JP2009159677A - Noncontact power feeding adaptor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a noncontact power feeding adaptor capable of easily executing noncontact power feeding at a low cost by using an outlet arranged, in advance. <P>SOLUTION: The noncontact power feeding adaptor 1 is provided with: a housing 10 forming an exterior; a pair of blades 11, 11 protruding from the housing 10 and inserted/withdrawn into/from a pair of blade insertion ports 151a, 151a provided an AC outlet 151; a high-frequency power generating circuit 12, housed in the housing 10 and converting power supplied from the outlet 151 via the blades 11 into high-frequency current; a primary coil L1, housed in the housing 10 and supplied with a high-frequency current from the high-frequency power generating circuit 12 to generate a high-frequency magnetic field; and magnets M1a, M1a as attaching means for attaching a noncontact power receiving section 20 for supplying power received in a noncontact manner from the primary coil L1 to the DC apparatus U, to the housing 10, by utilizing electromagnetic induction on the high-frequency magnetic field generated by the primary coil L1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a non-contact power supply adapter.

  2. Description of the Related Art Conventionally, power distribution systems disposed in buildings such as houses and offices include an AC power distribution system that supplies commercial power and a DC power distribution system that supplies DC power obtained by converting commercial power into DC voltage.

The power distribution system installed in these buildings has openings in the building materials that make up the wall, ceiling, and floor of the building, and electrical equipment is installed in contact outlets such as outlets and hook ceilings installed in these openings. A power supply is supplied to each electric device by a direct contact between a contact (conductor) provided directly on the contact or a contact provided via a connection line (see, for example, Patent Documents 1 and 2).
Japanese Patent Laid-Open No. 2-276212 Japanese Patent Laid-Open No. 7-15835

  In the above conventional technique, the user needs to connect the contact of the electric device to the contact outlet (particularly, the outlet), and further, there is a risk of electric shock because the conductor for power feeding is exposed. Therefore, instead of the outlet, a non-contact power supply unit that generates a high-frequency magnetic field is installed as a non-contact outlet, and the non-contact power supply unit uses a non-contact power supply unit for electromagnetic contact by the high-frequency magnetic field generated by the non-contact power supply unit. It is conceivable to use a non-contact power feeding system in which a non-contact power receiving unit that supplies the power received in step 1 to a load is disposed opposite to the non-contact power feeding unit.

  However, when a new contactless power supply system was to be installed, it was necessary to remove the outlets that had been placed in advance, which required labor and cost.

  This invention is made | formed in view of the said reason, The objective is to provide the non-contact electric power feeding adapter which can perform non-contact electric power feeding easily at low cost using the outlet socket arrange | positioned ahead. is there.

  According to the first aspect of the present invention, there is provided a housing constituting the outer shell, a plug blade that protrudes from the housing and is inserted into and removed from a plug blade insertion port, and is supplied from the outlet through the plug blade. High-frequency power generation circuit that converts the generated power into a high-frequency current, a coil that is housed in the housing and is supplied with a high-frequency current from the high-frequency power generation circuit, and a high-frequency magnetic field generated by the coil And a mounting means for attaching to the housing a non-contact power receiving section that supplies power received by the coil in a non-contact manner to the load.

  According to the present invention, the non-contact power supply adapter can constitute a non-contact power supply means for generating a high-frequency magnetic field by inserting the plug blade into the plug blade insertion port of the outlet, and the DC device provided with the non-contact power receiving unit If the non-contact power receiving unit alone is attached to the housing, power can be supplied to the load in a non-contact manner, so that non-contact power feeding can be easily performed at low cost using a previously placed outlet.

  According to a second aspect of the present invention, in the first aspect, the attachment means is a magnet that generates an attractive force with a magnet provided in the non-contact power receiving unit, and faces the coil on one surface of the housing. A non-contact power receiving unit is detachably attached to the position where the power is received.

  According to the present invention, it is not necessary to separately provide attachment means such as screws and locking means, and the configuration can be simplified and the attachment work can be simplified.

  According to a third aspect of the present invention, in the second aspect, the polarities of the magnets respectively provided in the housing and the non-contact power receiving unit are set so that the non-contact power receiving unit is attached to the housing in a predetermined direction. It is characterized by that.

  According to the present invention, the non-contact power receiving unit can be mounted in the mounting direction in which electromagnetic coupling with the primary coil is maximized.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the high-frequency power generation circuit includes an operation unit that varies a high-frequency current supplied to the coil, and the coil is provided in response to an operation of the operation unit. The high-frequency current to be supplied is adjusted.

  According to the present invention, since the output voltage on the non-contact power receiving unit side can be made variable, an appropriate voltage can be selected by the operating means even for loads with different rated voltages, and versatility is improved.

  As described above, according to the present invention, there is an effect that non-contact power feeding can be easily performed at a low cost by using a previously arranged outlet.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
The non-contact power supply adapter 1 of this embodiment constitutes a non-contact power supply system by being mounted on a conventional contact type outlet installed on a wall or the like in a building H such as a house.

  In the present embodiment, the power distribution system in the building H is composed of a DC power distribution system and an AC power distribution system. First, an outline of this power distribution system will be described with reference to FIG.

  The embodiments described below are described assuming a detached house as a building to which the present invention is applied, but this does not preclude the application of the technical idea of the present invention to an apartment house. As shown in FIG. 5, the building H is provided with a DC power supply unit 101 that outputs DC power and a DC device U ′ that is an electric device driven by the DC power, and the output of the DC power supply unit 101 DC power is supplied to the DC device U ′ through the DC supply line Wdc connected to the end. A current flowing through the DC supply line Wdc is monitored between the DC power supply unit 101 and the DC device U ′, and when an abnormality is detected, the DC power supply unit 101 to the DC device U ′ is detected on the DC power supply line Wdc. A DC breaker 114 is provided to limit or cut off the power supply.

  The DC supply line Wdc is used as both a DC power supply path and a communication path, and is connected to the DC supply line Wdc by superimposing a communication signal for transmitting data on a DC voltage using a high-frequency carrier wave. Enables communication between devices. This technique is similar to a power line carrier technique in which a communication signal is superimposed on an AC voltage in a power line that supplies AC power.

  The DC supply line Wdc is connected to the home server 116 via the DC power supply unit 101. The home server 116 is a main device that constructs a home communication network (hereinafter referred to as “home network”), and communicates with a subsystem or the like constructed by the DC device U ′ in the home network.

  In the illustrated example, the subsystem includes an information equipment system K101 including an information system DC equipment U ′ such as a personal computer, a wireless access point, a router, and an IP telephone, and an illumination system DC equipment U ′ such as a lighting fixture. There are lighting systems K102 and K105, an intercom system K103 composed of a DC device U ′ for dealing with visitors and monitoring intruders, and a residential alarm system K104 composed of an alarm DC device U ′ such as a fire detector. Each subsystem constitutes a self-supporting distributed system, and can operate even with the subsystem alone.

  The above-described DC breaker 114 is provided in association with a subsystem. In the illustrated example, four DCs are associated with the information equipment system K101, the lighting system K102 and the intercom system K103, the house alarm system K104, and the lighting system K105. A breaker 114 is provided. When a plurality of subsystems are associated with one DC breaker 114, a connection box 121 for dividing the system of the DC supply line Wdc is provided for each subsystem. In the illustrated example, a connection box 121 is provided between the illumination system K102 and the intercom system K103.

  As the information equipment system K101, there is provided an information equipment system K101 comprising a direct current equipment U ′ connected to a direct current outlet 131 arranged in advance in the building H in the form of a wall outlet or a floor outlet (constructed during construction of the building H). .

  As the lighting systems K102 and K105, the lighting system K102 including a lighting fixture (DC device U ′) arranged in advance in the building H and the lighting fixture (DC device U ′) connected to the hook ceiling 132 arranged in advance on the ceiling. And an illumination system K105. At the time of interior construction of the building H, the contractor attaches the lighting fixture to the hook ceiling 132, or the resident himself attaches the lighting fixture.

  In addition to using an infrared remote control device, a control instruction for the lighting apparatus that is the DC device U ′ constituting the lighting system K102 can be given using a communication signal from the switch 141 connected to the DC supply line Wdc. That is, the switch 141 has a communication function together with the DC device U ′. In addition, a control instruction may be given by a communication signal from another DC device U 'in the home network or the home server 116 regardless of the operation of the switch 141. The instructions to the lighting fixture include lighting, extinguishing, dimming, and blinking lighting.

  Arbitrary DC equipment U ′ can be connected to the DC outlet 131 and the hooking ceiling 132 described above, and since DC power is output to the connected DC equipment U ′, the DC outlet 131 and the hooking ceiling 132 will be described below. When it is not necessary to distinguish, it is called a “DC outlet”.

  These DC outlets have a contact (such as a plug blade or conductor piece of a plug (not shown)) directly provided on the DC device U ′ or a plug-in connection port into which a contact provided via a connection line is inserted. The contact holder that directly contacts the contact inserted into the connection port is held by the container, and power is supplied in a contact manner. When the DC device U 'connected to the DC outlet has a communication function, a communication signal can be transmitted through the DC supply line Wdc. A communication function is provided not only in the DC device U 'but also in the DC outlet.

  The home server 116 not only is connected to the home network, but also has a connection port connected to the wide area network NT that constructs the Internet. When the in-home server 116 is connected to the wide area network NT, it is possible to receive services from the center server 200 that is a computer server connected to the wide area network NT.

  The service provided by the center server 200 is a service that enables monitoring and control of equipment (mainly DC equipment U ′ including other equipment having a communication function) connected to the home network through the wide area network NT. There is. This service makes it possible to monitor and control devices connected to the home network using a communication terminal (not shown) having a browser function such as a personal computer, Internet TV, or mobile phone.

  The in-home server 116 has both functions of communication with the center server 200 connected to the wide area network NT and communication with equipment connected to the home network, and identification information on equipment in the home network ( Here, it is assumed that an IP address is used).

  The home server 116 enables monitoring and control of home devices through the center server 200 from a communication terminal connected to the wide area network NT by using a communication function with the center server 200. The center server 200 mediates between home devices and communication terminals on the wide area network NT.

  When monitoring and controlling home devices from a communication terminal, monitoring and control requests are stored in the center server 200, and the home device periodically performs one-way polling communication to monitor from the communication terminal. And receive control requests. With this operation, it is possible to monitor and control devices in the house from the communication terminal.

  Further, when an event that should be notified to the communication terminal, such as a fire detection, occurs in the home device, the home device notifies the center server 200, and the center server 200 notifies the communication terminal by e-mail.

  An important function among the communication functions with the home network in the home server 116 is the detection and management of devices constituting the home network. The home server 116 automatically detects devices connected to the home network by applying UPnP (Universal Plug and Play). The home server 116 includes a display device 117 having a browser function, and displays a list of detected devices on the display device 117. The display device 117 has a configuration with a touch panel type or an operation unit, and can perform an operation of selecting desired contents from options displayed on the screen of the display device 117. Therefore, the user (contractor or householder) of the home server 116 can monitor or control the device on the screen of the display device 117. The display device 117 may be provided separately from the home server 116.

  The in-home server 116 manages information related to device connection, and grasps the type, function, and address of the device connected to the home network. Accordingly, the devices in the home network can be operated in conjunction with each other. Information on the connection of the device is automatically detected as described above. In order to operate the device in an interlocking manner, the device itself is automatically associated with the attribute held by the device itself, and the home server 116 is configured as a personal computer. It is also possible to connect various information terminals and use the browser function of the information terminals to associate devices.

  Each device holds the relationship of the interlocking operation of the devices. Therefore, the device can operate in an interlocked manner without passing through the home server 116. By associating the linked operations for each device, for example, by operating a switch that is a device, it is possible to turn on or off the lighting fixture that is the device. In many cases, the association of the interlocking operations is performed within the subsystem, but the association beyond the subsystem is also possible.

  By the way, the DC power supply unit 101 basically generates DC power by power conversion of an AC power supply AC supplied from outside the house like a commercial power supply. In the configuration shown in the figure, the AC power source AC is input to an AC / DC converter 112 including a switching power source through a main circuit breaker 111 attached to the distribution board 110 as an internal unit. The DC power output from the AC / DC converter 112 is connected to each DC breaker 114 through the cooperative control unit 113.

  The DC power supply unit 101 is provided with a secondary battery 162 in preparation for a period in which power is not supplied from the AC power supply AC (for example, a power failure period of the commercial power supply AC). It is also possible to use a solar cell 161 or a fuel cell 163 that generates DC power. The solar battery 161, the secondary battery 162, and the fuel battery 163 are distributed power supplies with respect to the main power supply including the AC / DC converter 112 that generates DC power from the AC power supply AC. In the illustrated example, the solar cell 161, the secondary battery 162, and the fuel cell 163 include a circuit unit that controls the output voltage, and the secondary battery 162 includes a circuit unit that controls charging as well as discharging.

  Of the distributed power sources, the solar cell 161 and the fuel cell 163 are not necessarily provided, but the secondary battery 162 is preferably provided. The secondary battery 162 is charged in a timely manner by a main power source or other distributed power source, and the secondary battery 162 is discharged not only in a period in which power is not supplied from the AC power source AC but also in a timely manner as necessary. The cooperation control unit 113 performs charge / discharge of the secondary battery 162 and cooperation between the main power source and the distributed power source. That is, the cooperative control unit 113 functions as a DC power control unit that controls the distribution of power from the main power supply and the distributed power supply configuring the DC power supply unit 101 to the DC equipment U ′. Note that a configuration may be adopted in which the outputs of the solar cell 161, the secondary battery 162, and the fuel cell 163 are converted into AC power and used as input power of the AC / DC converter 112.

  Since the driving voltage of the DC device U ′ is selected from a plurality of types of voltages depending on the device, a DC / DC converter is provided in the cooperative control unit 113 to convert the DC voltage obtained from the main power source and the distributed power source into the necessary voltage. It is desirable to do. Normally, one type of voltage is supplied to one subsystem (or DC equipment U ′ connected to one DC breaker 114), but three or more wires are supplied to one subsystem. A plurality of types of voltages may be used. Alternatively, it is possible to adopt a configuration in which the DC supply line Wdc is of a two-wire type and the voltage applied between the lines is changed with time. The DC / DC converter may be provided in a plurality of dispersed manners like the DC breaker.

  Furthermore, AC power is supplied to AC device system K110 through AC supply line Wac connected to branch breaker 115 provided in distribution board 110 together with main breaker 111. The AC supply line Wac is connected to the AC outlet 151 arranged in advance in the form of a wall outlet or floor outlet, etc., which is arranged in advance in the building H (constructed when the building H is constructed), and a hook ceiling (not shown). The

  The AC device U ″ of the AC device system K110 is supplied with AC power by inserting a power plug (not shown) provided at one end of a power cord connected to the AC device U ″ into the AC outlet 151. . Note that a function that enables communication between the information breaker 114 and the electrical device K101 or the AC outlet 151 may be provided through the AC supply line Wac. When this function is provided, the AC circuit U can be driven by an AC power source. The home network can be expanded.

  In the above configuration example, only one AC / DC converter 112 is illustrated, but a plurality of AC / DC converters 112 can be arranged in parallel, and when a plurality of AC / DC converters 112 are provided. It is desirable to increase or decrease the number of AC / DC converters 112 that are operated according to the magnitude of the load.

  The AC / DC converter 112, the cooperative control unit 113, the DC breaker 114, the solar cell 161, the secondary battery 162, and the fuel cell 163 described above are provided with a communication function, and the main power source, the distributed power source, and the DC device U ′ are connected. It is possible to perform a cooperative operation to deal with the load status including it. The communication signal used for this communication is transmitted in the form of being superimposed on the DC voltage in the same manner as the communication signal used for the DC device U '.

  In the above example, the AC / DC converter 112 is arranged in the distribution board 110 in order to convert the AC power output from the main breaker 111 into DC power by the AC / DC converter 112. On the output side, a branch breaker (not shown) provided in the distribution board 110 branches the AC supply line into a plurality of systems, and an AC / DC converter is provided on the AC supply line of each system to convert it into DC power for each system. You may employ | adopt the structure to do.

  In this case, since the AC / DC converter can be provided for each floor or room of the building H, the AC / DC converter can be managed for each system, and the DC device U ′ using DC power can be managed. Since the distance of the direct current supply line Wdc is reduced, the power loss due to the voltage drop in the direct current supply line Wdc can be reduced. Also, the main breaker 111 and the branch breaker are housed in the distribution board 110, and the AC / DC converter 112, the cooperative control unit 113, the DC breaker 114, and the home server 116 are housed in a separate board from the distribution board 110. Also good.

  And the non-contact electric power feeding adapter 1 of this embodiment attaches to the alternating current outlet 151 in the said power distribution system, and non-contact electric power feeding is carried out to the DC apparatus U, FIGS. 1-3 is a structure of the non-contact electric power feeding adapter 1. FIG. Indicates.

  The non-contact power supply adapter 1 protrudes from a rear surface of a rectangular box-shaped housing 10 with a pair of flat-shaped plug blades 11, 11. The plug blades 11, 11 are a pair of AC outlets 151 arranged in advance on a wall or the like. The plug blade insertion ports 151a and 151a can be freely inserted and removed, and the AC blade 151 is inserted into the plug blade insertion port 151a, whereby AC power is supplied from the AC outlet 151. A high frequency power generation circuit 12 and a primary coil L1 are housed inside the housing 10.

  The high frequency power generation circuit 12 rectifies and smoothes the AC power supplied through the blades 11 and 11 and converts it into a DC voltage, and then switches a switching element (not shown) provided therein at a high frequency. The DC voltage is converted into a high frequency voltage, and the high frequency voltage is applied to both ends of the primary coil L1 to supply a high frequency current to the primary coil L1. The primary coil L1 is disposed on the front surface of the housing 1 and generates a high frequency magnetic field in front of the housing 1 by a high frequency current. That is, a non-contact power feeding means for generating a high-frequency magnetic field is configured simply by inserting the plug blades 11, 11 of the non-contact power feeding adapter 1 into the plug blade insertion port 151 a of the AC outlet 151. Note that a circuit configuration for converting a DC voltage into a high-frequency voltage using a switching element is well known, and a description thereof will be omitted.

  The high-frequency power generation circuit 12 includes an output changeover switch 12a composed of a three-position slide switch, and the magnitude of the high-frequency current supplied to the primary coil L1 by the output changeover switch 12a is large, medium, and small. There are 3 steps.

  Then, on the front surface of the housing 10 of the non-contact power supply adapter 1, non-contact power receiving means for supplying electric power received in a non-contact manner from the primary coil L1 to the load using electromagnetic induction by a high frequency magnetic field generated by the primary coil L1. Direct current equipment U (lighting equipment, air conditioning equipment, sensor equipment, communication equipment, speaker equipment, LAN hub equipment, heating equipment, etc.) is attached.

  As shown in FIG. 3, each DC device U includes a non-contact power receiving unit 20 used in the non-contact power feeding system and a functional unit 21 of each DC device (for example, an illumination function, an air conditioning function, a sensor function, a communication function, Speaker function, LAN hub function, heating function, etc.). Note that the DC device U has a configuration in which the non-contact power receiving unit 20 is formed as a single unit and operating power is supplied to the device body including the functional unit 21 via the power cord CD, or the non-contact power receiving unit 20 and the functional unit 21. Any of the configurations in which is integrally incorporated (see FIG. 1). When the non-contact power receiving unit 20 is formed as a single unit, the device main body can be arbitrarily arranged regardless of the position of the non-contact power feeding adapter 1.

  The non-contact power receiving unit 20 is disposed at a position facing the primary coil L1 on the front surface of the non-contact power supply adapter 1. This non-contact power receiving unit 20 is electromagnetically coupled to the primary coil L1 of the non-contact power supply adapter 1, and when the high frequency magnetic field generated by the primary coil L1 is linked, a secondary coil L2 is induced by electromagnetic induction. A rectifier DB for full-wave rectification of the secondary voltage generated at both ends of the secondary coil L2, an inductor La connected in series with the rectified output on the positive side of the rectifier DB, and a rectified voltage via the inductor La The smoothing capacitor Ca is smoothed, and the voltage across the smoothing capacitor Ca is supplied to the function unit 21 to be an operating power source for the function unit 21.

  And the voltage supplied to the function part 21 becomes variable by switching the output changeover switch 12a of the non-contact power supply adapter 1. For example, the magnitude of the high-frequency current that the high-frequency power generation circuit 12 supplies to the primary coil L1 is switched between large, medium, and small according to the slide position of the output switch 12a that is a three-position slide switch. The voltages supplied from the non-contact power reception unit 20 to the function unit 21 are switched to 24V, 12V, and 5V, respectively. Therefore, even if it is the direct current | flow apparatus U from which a rated voltage differs, an appropriate voltage can be selected with the output switch 12a, and the versatility of the non-contact electric power supply adapter 1 improves.

  If the output changeover switch 12a is configured as a volume, the magnitude of the high-frequency current supplied from the high-frequency power generation circuit 12 to the primary coil L1 continuously changes and is supplied from the non-contact power reception unit 20 to the function unit 21. The voltage also changes continuously.

  Further, a constant voltage function may be added by providing a series regulator or chopper circuit at the output of the smoothing capacitor Ca. Furthermore, as indicated by a broken line in FIG. 3, a resonance capacitor C2 may be connected in parallel to the secondary coil L2 to improve the power receiving capability from the primary coil L1.

  And in this embodiment, the attachment means which attaches | detaches the direct-current apparatus U which comprised the non-contact power receiving part 20 and the non-contact power receiving part 20 in the front surface of the housing 10 of the non-contact electric power feeding adapter 1 is provided.

  As shown in FIGS. 4A and 4B, the attachment means includes magnets M1a and M1b provided in the housing 10 and magnets M2a and M2b provided in the non-contact power receiving unit 20. The magnets M1a and M1b provided in the housing 10 are each formed in a substantially L shape, one side is magnetized to the S pole, and the other side is magnetized to the N pole. The high frequency power generation circuit 12 and the primary coil L1 are arranged inside a rectangular frame formed to face each other. The magnets M2a and M2b provided in the non-contact power receiving unit 20 are each formed in a substantially L shape, and one side is magnetized to an S pole and the other side is an N pole. The non-contact power receiving unit 20 is attached to the inside of a rectangular frame formed by facing the end faces.

  Therefore, when the primary coil L1 and the non-contact power receiving unit 20 face each other through the front surface of the housing 10, if the different polarities of the magnets M1a, M1b and the magnets M2a, M2b face each other, the magnets M1a, Magnetic attraction force is generated between M1b and the magnets M2a and M2b, and the non-contact power receiving unit 20 is installed in the correct mounting direction so as to face the front surface of the housing 10. For example, when the mounting direction is shifted by 90 degrees, the same polarity of the magnets M1a, M1b and the magnets M2a, M2b are opposed to each other, and a magnetic repulsive force is generated between the magnets M1a, M1b and the magnets M2a, M2b. Thus, the non-contact power receiving unit 20 cannot be installed facing the front surface of the housing 10. This is because there is a mounting direction in which the mutual electromagnetic coupling is maximized due to the respective core shapes of the primary coil L1 and the secondary coil L2, so that the non-contact power receiving unit 20 is always installed in the correct mounting direction. The correct mounting direction described above is the direction in which the degree of electromagnetic coupling between the primary coil L1 and the secondary coil L2 is the highest. At this time, the magnetic attractive force generates a force capable of attaching each DC device U incorporating the non-contact power receiving unit 20 or the non-contact power receiving unit 20 alone to the front surface of the housing 10.

  Therefore, if the user brings the DC device U including the non-contact power receiving unit 20 or the non-contact power receiving unit 20 alone close to the front surface of the housing 10, the non-contact power receiving unit 20 faces the housing 10 due to the magnetic attraction force. Can be installed correctly. The non-contact power receiving unit 20 receives power from the primary coil L 1 in a non-contact manner by electromagnetic induction due to the high-frequency magnetic field generated by the primary coil L 1 in the housing 10 and supplies operating power to the functional unit 21 of the DC device U.

  Thus, since the non-contact power receiving unit 20 of the DC device U is attached to the front surface of the housing 10 of the non-contact power supply adapter 1 by using magnetic attraction force, attachment means such as screws and locking means are separately provided. There is no need to provide it, and the structure can be simplified and the mounting work can be simplified.

  Thus, the non-contact power supply adapter 1 can constitute a non-contact power supply means for generating a high frequency magnetic field by inserting the plug blades 11 and 11 into the plug blade insertion port 151a of the AC outlet 151. If the DC device U provided with the non-contact power receiving unit 20 or the non-contact power receiving unit 20 alone is attached to the single housing 10, power can be supplied to the DC device U in a non-contact manner. Contactless power feeding can be easily performed at low cost.

  Further, the relative position and installation environment of the primary coil L1 in the non-contact adapter 1 and the secondary coil L2 of the non-contact power receiving unit 20, the frequency, size and range of the high-frequency magnetic field generated by the primary coil L1, and the magnet M1a , M1b and the structure of the attaching means composed of the magnets M2a, M2b are standardized by standards. That is, the high-frequency magnetic field generated by the non-contact adapter 1 is a magnetic field having a predetermined frequency and a predetermined intensity based on a predetermined standard, and the non-contact power receiving unit 20 is installed in the non-contact adapter 1. At this time, the relative position (distance, direction, etc.) with the non-contact adapter 1 is also determined by a predetermined standard. Therefore, the electric power received by the non-contact power receiving unit 20 from the non-contact adapter 1 is within a specified range, and the configuration of the functional unit 21 can be simplified (for example, the operable input range can be designed to be narrow). In addition to the standardization of each part as described above, the user can easily install the DC device U to be used in the non-contact power supply adapter 1 and can obtain excellent usability.

  The contactless power supply adapter 1 of the present embodiment is configured to be attached to the AC outlet 151, but may be configured to be attached to the DC outlet 131 (see FIG. 5). In this case, the rectifying / smoothing means is not required at the input stage of the high-frequency power generation circuit 12. Furthermore, the load is not limited to a DC device, and may be an AC device. In this case, a DC / AC conversion device such as an inverter device is provided at the output stage of the non-contact power receiving unit 20.

It is a figure which shows the structure of the non-contact electric power feeding system using the non-contact electric power feeding adapter of embodiment. (A) (b) (c) It is a figure which shows the external appearance of a non-contact electric power feeding adapter. It is a figure which shows the circuit structure of a non-contact electric power feeding adapter. (A) is a figure which shows arrangement | positioning of the magnet which a non-contact electric power feeding adapter comprises, (b) is a figure which respectively shows arrangement | positioning of the magnet which a non-contact power receiving part comprises. It is a figure which shows the whole structure of a power distribution system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Non-contact electric power supply adapter 10 Housing 11 Plug blade 12 High frequency electric power generation circuit L1 Primary coil M1a, M1b Magnet 20 Non-contact power-receiving part 21 Function part U DC equipment M2a, M2b Magnet 151 AC outlet 151a Plug blade insertion port

Claims (4)

A housing constituting the outer shell;
A plug blade that protrudes from the housing and is inserted into and removed from a plug blade insertion port provided in the outlet,
A high-frequency power generation circuit that converts the power supplied from the outlet via the plug blade into a high-frequency current, which is housed in the housing, and
A coil housed in a housing and supplied with a high frequency current from a high frequency power generation circuit to generate a high frequency magnetic field;
A non-contact power supply adapter comprising: a non-contact power receiving unit that attaches to a housing a non-contact power receiving unit that supplies non-contact power received from the coil to a load using electromagnetic induction by a high-frequency magnetic field generated by the coil.   The attachment means is composed of a magnet that generates an attractive force with a magnet provided in the non-contact power receiving unit, and the non-contact power receiving unit is detachably mounted at a position facing the coil on one surface of the housing. The contactless power supply adapter according to claim 1.   3. The non-contact according to claim 2, wherein the polarities of the magnets respectively provided in the housing and the non-contact power receiving unit are set so that the non-contact power receiving unit is attached to the housing in a predetermined direction. Power supply adapter.   2. The high-frequency power generation circuit includes an operation unit that varies a high-frequency current supplied to the coil, and adjusts the high-frequency current supplied to the coil in accordance with an operation of the operation unit. 3. The non-contact power supply adapter according to any one of 3.

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