JP2009159675A - Noncontact power feed panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a noncontact power feed panel which can be simply installed on a power distribution system and readily feeds power to the loads with high safety. <P>SOLUTION: The noncontact power feeding panel P is provided with: an elongated casing 1 set on an installation surface of a structure; a plurality of noncontact power feed sections 10 disposed on a plurality of positions along the longitudinal direction in the casing 1 and each generating a high-frequency magnetic field; and an attaching means for attaching a noncontact power receiving section 20 feeding the power received in a noncontact manner from the noncontact power feeding sections 10 to a DC apparatus U to the external surface of the casing 1 opposing each of the noncontact power feed sections 10 by utilizing electromagnetic induction caused by the high-frequency magnetic field generated from each of the noncontact power feed sections 10. The attaching means includes magnets M1a, M1b of the noncontact power feed section 10 and magnets M2a, M2b of the noncontact power receiving section 20. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

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

  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 distribution system installed in these buildings has openings in the construction surfaces of the building materials that make up the walls, ceilings, and floors of the building, and contact outlets such as outlets and hook ceilings installed in these openings. In addition, a contact (conductor) provided directly on an electrical device or a contact provided via a connection line is in direct contact to supply power to each electrical device (see, for example, Patent Documents 1 and 2).
Japanese Patent Laid-Open No. 2-276212 Japanese Patent Laid-Open No. 7-15835

  However, in the above conventional technique, in order to install outlets such as outlets, it is necessary to provide openings in the wall surface, ceiling surface, and floor surface of the building, and the appearance of the building after installation is not good. In addition, the user needs to connect a contact of an electric device to an outlet such as an outlet, and there is a risk of electric shock because a conductor for power feeding is exposed.

  The present invention has been made in view of the above reasons, and an object thereof is to provide a non-contact power supply panel that can simplify the construction of a power distribution system and can easily supply power to a load and has high safety. It is in.

  The invention according to claim 1 is a long housing installed on a construction surface of a structure, and a plurality of non-contact power feedings that are installed at a plurality of positions along the longitudinal direction in the housing to generate high-frequency magnetic fields. And a non-contact power receiving unit that supplies non-contact power received from the non-contact power supply unit to the load using electromagnetic induction by a high-frequency magnetic field generated by each non-contact power supply unit. And mounting means for attaching to the outer surface of the body.

  According to the present invention, since a non-contact power supply panel can be installed to supply power to the load in a non-contact manner, it is not necessary to provide a contact outlet such as an outlet or a hook ceiling, and the construction can be simplified. In addition, the user can operate the load simply by mounting the non-contact power receiving unit opposite to the non-contact power feeding unit, which makes it easy to use and does not expose the conductor for power feeding. There is no. Thus, by using the non-contact power supply panel of this embodiment, it is possible to simplify the construction of the power distribution system, and to realize a power distribution system that is easy to supply power to the load and has high safety.

  According to a second aspect of the present invention, in the first aspect, the attachment means generates a suction force via the housing between the non-contact power feeding unit and the non-contact power receiving unit, and the housing is generated by the suction force. A non-contact power receiving unit is detachably attached at a position facing the non-contact power feeding unit on the outer surface.

  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 of the present invention, the attachment means includes a non-contact power feeding unit on an outer surface of the housing by an attractive force generated between magnets provided in the non-contact power feeding unit and the non-contact power receiving unit. A non-contact power receiving unit is detachably attached at a position opposite to.

  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 fourth aspect of the present invention, in any one of the first to third aspects, the non-contact power feeding unit includes a coil that generates a high-frequency magnetic field when supplied with a high-frequency current, and is non-contact with each non-contact power feeding unit. A high-frequency magnetic field is generated by supplying a predetermined high-frequency current to a drive target detection unit that detects whether or not the power reception unit is disposed opposite to the coil of the non-contact power supply unit that is disposed opposite to the non-contact power reception unit And a driving means for making it happen.

  According to the present invention, not all the non-contact power feeding units are driven at all times, but only the non-contact power feeding units arranged so that the non-contact power receiving units are opposed to each other are driven, so that unnecessary power is consumed. Energy saving.

  According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the drive target detecting means is configured to switch a non-contact power feeding unit to be driven in a constant period during which only one of the plurality of non-contact power feeding units is driven. It is generated every hour, and the impedance viewed from the non-contact power feeding unit being driven during the detectable period is measured, and the non-contact power receiving unit is arranged to face the non-contact power feeding unit based on the measured impedance. It is characterized by determining whether or not.

  According to the present invention, it is possible to reliably detect whether or not the non-contact power receiving unit is arranged to face each non-contact power feeding unit.

  A sixth aspect of the present invention provides the housing according to any one of the first to fifth aspects, wherein the housing has the installation positions of the non-contact power feeding portions set in advance at a plurality of positions along the longitudinal direction in the housing. The LED has an LED element at a location corresponding to each installation position, and includes a lighting unit that lights the LED element when a non-contact power feeding unit is installed at the installation position corresponding to each LED element.

  According to this invention, the user only needs to attach the non-contact power receiving unit to the position where the LED element is lit, and the installation position can be easily understood.

  A seventh aspect of the present invention provides the housing according to any one of the first to fifth aspects, wherein the housing has the installation positions of the non-contact power feeding portions set in advance at a plurality of positions along the longitudinal direction in the housing. LED elements are provided at locations corresponding to the respective installation positions, and each LED element displays the power supply state of the non-contact power feeding unit at the installation position corresponding to the LED element.

  According to this invention, the user can easily recognize whether or not power is being supplied to the load.

  As described above, according to the present invention, it is possible to simplify the construction of the power distribution system, and to easily supply power to the load and to obtain safety.

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

(Embodiment 1)
In this embodiment, a contactless power supply system is provided in a building H such as a house, and contacts (conductors) or connecting wires provided directly on electrical equipment (loads) on contact outlets such as conventional outlets and hook ceilings. Instead of supplying electric power to the electric device performed by direct contact of the contact provided through the contact, electric power is supplied to the electric device in a non-contact manner.

  In the present embodiment, the power distribution system in the building H is constituted by a DC 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. 9, 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. 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, a residential alarm system K104 composed of an alarm DC device U ′ such as a fire detector, and the like. 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 composed of a lighting fixture (DC device U ′) arranged in advance in the building H and the lighting fixture (DC appliance 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.

  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.

  In the present embodiment, a non-contact power supply system is applied to a DC distribution system that supplies DC power to the electrical equipment K in the above distribution system, and FIG. 2 is a schematic diagram of a room R1 in the building H. The room R1 is surrounded by a wall surface G1 (only three wall surfaces are shown in FIG. 2), a ceiling surface G2 provided above, and a floor surface G3 provided below.

  And the panel P for non-contact electric power feeding of this embodiment is installed in the wall surface G1, the ceiling surface G2, and the floor surface G3 (collectively called the construction surface G) which are the construction surfaces of a structure. As shown in FIG. 1, the non-contact power feeding panel P has a casing 1 formed of a long resin as an outer shell, and the casing 1 is formed in a long rectangular box shape and has a front surface opened. It comprises a base plate 1a and a decorative cover 1b that is formed in a long rectangular box shape and has a rear surface opened, and the rear surface opening of the decorative cover 1b covers the front opening of the base plate 1a. Then, the rear surface of the base plate 1a is fixed to the construction surface G by using attachment means such as screwing.

  The DC supply line Wdc is disposed along the longitudinal direction on the base plate 1a side in the housing 1, and a plurality of non-contact power feeding units 10 used in the non-contact power feeding system are disposed along the longitudinal direction at predetermined intervals. Each non-contact power feeding unit 10 is connected to the DC supply line Wdc, so that a non-contact outlet is configured in place of the DC outlet 131 and the hooking ceiling 132 which are the contact-type DC outlets. ing. Further, the arrangement position of the non-contact power feeding unit 10 is determined in advance, and two LED elements 2a and 2b are provided on the side surface of the base plate 1a corresponding to each arrangement position.

  As shown in FIG. 3, the non-contact power supply unit 10 includes a high-frequency power generation circuit 11 that converts DC power supplied via the DC supply line Wdc into high-frequency power, The state detection circuit 12 detects a power supply state and outputs the detection signal, and the primary coil L1 that generates a high-frequency magnetic field when high-frequency power is supplied from the high-frequency power generation circuit 11.

  The high frequency power generation circuit 11 converts a DC voltage into a high frequency voltage by switching an internal switching element (not shown) at a high frequency, and applies the high frequency voltage to both ends of the primary coil L1 to apply the high frequency voltage to the primary coil L1. A high frequency current is supplied to the primary coil L1, and the primary coil L1 generates a high frequency magnetic field by the high frequency current. 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 state detection circuit 12 determines that the DC power supply is supplied from the DC supply line Wdc to the high frequency power generation circuit 11, determines that the state is energized, turns on the LED element 2a, and the high frequency power generation circuit 11 When the high-frequency current is supplied to the primary coil L1, it is determined that the power supply state is present, and the LED element 2b is turned on. In addition, the LED element 2a notifies the installation position of the non-contact power supply unit 10 in the non-contact power supply panel P together with confirmation of energization to the non-contact power supply unit 10.

  Then, a DC device U is attached to the non-contact power supply panel P. As shown in FIG. 2, an auxiliary illumination LED light U1 or the like is attached to the non-contact power supply panel P1 installed on the wall surface G1. The non-contact power feeding panel P2 installed on the ceiling surface G2 is attached with a ceiling light U2 for main illumination, a human sensor U3 used for a security system, an access point U4 used for a wireless LAN, and the like on the floor G3. A television device U5, a heating mat heater U6, and the like are attached to the installed non-contact power supply panel P3.

  As shown in FIG. 3, each DC device U includes a non-contact power receiving unit 20 used in a non-contact power supply system, and a functional unit 21 of each DC device (for example, a lighting function, a sensor function, a communication function, a LAN hub function, Heating function, etc.). The non-contact power receiving unit 20 includes a configuration (DC devices U1 to U4 in FIG. 2) integrated with the functional unit 21 in the DC device U, and the non-contact power receiving unit 20 as a single unit. There is a configuration (direct-current devices U5 and U6 in FIG. 2) for supplying operating power to a device body provided with a power cord CD. 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 unit 10, and the non-contact power receiving unit 20 can be easily attached and detached.

  The non-contact power reception unit 20 is attached to the front surface of the non-contact power supply panel P so as to face each non-contact power supply unit 10 in the non-contact power supply panel P. The non-contact power receiving unit 20 is electromagnetically coupled to the primary coil L1 of the non-contact power feeding unit 10 and a secondary voltage is induced by electromagnetic induction when the high frequency magnetic field generated by the non-contact power feeding unit 10 is linked. A coil L2, 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 to the rectified output on the positive side of the rectifier DB, and rectification via the inductor La A smoothing capacitor Ca that smoothes the voltage is supplied. The voltage across the smoothing capacitor Ca is supplied to the function unit 21 to serve as an operating power supply for the function unit 21. 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.

  In the present embodiment, the non-contact power reception unit 20 and the non-contact power reception unit 20 are provided on the front surface of the non-contact power supply panel P facing the built-in non-contact power supply unit 10 (position where the LED element 2a is disposed). There is provided attachment means for detachably attaching the DC device U comprising The user only needs to attach the DC device U to a position where the LED element 2a (position display and energization confirmation of the non-contact power supply unit 10) is lit, and the installation position of the DC device U can be easily understood.

  As shown in FIGS. 4A and 4B, the attachment means includes magnets M1a and M1b provided in the non-contact power feeding unit 10 and magnets M2a and M2b provided in the non-contact power receiving unit 20. . The magnets M1a and M1b provided in the non-contact power feeding unit 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 non-contact power feeding unit 10 is attached to the inside of a rectangular frame formed so as to face each other. Further, 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, and the magnets M2a and M2b are different from each other. 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 non-contact power feeding unit 10 and the non-contact power receiving unit 20 face each other through the non-contact power feeding panel P, the different polarities of the magnets M1a and M1b and the magnets M2a and M2b face each other. A magnetic attraction force is generated between the magnets M1a and 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 non-contact power feeding unit 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 non-contact power feeding unit 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 non-contact power feeding panel P.

  Therefore, if the user brings the DC device U provided with the non-contact power receiving unit 20 or the non-contact power receiving unit 20 alone near the LED element 2a of the non-contact power feeding panel P, the non-contact power receiving unit is caused by the magnetic attraction force. 20 is correctly attached facing the non-contact power feeding unit 10. Then, the non-contact power receiving unit 20 receives power from the non-contact power feeding unit 10 in a non-contact manner by electromagnetic induction by a high-frequency magnetic field generated by the non-contact power feeding unit 10 and supplies operating power to the functional unit 21 of the DC device U.

  Further, the relative position and installation environment of the primary coil L1 in the non-contact power feeding unit 10 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, magnets The structure of the attaching means comprising M1a, M1b and magnets M2a, M2b is standardized according to the standard. That is, the high-frequency magnetic field generated by the non-contact power supply unit 10 is a magnetic field having a predetermined frequency and a predetermined intensity based on a predetermined standard within a predetermined range. The position where 10 is incorporated is also determined by a predetermined standard, and when the non-contact power receiving unit 20 is installed on the non-contact power feeding panel P, the relative position (distance, direction, etc.) with the non-contact power feeding unit 10 is also determined. It is determined by a predetermined standard. Therefore, the power received by the non-contact power receiving unit 20 from the non-contact power feeding unit 10 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). .

  And the non-contact electric power feeding part 10 is each integrated in the several location in the panel P for non-contact electric power feeding, and a user is direct-current-directed to an appropriate position according to the direct current | flow apparatus U to be used with the standardization of said each part. The device U or the non-contact power receiving unit 20 alone can be easily installed, and excellent usability can be obtained.

  As described above, in the present embodiment, in the DC power distribution system (see FIG. 9), by installing the non-contact power supply panel P in the room R1, it is possible to supply power to the DC device U in the room R1 in a non-contact manner. It is not necessary to provide a contact type DC outlet such as the outlet 131 or the hooking ceiling 132 in the building H, and the construction can be simplified. Further, since the user can operate the DC device U simply by attaching the DC device U to be used to the non-contact power supply panel P, it is easy to use, and the electric conductor for power supply is not exposed. There is no danger. Thus, by using the non-contact power supply panel P of the present embodiment, it is possible to simplify the construction of the power distribution system and realize a power distribution system that is easy to supply power to the DC equipment U and has high safety. .

  Further, since the DC device U and the non-contact power receiving unit 20 alone are mounted opposite to the non-contact power feeding unit 10 in the non-contact power feeding panel P by using magnetic attraction force, mounting means such as screws and locking means There is no need to provide a separate structure, and the configuration can be simplified and the mounting operation can be simplified.

  Further, the DC device U or the non-contact power receiving unit 20 alone may be attached to the non-contact power feeding panel P by attaching means such as screws, hook-and-loop fasteners, suction cups, adhesive resin, and double-sided tape steps. You may use a means together with the attachment means using the said magnet.

  Next, in the present embodiment, a plurality of non-contact power supply units 10 are arranged in one non-contact power supply panel P. However, not all the non-contact power supply units 10 are always driven, but non-contact power reception is performed. The structure which drives only the non-contact electric power feeding part 10 with which the part 20 is arrange | positioned facing is provided, and it demonstrates below using FIG.

  First, the non-contact power supply unit 10 in the non-contact power supply panel P is set as one block B (in FIG. 5, four non-contact power supply units 10a to 10d are arranged in the non-contact power supply panel P to form the block B. DC power is supplied from the DC supply line Wdc to the non-contact power feeding units 10a to 10d via the contacts 311 of the relays 31a to 31d. The relay coils 312 of the relays 31a to 31d are connected between the control power source Vcc and the ground level via the collectors and emitters of the transistors 32a to 32d, and the bases of the transistors 32a to 32d are connected to the controller 40. Connected to the output.

  The controller 40 individually controls the outputs to the bases of the transistors 32a to 32d to turn on and off the transistors 32a to 32d. The relay coil 312 is connected to the turned-on transistors 32 (32a to 32d). In the relay 31 (31a to 31d), the contact 311 is turned on, DC power is supplied to the corresponding non-contact power supply unit 10 (10a to 10d), and the non-contact power supply unit 10 is driven.

  The relays 31a to 31d, the transistors 32a to 32d, and the controller 40 constitute the drive control unit A. In the drive control unit A, the non-contact power reception unit 20 is disposed so as to face the non-contact power supply units 10a to 10d. Driving object detecting means for detecting whether or not, and driving means for generating a high-frequency magnetic field by supplying a rated current to the primary coil L1 of the non-contact power feeding section 10 disposed so as to face the non-contact power receiving section 20 are formed. ing. The drive control unit A is housed in the non-contact power feeding panel P.

  First, the controller 40 generates a period during which only one of the four transistors 32a to 32d is turned on at regular intervals during a normal power feeding operation, so that one of the four non-contact power feeding units 10a to 10d. A detectable period in which only one is driven and the others are stopped is generated at regular intervals by sequentially switching the non-contact power feeding unit 10 to be driven. That is, a detectable period T1 in which only the non-contact power supply unit 10a is driven → a detectable period T2 in which only the non-contact power supply unit 10b is driven → a detectable period T3 in which only the non-contact power supply unit 10c is driven → only the non-contact power supply unit 10d Detectable periods T4 during which are driven are sequentially generated at regular intervals during normal power feeding operation, and this operation is repeated.

  And the input part of the controller 40 is connected between the both ends of each primary coil L1 of non-contact electric power feeding part 10a-10d (refer FIG. 3), and the controller 40 is non-contact electric power feeding part 10a in the detectable period T1-T4. -10d, the impedance of the power reception side (hereinafter referred to as power reception side impedance) is measured. The power receiving side impedance is different between the case where the non-contact power receiving unit 20 is not installed facing the non-contact power feeding unit 10 and the case where the non-contact power receiving unit 20 is installed facing the non-contact power feeding unit 10. The controller 40 has different values, and the controller 40 has a normal value (power-receiving-side impedance when the non-contact power-receiving unit 20 is not installed) to a predetermined value (power-receiving-side impedance when the non-contact power-receiving unit 20 is installed). It is determined that the non-contact power receiving unit 20 has been installed when the change is made. The change pattern of the power-receiving-side impedance before and after installation of the non-contact power receiving unit 20 includes each setting of the primary coil L1 and the secondary coil L2 (self-inductance, mutual inductance, etc.), the non-contact power receiving unit 20 and the functional unit 21. For example, when a metal plate, a magnetic body, or the like is arranged facing the non-contact power feeding unit 10, the power receiving side impedance change pattern is designed so as to change in a predetermined pattern. Is different from the predetermined pattern, the controller 40 does not drive the non-contact power feeding unit 10.

  In this manner, the controller 40 determines whether or not the non-contact power receiving unit 20 is installed facing each non-contact power feeding unit 10 in the detectable periods T1 to T4 that occur at regular intervals during a normal power feeding operation. The non-contact power receiving unit 20 is driven to drive all the non-contact power feeding units 10 opposed to each other, and the normal to the non-contact power receiving unit 20 except for the detectable periods T1 to T4. The power feeding operation is performed.

  That is, as shown in the flowchart of FIG. 6, the controller 40 first turns on only one of the four transistors 32 a to 32 d (S 1), drives the corresponding non-contact power feeding unit 10, and The power receiving side impedance viewed from the non-contact power feeding unit 10 is measured (S2), and whether or not the non-contact power receiving unit 20 is installed facing the non-contact power feeding unit 10 is determined based on the measured power receiving side impedance. (S3). And based on this determination result, the output of the non-contact power feeding unit 10 is adjusted, and when the non-contact power receiving unit 20 is installed, the driving state of the non-contact power feeding unit 10 is continuously set to the rated output, If the non-contact power receiving unit 20 is not installed, the transistor 32 that was turned on in step S1 is turned off to stop driving the non-contact power feeding unit 10 and make the output zero (S4). Thereafter, normal power feeding is performed to drive all the non-contact power feeding units 10 that are installed so that the non-contact power receiving unit 20 is opposed to each other (S5), and after a certain period of time (S6), among the four transistors 32a to 32d The next one is turned on (S7), and the above steps S2 to S7 are repeated.

  In addition, in the detectable period T1 to T4, only one of the non-contact power supply units 10a to 10d is driven and the other non-contact power supply unit 10 is stopped. The non-contact power receiving unit 20 installed has a period during which the power cannot be received at regular intervals during a normal power feeding operation. Therefore, the smoothing capacitor Ca of the non-contact power receiving unit 20 is set to a capacity capable of supplying power to the functional unit 21 in the detectable periods T1 to T4, and compensates for the power supply operation in the non-power receiving period.

  Further, the state detection circuit 12 determines that the power supply state is present when the high-frequency power is supplied from the high-frequency power generation circuit 11 to the primary coil L1, and turns on the LED element 2b. It can be easily recognized whether or not power is supplied.

  In this way, not all the non-contact power supply units 10 are driven all the time, but only the non-contact power supply unit 10 disposed so that the non-contact power reception unit 20 is opposed to each other is driven, and thus unnecessary power is consumed. Energy saving can be achieved.

  Moreover, you may install the panel P for non-contact electric power feeding of this embodiment in the location which faces the water circumferences, such as a bathroom in the building H, and the exterior of the building H. FIG.

(Embodiment 2)
The non-contact power feeding panel P of the present embodiment has substantially the same configuration as that of the first embodiment, but the configuration for detecting whether or not the non-contact power receiving unit 20 is disposed facing the non-contact power feeding unit 10 is different. . In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and description is abbreviate | omitted.

  The contactless power supply unit 10 of the present embodiment is always connected to the DC supply line Wdc, and the high frequency power generation circuit 11 can switch the high frequency current flowing through the primary coil L1 to the rated current, standby current, and zero ( Rated current> standby current> zero). In a standby state in which the non-contact power receiving unit 20 is not disposed so as to face the non-contact power feeding unit 10, a standby current smaller than the rated current is passed through the primary coil L1.

  As shown in FIG. 7, the non-contact power receiving unit 20 includes a modulation unit 22 connected to both ends of the secondary coil L <b> 2. When the non-contact power receiving unit 20 is installed facing the non-contact power feeding unit 10, A secondary voltage is generated at both ends of the secondary coil L2, and a voltage obtained by rectifying and smoothing the secondary voltage is used as an operation power supply, and a power supply request signal is superimposed on the secondary voltage to be modulated (for example, a sinusoidal secondary voltage). The voltage waveform is changed every predetermined period). Then, a signal induced by the power supply request signal superimposed on the secondary voltage is generated at both ends of the primary coil L1 of the non-contact power supply unit 10, and the high-frequency power generation circuit 11 starts from the voltage at both ends of the primary coil L1. By demodulating the induced signal, it is detected that the non-contact power reception unit 20 is disposed facing the signal. And if the high frequency electric power generation circuit 11 detects that the non-contact power receiving part 20 is arrange | positioned facing, a rated current will be sent through the primary coil L1, and the normal electric power feeding to the non-contact power receiving part 20 will be started.

  Even during normal power feeding, the high-frequency power generation circuit 11 continues the demodulation process for the voltage across the primary coil L1, and when the induced signal is no longer detected, it determines that the non-contact power receiving unit 20 has been removed, The current flowing through the coil L1 is switched to the standby current.

  That is, the high-frequency power generation circuit 11 and the modulation unit 22 form driving target detection means for detecting whether or not the non-contact power receiving unit 20 is disposed so as to face the non-contact power feeding units 10a to 10d. The circuit 11 forms drive means for generating a high-frequency magnetic field by supplying a rated current to the primary coil L1 of the non-contact power feeding unit 10 disposed so as to face the non-contact power receiving unit 20.

  In this detection method, since the other non-contact power supply unit 10 can detect the installation state of the non-contact power reception unit 20 in a state where power supply to the non-contact power reception unit 20 is continued, as in the first embodiment, There is no need to increase the capacity of the smoothing capacitor Ca of the non-contact power receiving unit 20. Furthermore, it is not necessary to provide the controller 40.

  Moreover, not all the non-contact electric power feeding parts 10 always flow a rated current to the primary coil L1, but only the non-contact electric power feeding part 10 with which the non-contact electric power receiving part 20 is arrange | positioned facing is applied to a primary coil L1. Since the other non-contact power receiving unit flows a standby current smaller than the rated current to the primary coil L1, unnecessary power consumption can be suppressed and energy saving can be achieved.

(Embodiment 3)
The non-contact power feeding panel P of the present embodiment has substantially the same configuration as that of the first embodiment, but the configuration for detecting whether or not the non-contact power receiving unit 20 is disposed facing the non-contact power feeding unit 10 is different. . In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1 or 2, and description is abbreviate | omitted.

  The contactless power supply unit 10 of the present embodiment is always connected to the DC supply line Wdc, and the high frequency power generation circuit 11 can switch the high frequency current flowing through the primary coil L1 to the rated current, standby current, and zero ( Rated current> standby current> zero). In a standby state in which the non-contact power receiving unit 20 is not disposed so as to face the non-contact power feeding unit 10, a standby current smaller than the rated current is passed through the primary coil L1.

  Further, as shown in FIG. 8, the wireless power receiving unit 10 is provided with a wireless receiving unit 13, and the wireless power receiving unit 20 is provided with a wireless transmitting unit 23, between the wireless transmitting unit 23 and the wireless receiving unit 13. Then, transmission / reception of radio signals by radio waves is performed.

  When the non-contact power receiving unit 20 is installed facing the non-contact power feeding unit 10, a secondary voltage is generated at both ends of the secondary coil L2 by the standby current of the primary coil L1, and the secondary voltage is rectified and smoothed. The power transmission request signal is transmitted from the wireless transmission unit 23 using the obtained voltage as an operating power source. Then, the wireless reception unit 13 of the non-contact power supply unit 10 receives this power supply request signal, and the high-frequency power generation circuit 11 detects that the non-contact power reception unit 20 is disposed facing the power supply request signal. . And if the high frequency electric power generation circuit 11 detects that the non-contact power receiving part 20 is arrange | positioned facing, a rated current will be sent through the primary coil L1, and the normal electric power feeding to the non-contact power receiving part 20 will be started.

  If the power supply request signal is not received during normal power supply, the high-frequency power generation circuit 11 determines that the non-contact power reception unit 20 has been removed, and switches the current flowing through the primary coil L1 to the standby current.

  That is, the driving target detection means for detecting whether or not the non-contact power receiving unit 20 is disposed opposite to the non-contact power feeding units 10a to 10d by the high-frequency power generation circuit 11, the radio reception unit 13, and the radio transmission unit 23. The driving means for generating a high frequency magnetic field by supplying a rated current to the primary coil L1 of the non-contact power feeding unit 10 disposed so as to face the non-contact power receiving unit 20 is formed in the high-frequency power generation circuit 11. .

  In this detection method, since the other non-contact power supply unit 10 can detect the installation state of the non-contact power reception unit 20 in a state where power supply to the non-contact power reception unit 20 is continued, as in the first embodiment, There is no need to increase the capacity of the smoothing capacitor Ca of the non-contact power receiving unit 20. Furthermore, it is not necessary to provide the controller 40.

  Moreover, not all the non-contact electric power feeding parts 10 always flow a rated current to the primary coil L1, but only the non-contact electric power feeding part 10 with which the non-contact electric power receiving part 20 is arrange | positioned facing is applied to a primary coil L1. Since the other non-contact power receiving unit flows a standby current smaller than the rated current to the primary coil L1, unnecessary power consumption can be suppressed and energy saving can be achieved.

  Moreover, transmission / reception of the power supply request signal from the non-contact power reception unit 20 to the non-contact power supply unit 10 may be performed via a wire.

  In the first to third embodiments, the non-contact power feeding system is applied to the DC power distribution system in the power distribution system shown in FIG. 9, but the same non-contact power feeding panel as that of each embodiment is applied to the AC power distribution system (not shown). The used non-contact power feeding system may be applied. In this case, a rectifying means for rectifying the commercial power supply is provided at the input stage of the non-contact power supply unit 10, and a DC / AC conversion device such as an inverter device is provided at the output stage of the non-contact power reception unit 20.

3 is a diagram illustrating a configuration of a non-contact power supply panel according to Embodiment 1. FIG. It is a figure which shows the installation state same as the above. It is a figure which shows the outline of the circuit structure of the panel for non-contact electric power feeding same as the above. (A) is the figure which shows arrangement | positioning of the magnet which the non-contact electric power feeding part same as the above comprises, (b) is a figure which respectively shows arrangement | positioning of the magnet which the non-contact electric power receiving part comprises. It is a figure which shows the structure of the drive control part of a non-contact electric power feeding part same as the above. It is a figure which shows the operation | movement flowchart of a drive control part same as the above. It is a figure which shows the outline of the circuit structure of the panel for non-contact electric power feeding of Embodiment 2. FIG. It is a figure which shows the outline of the circuit structure of the panel for non-contact electric power feeding of Embodiment 3. FIG. It is a figure which shows the whole structure of a power distribution system.

Explanation of symbols

P Non-contact power supply panel 1 Housing 1a Base plate 1b Cosmetic cover 10 Non-contact power supply unit 20 Non-contact power reception unit M1a, M1b Magnet M2a, M2b Magnet U DC device

Claims (7)

  A long case installed on the construction surface of the structure, a plurality of non-contact power supply units that generate high-frequency magnetic fields installed at a plurality of positions along the longitudinal direction in the case, and each non-contact power supply Mounting means for attaching a non-contact power receiving unit that supplies non-contact power received from the non-contact power feeding unit to a load using electromagnetic induction by a high-frequency magnetic field generated by the unit on an outer surface of the housing facing each non-contact power feeding unit; A non-contact power supply panel characterized by comprising:   The attachment means generates a suction force via the housing between the non-contact power feeding unit and the non-contact power receiving unit, and the suction force causes a non-contact at a position facing the non-contact power feeding unit on the outer surface of the housing. The contactless power supply panel according to claim 1, wherein the contact power receiving unit is detachably attached.   The attachment means can attach and detach the non-contact power receiving portion at a position facing the non-contact power feeding portion on the outer surface of the housing by an attractive force generated between magnets provided in the non-contact power feeding portion and the non-contact power receiving portion, respectively. The non-contact power supply panel according to claim 2, wherein the non-contact power supply panel is attached to the panel. The non-contact power supply unit includes a coil that generates a high-frequency magnetic field by being supplied with a high-frequency current,
A drive target detection unit that detects whether or not a non-contact power receiving unit is disposed opposite to each non-contact power feeding unit, and a predetermined high frequency to a coil of the non-contact power feeding unit that is disposed so as to face the non-contact power receiving unit. 4. The non-contact power supply panel according to claim 1, further comprising a driving unit that supplies a current to generate a high-frequency magnetic field.   The drive target detecting means generates a detectable period for driving only one of the plurality of non-contact power supply units at a predetermined time by sequentially switching the non-contact power supply unit to be driven, and is being driven during the detectable period Measuring the impedance of the non-contact power feeding unit viewed from the power receiving side, and determining whether or not the non-contact power receiving unit is disposed opposite to the non-contact power feeding unit based on the measured impedance The panel for non-contact electric power feeding according to claim 4.   The housing has preset the installation positions of the non-contact power feeding unit at a plurality of positions along the longitudinal direction in the housing, the outer surface of the housing is provided with LED elements at locations corresponding to the respective installation positions, 6. The non-contact power feeding panel according to claim 1, further comprising a lighting unit that turns on the LED element when the non-contact power feeding unit is installed at an installation position corresponding to each LED element.   The housing has preset the installation positions of the non-contact power feeding unit at a plurality of positions along the longitudinal direction in the housing, the outer surface of the housing is provided with LED elements at locations corresponding to the respective installation positions, 6. The non-contact power supply panel according to claim 1, wherein each LED element displays a power supply state of a non-contact power supply unit at an installation position corresponding to the LED element.

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