The pilot lamp 42 emits light in different colors depending on the emission color for recognizing the electric device 50 and the emission color for displaying the state of charge. For example, the emission color for recognizing the electric device 50 is green, the emission color of the electric device 50 being charged is red, the number of electric devices 50 to be recognized is displayed, and the electric device 50 being charged is specified. be able to. For example, in a state where the three electric devices 50 are mounted and the battery 52 of the first electric device 50A to be charged first is charged, the emission color of the first pilot lamp 42A is red, and the second pilot lamp The emission color of 42B and the third pilot lamp 42C is green. In this state, the user can recognize the state of charging the battery 52 of the first electric device 50A. The pilot lamp 42 can also display a charge state in a lighting state. For example, the display unit 41 can light the pilot lamp 42 continuously in a state where the electric device 50 is recognized, and can blink the pilot lamp 42 in a state where the electric device 50 is being charged. . Furthermore, the display unit 41 that displays the charging state can display the charging state with characters such as “charging the first electric device” regardless of the emission color or lighting state of the pilot lamp 42.

  Furthermore, the display unit 41 can also display that the battery 52 of the specific electric device 50 is fully charged. The display unit 41 can display the emission color of the pilot lamp 42 as an emission color different from the emission color indicating that the pilot lamp 42 is recognized and the emission color indicating that charging is in progress, for example, as a blue emission color. The pilot lamp 42 of the display unit 41 emits green light when the electric device 50 is recognized, red when the electric device 50 is charged, and blue light when the electric device 50 is fully charged. Display full charge. Furthermore, the display part 41 of the pilot lamp 42 can also display full charge in a lighting state. When the battery 52 of the electrical device 50 is fully charged, the display unit 41 can blink and display a long lighting state and a short lighting state. In addition, the display unit can display characters such as “the first electric device is fully charged”.

The non-contact power supply unit 3 described above performs the following operation to charge the batteries 52 of the plurality of electric devices 50 placed on the power feeding region 5 of the top plate 1.
(1) When the electric device 50 is placed on the power feeding region 5 of the top board 1, the first position detection controller 14A of the position detection controller 14 detects the position of the electric device 50 and recognizes the detection signal. Output to 40.
(2) The recognition indicator 40 recognizes the electric device 50 from the detection signal and displays it on the display unit 41. When the three electric devices 50 are placed on the power supply area 5 of the top plate 1, the position detection controller 14 detects the positions of the three electric devices 50 and outputs detection signals to the recognition display 40. Therefore, the recognition indicator 40 recognizes the three electric devices 50 and displays them on the display unit 41. The display unit 41 including the pilot lamps 42 lights up the three pilot lamps 42 and displays that the three electric devices 50 are placed on the power feeding area 5 of the top board 1.
(3) When the position detection controller 14 detects the plurality of electric devices 50, the charging order is specified from the position order or the set order. The contactless power supply unit 3 that charges the electrical devices 50 in the order of positions, for example, charges the electrical devices 50 placed on the power feeding region 5 of the top board 1 in order on the left side. Therefore, the position detection controller 14 controls the moving mechanism 13 to bring the power transmission coil 11 closer to the power receiving coil 51 of the first electric device 50A that is charged first, and the battery 52 of the first electric device 50A. Charge.
(4) When the battery 52 of the first electric device 50 is fully charged, the position detection controller 14 detects full charge by a full charge signal output from the electric device 50. When the full charge is detected, the position detection controller 14 controls the moving mechanism 13 to bring the power transmission coil 11 closer to the power reception coil 51 of the electric device 50 to be charged next. In this state, power is transferred to the battery 52 of the second electric device 50B, and the battery 52 is fully charged.
(5) Furthermore, when the battery 52 of the second electric device 50B is fully charged and the full charge detection circuit 17 receives the full charge signal from the second electric device 50B, the position detection controller 14 further The power transmission coil 11 is brought close to the position of the power receiving coil 51 of the third electrical device 50C, and the battery 52 of the electrical device 50 is fully charged.

  The above non-contact power supply unit 3 starts charging after the three electric devices 50 are placed on the power feeding region 5 of the top plate 1. However, the non-contact power supply unit 3 is in the middle of charging. The device 50 may be placed. The non-contact power supply unit in which the position detection controller 14 charges the battery 52 of the electric device 50 in the set order fully charges the battery 52 of the electric device 50 mounted first, and then the electric device 50 mounted later. The battery 52 is charged.

  The non-contact power supply unit in which the position detection controller 14 charges the electric device 50 in the order of the position is not limited to the battery of the electric device 50 placed first even if another electric device 50 is loaded in the middle of charging. The electric device 50 being charged is preferentially charged without stopping the charging of 52. Thereafter, when the battery 52 of the electric device 50 is fully charged or charged to a predetermined capacity, the left-side electric power supply unit that charges in order of position, for example, the left electric device 50 in turn, The battery 50 of the apparatus 50 is charged in order. However, if the position detection controller is in the middle of charging the battery of a specific electrical device and the electrical device is placed on a position that has priority over this electrical device, for example, the left side, the electrical device to be charged is placed later. It can also be changed to the battery of the left electrical device. That is, the non-contact power supply unit always charges in order from the electric device on the left side.

  Even if the position detection controller 14 is in a state of charging the battery 52 of the electric device 50 in order to detect the electric device 50 placed on the upper surface plate 21, for example, a cycle of several seconds to several tens of seconds. Thus, the electric device 50 is detected.

  Even if the position detection controller 14 is in a state of charging the battery 52 of the electric device 50 in order to detect the electric device 50 placed on the power feeding region 5 of the top board 1, for example, several seconds to several The electric device 50 is detected at a cycle of 10 seconds.

  The non-contact power supply unit 3 described above, after fully charging the battery 52 of the electrical device 50, brings the power transmission coil 11 close to the power receiving coil 51 of the electrical device 50 to be charged next, and the battery 52 of the next electrical device 50. To charge. The non-contact power supply unit 3 of the electric device 50 that uses the built-in battery 52 as a lithium ion battery can also switch to the next charging of the electric device 50 before the battery 52 is fully charged. The non-contact power supply unit 3 includes a remaining capacity detection circuit 18 that detects that the position detection controller 14 has been charged to a preset remaining capacity of the battery 52 of the electric device 50. When the remaining capacity detection circuit 18 detects that the charged battery 52 has been charged to the set remaining capacity, the contactless power supply unit 3 supplies the power receiving coil 51 to the power receiving coil 51 of the electric device 50 that is charged next. Approaching, the battery 52 of this electric device 50 is charged to the set remaining capacity, and the battery 52 of each electric device 50 is charged to the set remaining capacity in order. The set remaining capacity is a remaining capacity at which the voltage of the lithium ion battery rises to a set voltage, for example, 4.1 V / cell to 4.2 V / cell, for example, 80%. The lithium ion battery is quickly charged up to this set capacity by constant current charging. The non-contact power supply unit 3 charges the batteries 52 of all the electric devices 50 to the set capacity, and further brings the power transmission coil 11 closer to the power receiving coil 51 of the electric device 50 according to the order of positions or the set order. Then, the battery 52 of each electric device 50 is fully charged.

  When the batteries 52 of all the electrical devices 50 are fully charged, the contactless power supply unit 3 turns off the AC power supply 12 and stops supplying power to the power transmission coil 11.

  The above non-contact power supply unit causes the power transmission coil 11 to approach the power receiving coil 51 of the electric device 50 placed on the top plate 1 with the control mechanism 10 and conveys power from the power transmitting coil 11 to the power receiving coil 51. The electric device 50 is supplied with electric power. However, the non-contact power supply unit does not have a mechanism for moving the power transmission coil close to the power reception coil. In other words, the power transmission coil is fixed in the case and is transmitted to the power reception coil of the electric device placed on the top plate. Electric power can also be supplied from the coil to the electrical equipment.

  The contactless power supply unit 203 shown in FIGS. 20 and 21 fixes the power transmission coil 11 along the lower surface of the upper surface plate 21 that is the upper surface of the case 20. The contactless power supply unit 203 displays the position of the power transmission coil 11 built in the case 20, in other words, the position where the electric device 50 is placed on the upper surface of the upper surface plate 21. This is because the electric device placed on the power feeding region 5 is accurately set at the position of the power transmission coil 11, and the power is efficiently transferred from the power transmission coil 11 to the power reception coil 51 by magnetic induction. The non-contact power supply unit 203 in the figure displays a set position 209 indicating a position on which the electric device 50 is placed as a graphic 219 so that the electric device 50 can be arranged at a normal set position 209. Since the power transmission coil 11 is arranged at the center of the lower surface of the upper surface plate 21 in the case 20 in the figure, the set position 209 is set so that the center of the power receiving coil 51 of the electric device 50 can be disposed at the center of the upper surface of the upper surface plate 21. Is displayed as a graphic 219. The non-contact power supply unit 203 in the figure displays, as a figure 219 representing the set position 209, a central axis 219 </ b> A that intersects vertically and horizontally at the center of the power transmission coil 11, and a plurality of quadrangles 219 </ b> B along the outer periphery of the top plate 21. . The plurality of quadrangles 219B are squares of different sizes with the center of the power transmission coil 11 as the intersection of diagonal lines, and these are displayed at equal intervals. The figure 219 clearly displays the center position of the power transmission coil 11 with a central axis 219A intersecting vertically and horizontally and a plurality of quadrangles 219B having different sizes. However, the graphic indicating the set position may be a graphic indicating the outer shape of the electrical device.

  Further, the non-contact power supply unit 203 in FIGS. 20 and 21 has a size of the top plate 21 of the case 20 to which the power transmission coil 11 is fixed so that one electric device 50 can be arranged at the center. The power feeding area 5 of the plate 1 is sized so that one electric device 50 can be arranged, and the power transmission coil 11 is sized to carry power to the power receiving coil 51 of one electric device 50 set in the power feeding area 5. In this solar cell table, one electric device 50 is set in the power feeding region 5 of the top plate 1, and the electric power is transferred from the power transmission coil 11 to the power receiving coil 51 of the electric device 50 to supply electric power.

  Furthermore, the non-contact power supply unit 303 shown in FIGS. 22 and 23 has a size of the upper surface plate 21 of the case 20 to which the power transmission coil 11 is fixed, that is, a size capable of arranging a plurality of electric devices 50, that is, a ceiling. The power feeding area 5 of the plate 1 is set to a size that allows a plurality of electric devices 50 to be placed thereon, and the power transmission coil 11 is set to a size that allows power to be transferred simultaneously to the power receiving coils 51 of the plurality of electric devices 50 placed on the power feeding region 5. Yes. In the state where a plurality of electric devices 50 are set in the power feeding region 5 of the top plate 1, this solar cell table simultaneously supplies power from the power transmission coil 11 to the power receiving coils 51 of these electric devices 50 to supply power.

  The non-contact power supply unit 303 in the figure displays the position of the center of the power transmission coil 11 as a graphic 319 on the upper surface of the upper surface plate 21. The non-contact power supply unit 303 in the figure includes a central axis 319A that intersects vertically and laterally at the center of the power transmission coil 11 as a graphic 319 representing the set position 309 of the electric device 50, and a plurality of points centered on the intersection of the central axis 319A. A concentric circle 319B is displayed. The figure shown in the figure displays three concentric circles 319B at equal intervals. The figure 319 clearly displays the center position of the power transmission coil 11 by a central axis 319A intersecting vertically and horizontally and a plurality of concentric circles 319B having different sizes. The non-contact power supply unit 303 places the electric device 50 on the power supply region 5 that is a portion facing the power transmission coil 11 indicated by a graphic 319, and conveys power from the power transmission coil 11 to the power receiving coil 51 of the electric device 50. The contactless power supply unit 303 can carry power simultaneously from the power transmission coil 11 to the power receiving coils 51 of the electric devices 50 in a state where the plurality of electric devices 50 are placed on the power supply region 5. As described above, the solar cell table capable of simultaneously transferring power to the power receiving coils 51 of the plurality of electric devices 50 placed on the power feeding area 5 has, for example, a lighting device such as a lantern or an electric equipment such as a radio mounted on the center of the power feeding area. In such a state that power is supplied to these electric devices and used, an electric device such as a mobile phone can be mounted on a power feeding area around the electric device, and a battery built in these electric devices can be charged.

  Furthermore, the non-contact power supply unit can incorporate a plurality of power transmission coils in the case and carry power to the power reception coils of a plurality of electric devices arranged in the power feeding region. The contactless power supply unit 403 shown in FIGS. 24 and 25 has a size of the upper surface plate 21 of the case 20 to which the power transmission coil 11 is fixed so that a plurality of electric devices 50 can be arranged, that is, the top plate 1. The power feeding region 5 is sized so that a plurality of electric devices 50 can be disposed, and the plurality of power transmission coils 11 are fixed along the lower surface of the upper surface plate 21. The non-contact power supply unit 403 in the figure has three power transmission coils 11 built in and fixed to the case 20.

  The non-contact power supply unit 403 in the figure displays a plurality of set positions 409 as a graphic 419 so that the plurality of electrical devices 50 can be arranged at the correct positions on the upper surface of the top plate 21. Each figure 419 displaying a plurality of set positions 409 is displayed to face each power transmission coil 11 built in the case 20. The non-contact power supply unit 403 in the figure displays a figure 419 having a shape that follows the outer shape of the electric device 50. The non-contact power supply unit 403 can easily place the electric device 50 at a normal set position by setting the electric device 50 according to the outer shape of the figure 419.

  As described above, the non-contact power supply unit 403 including the plurality of power transmission coils 11 supplies AC power to the power transmission coils 11 at the same time, and simultaneously supplies power to the plurality of electric devices 50 arranged in the power feeding region 5. It is also possible to supply power to the plurality of electric devices 50 arranged in the power feeding region 5 in order by switching the power transmission coils 11 that supply AC power in order. Although not shown, the non-contact power supply unit 403 can supply AC power from a single AC power source to a plurality of power transmission coils. Alternatively, the non-contact power supply unit 403 includes a plurality of AC power sources. AC power can also be supplied.

  As described above, the contactless power supply units 203, 303, and 403 that fix the power transmission coil 11 to the case 20 have the set positions 209, 309, and 409 of the electric device 50 on the top surface of the top plate 21, and the shapes 219, 319, Displayed at 419, the electric device 50 can be easily arranged at the normal set positions 209, 309, and 409. However, the graphic displayed on the top plate is not specified as the above shape, and can be various patterns, shapes, and color schemes that can arrange the electric device at an accurate set position.

  Furthermore, although the above non-contact power supply unit is not shown, the battery of the electric device is fully charged in the state of charging the battery that is built in the electric device that is set in the power supply area of the top plate, Alternatively, when a predetermined capacity is charged, a charge stop signal output from the electric device can be received to stop the power transfer from the power transmission coil. The contactless power supply unit includes a circuit that receives a charge stop signal output from the charging circuit of the electrical device, and turns off the AC power when detecting that the battery of the electrical device has been charged to a predetermined capacity. The power supply to the power transmission coil is stopped. Thereby, wasteful power consumption can be effectively prevented.

DESCRIPTION OF SYMBOLS 1 ... Top plate 2 ... Solar cell panel 3 ... Non-contact electric power supply part 4 ... Electric power generation area 5 ... Power feeding area 6 ... Magneto-optically transmissive panel 6A ... Reinforced plastic panel 7 ... Battery 8 ... Emergency portable power supply 10 ... Control mechanism 11 ... Power transmission coil 12 ... AC power supply 13 ... Movement mechanism 14 ... Position detection controller 14A ... First position detection controller
14B ... Second position detection controller
14C ... 2nd position detection controller 15 ... Core 15A ... Cylindrical part
15B ... Cylindrical part 16 ... Lead wire 17 ... Full charge detection circuit 18 ... Remaining capacity detection circuit 20 ... Case 21 ... Top plate 22 ... Servo motor 22A ... X-axis servo motor
22B ... Y-axis servo motor 23 ... Screw rod 23A ... X-axis screw rod
23B ... Y-axis screw rod 24 ... Nut material 24A ... X-axis nut material
24B ... Y-axis nut material 25 ... Belt 26 ... Guide rod 27 ... Guide part 30 ... Position detection coil 30A ... X-axis detection coil
30B ... Y-axis detection coil 31 ... Pulse power supply 32 ... Reception circuit 33 ... Identification circuit 34 ... Switching circuit 35 ... Limiter circuit 36 ... A / D converter 37 ... Memory circuit 38 ... Memory 40 ... Recognition indicator 41 ... Display unit 42 ... Pilot lamp 42A ... 1st pilot lamp
42B ... Second pilot lamp
42C ... third pilot lamp 50 ... electric device 50A ... first electric device
50B ... Second electrical device
50C ... Third electric device 51 ... Receiving coil 52 ... Battery 53 ... Condenser 54 ... Resonant circuit 55 ... Diode 56 ... Smoothing capacitor 57 ... Rectifier circuit 58 ... Charge control circuit 64 ... Position detection controller 73 ... Identification circuit 77 ... Memory Circuit 82 ... AC power supply 83 ... Voltage detection circuit 84 ... Power consumption detection circuit 85 ... Reception circuit 90 ... Electrical equipment 95 ... Transmission circuit 103 ... Contactless power supply unit 110 ... Top plate main body 111 ... Surrounding wall 112 ... Recess 113 ... Recess 114 ... through-hole 115 ... container 116 ... housing portion 117 ... groove panel 117A ... side wall 120 ... charge circuit 121 ... DC / AC inverter 122 ... connector 123 ... connector 124 ... outlet 125 ... power switch 126 ... diode 203 ... contactless power supply Part 209 ... Set position 219 ... Figure 219A ... Center axis
219B ... Rectangle 303 ... Contactless power supply unit 309 ... Set position 319 ... Figure 319A ... Center axis
319B ... Concentric circle 403 ... Non-contact power supply unit 409 ... Set position 419 ... Graphic

Claims (18)

A top panel (1), a solar cell panel (2) provided on the top panel (1), and a receiving coil (51) provided on the top panel (1) and mounted on the top surface of the top panel (1) Non-contact power supply unit (3), (103), (203), (303), (403) for supplying power to the electric device (50), (90),
The contactless power supply unit (3), (103), (203), (303), (403) is a power transmission coil (11) that is electromagnetically coupled to the power receiving coil (51) and transmits power by magnetic induction action And AC power supplies (12) and (82) for supplying AC power to the power transmission coil (11),
The top plate (1) is provided with a power generation region (4) provided with a solar panel (2) and a non-contact power supply unit (3), (103), (203), (303), (403) The solar cell table in which the upper surface of the feeding area (5) to be applied is the same plane and the upper surface of the top plate (1) is planar.   The non-contact power supply unit (3), (103), the power transmission coil (11), the electric device (50) mounted on the power generation region (5) of the top plate (1), receiving coil of (90) ( 51) is provided with a control mechanism (10), and the control mechanism (10) moves the power transmission coil (11) along the top plate (1) to be placed on the power feeding region (5). Claims (50), (90) are brought close to the power receiving coil (51), and power is transferred from the power transmitting coil (11) to the power receiving coil (51) to supply power to the electric devices (50), (90). 1 is a solar cell table.   The control mechanism (10) is controlled by the position detection controllers (14) and (64) that detect the positions of the electric devices (50) and (90), and the position detection controllers (14) and (64). The solar cell table according to claim 2, further comprising a moving mechanism (13) for moving the power transmission coil (11).   4. The solar cell table according to claim 3, wherein the position detection controllers (14) and (64) detect a position of a power receiving coil (51) built in the electric devices (50) and (90).   The position detection controllers (14) and (64) are provided with a plurality of position detection coils (30) arranged close to the surface of the top plate (1), and pulse signals are sent to the position detection coils (30). The pulse power supply (31) to be supplied and the echo signal that is excited by the pulse signal supplied from the pulse power supply (31) to the position detection coil (30) and output from the power reception coil (51) to the position detection coil (30) A receiving circuit (32) for receiving the signal and an identification circuit (33), (73) for determining the position of the power receiving coil (51) from an echo signal received by the receiving circuit (32). Solar cell table.   The position detection controller (14) includes a first position detection controller (14A) for roughly detecting the position of the power receiving coil (51) of the electric devices (50) and (90), and the power receiving coil (51). A power transmission coil (11) provided with a second position detection controller (14B) and (14C) for precisely detecting the position, and being brought close to the power receiving coil (51) by the first position detection controller (14A), The solar cell table according to claim 3, wherein the second position detection controllers (14B) and (14C) are made to approach the power receiving coil (51).   The first position detection controller (14A) supplies a plurality of position detection coils (30) arranged close to the surface of the top plate (1) and pulse signals to the position detection coils (30). And an echo signal that is excited by a pulse signal supplied from the pulse power supply (31) to the position detection coil (30) and output from the power reception coil (51) to the position detection coil (30). The solar cell table according to claim 6, comprising a receiving circuit (32) for receiving, and an identification circuit (33) for determining a position of the power receiving coil (51) from an echo signal received by the receiving circuit (32).   The solar cell table according to claim 6, wherein the second position detection controller (14C) moves the power transmission coil (11) and stops at a position where the voltage of the power transmission coil (11) is lowest.   The solar cell table according to claim 6, wherein the second position detection controller (14C) moves the power transmission coil (11) and stops at a position where the power consumption of the AC power supply (82) is minimized.   The solar cell table according to claim 6, wherein the second position detection controller (14C) moves the power transmission coil (11) and stops at a position where the current of the power reception coil (51) becomes the largest.   The upper surface of the power generation area (4) and the power feeding area (5) is provided with a magneto-optical transmission panel (6) that is translucent and waterproof and has a non-magnetic shielding property. Solar cell table.   The solar cell table according to claim 11, wherein the magneto-optical transmission panel (6) is one of a transparent reinforced plastic panel (6A) and glass.   A battery (7) charged with power generated by the solar battery panel (2) is built under the top plate (1), and this battery (7) is connected to the AC power source (12), (82). The solar cell table according to claim 1, wherein power is supplied.   The solar cell table according to claim 1, wherein a power feeding region (5) is provided at a central portion of the top plate (1).   2. The sun according to claim 1, wherein an emergency portable power source (8) containing a battery (7) charged by the solar cell panel (2) is detachably provided below the top plate (1). Battery table.   The power supply region (5) of the top plate (1) is large enough to mount a plurality of electric devices (50), and the contactless power supply units (3), (103), (303), (403 The solar cell table according to claim 1, wherein the electric power is supplied to the plurality of electric devices (50), (90) mounted on the power supply region (5).   The non-contact power supply unit (303) includes a power transmission coil (11) having a size capable of supplying power to the plurality of electric devices (50) mounted on the power supply region (5), and is mounted on the power supply region (5). The solar cell table according to claim 16, wherein electric power is conveyed from the power transmission coil (11) to the power receiving coils (51) of the plurality of electric devices (50) to supply electric power to the plurality of electric devices (50) simultaneously.   The non-contact power supply unit (403) includes a plurality of power transmission coils (11) for supplying power to a plurality of electric devices (50) mounted on the power supply region (5), and a plurality of power supply coils (11) mounted on the power supply region (5) The solar cell according to claim 16, wherein power is transferred from each of the power transmission coils (11) to the power receiving coil (51) of the electric device (50) to supply power to the plurality of electric devices (50) simultaneously or sequentially. table.

Images