JP5314277B2 - Bathtub with non-contact power supply function - Google Patents

Description

  The present invention relates to a bathtub with a non-contact power feeding function.

Conventionally, there is a bathtub with a non-contact power supply function, and power is supplied from a plurality of non-contact power supply units installed in the bathtub to an electric device such as a massage device or a lighting device in the bathtub in a non-contact manner. In addition, an electric device can be used in a bathtub (for example, see Patent Document 1).
JP 2004-254805 A

  In the above-mentioned prior art, the power supply operation from the non-contact power supply unit is driven by detecting that the device main body equipped with the non-contact power reception unit is installed at a predetermined position of the bathtub container, There is a description that the non-contact power feeding unit is not driven when the device main body is not installed at a predetermined position of the bathtub container. However, a specific configuration for distinguishing between a non-contact power supply unit in which a power supply destination electrical device is installed and a non-contact power supply unit in which a power supply destination electrical device is not installed is not disclosed. Realization was difficult.

  The present invention has been made in view of the above reasons, and its purpose is to detect unnecessary power consumption by detecting a non-contact power feeding unit in which a power supply destination electrical device is installed among a plurality of non-contact power feeding units. The object is to provide a bathtub that can be suppressed and save energy.

Invention of Claim 1 is arrange | positioned in the bathtub wall which stores hot water on the one surface side of a bottom wall and a side wall, the inside of the bottom wall or side wall of a bathtub container, or the other surface side of the bottom wall or side wall of a bathtub container, A non-contact power supply unit that generates a high-frequency magnetic field, and that supplies power received from the non-contact power supply unit in a non-contact manner to the load using electromagnetic induction caused by the high-frequency magnetic field generated by the non-contact power supply unit The power receiving unit is a bathtub with a non-contact power feeding function in which the power receiving unit is disposed at a position facing the non-contact power feeding unit on one side of the bottom wall or side wall of the bathtub container, and drives only one of the plurality of non-contact power feeding units The non-contact power feeding unit to be driven is sequentially switched and generated every fixed time, and the impedance viewed from the non-contact power feeding unit being driven in the detectable period is measured and the measured impedance is Therefore, it is determined whether or not the non-contact power receiving unit is disposed to face each non-contact power feeding unit by determining whether or not the non-contact power receiving unit is disposed to face the non-contact power feeding unit. Attraction generated between magnets provided in the drive target detection unit, the driving unit that drives only the non-contact power feeding unit arranged so that the non-contact power receiving unit faces each other, and the non-contact power feeding unit and the non-contact power receiving unit Mounting means for detachably attaching the non-contact power receiving unit to a position facing the non-contact power feeding unit on one surface side of the bottom wall or side wall of the bathtub container by force, the non-contact power receiving unit being attached to the bottom wall or side wall of the bathtub container When it is moved on one side, the non-contact power feeding part is pulled by the non-contact power receiving part by the magnetic attraction force, and the inside of the bottom wall or side wall of the bathtub container or the other side of the bottom wall or side wall of the bathtub container the Japanese to move in the same direction To.

According to the present invention, it is possible to reliably detect whether or not the non-contact power receiving unit is disposed so as to face the non-contact power feeding unit. Since only the non-contact power feeding unit disposed with the power receiving unit facing each other is driven, energy saving can be achieved without consuming unnecessary power. Further, the user can install the non-contact power receiving unit at an appropriate position according to the load to be used, and can obtain excellent usability. Further, it is not necessary to separately provide mounting means such as screws and locking means, and the configuration can be simplified and the mounting work can be simplified. In addition, the user can easily change the power feeding point depending on the type of load to be used and how to use it.

According to a second aspect of the present invention, in the first aspect, the driving unit is configured to output, at a rated output, the non-contact power feeding unit in which the non-contact power receiving unit is disposed facing the non-contact power receiving unit based on a detection result of the driving target detection unit. It drives, The said non-contact electric power feeding part which the said non-contact electric power receiving part is arrange | positioned facing is stopped, It is characterized by the above-mentioned.

As described above, according to the present invention, it is possible to detect a non-contact power supply unit in which a power supply destination electrical device is installed among a plurality of non-contact power supply units, suppress unnecessary power consumption, and save energy. There is an effect that can be done. Further, the user can install the non-contact power receiving unit at an appropriate position according to the load to be used, and can obtain excellent usability. Further, it is not necessary to separately provide mounting means such as screws and locking means, and the configuration can be simplified and the mounting work can be simplified. In addition, the user can easily change the power feeding point depending on the type of load to be used and how to use it.

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

(Embodiment 1)
The bathtub of this embodiment has a non-contact power supply function, and is provided on a contact outlet such as a conventional outlet via a contact (conductor) provided directly on an electric device (load) or a connection line. Instead of supplying electric power to an electric device performed by direct 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. 8, 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 handling 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 composed of a DC equipment U ′ connected to a DC 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 about 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 the 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 coordination control unit 113 performs charge / discharge of the secondary battery 162 and coordination 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 bathtub 1 with a non-contact function of the present embodiment, the non-contact power supply system is applied to a DC power distribution system that supplies DC power to DC devices in the above power distribution system, and the appearance is shown in FIG. The bathtub 1 includes a bathtub container 1 a in which a side wall 3 is raised from four rounds of a flat rectangular bottom wall 2 to form a tank portion 4 surrounded by the bottom wall 2 and the side wall 3. This bathtub container 1a is installed along the side surface P of bathroom R1 with one long side and one short side.

  As shown in FIG. 2, the side wall 3 and the bottom wall 2 of the bathtub container 1 a are formed hollow, and a plurality of non-contact power feeding units 10 are mounted in the side wall 3 and the bottom wall 2, and the side surface of the bathroom R <b> 1. A DC supply line Wdc disposed in P is introduced into the side wall 3 and the bottom wall 2 and connected to each non-contact power feeding unit 10, and DC power is supplied to each non-contact power feeding unit 10.

  Furthermore, the electric power feeding sheet | seat X incorporating the some non-contact electric power feeding part 10 is laid on the outer surface of the side wall 3 of the bathtub container 1a. The power supply sheet X includes a connection portion 51 led out from the side wall 3 side surface of the resin sheet material 50, a distribution path 52 disposed in the sheet material 50 and connected to the connection portion 51, and the sheet material 50. And a plurality of non-contact power feeding units 10 connected to the power distribution path 52. The connecting portion 51 is connected to the DC supply line Wdc in the side wall 3, and DC power is supplied to each non-contact power feeding portion 10 through the connecting portion 51 and the distribution path 52.

  Each non-contact power supply unit 10 constitutes a non-contact type outlet, and as shown in FIG. 3, the non-contact power supply unit 10 converts DC power supplied via the DC supply line Wdc to high-frequency power. The high-frequency power generation circuit 11 for converting to a high-frequency power generation circuit 11 and a primary coil L1 that generates a high-frequency magnetic field when high-frequency power is supplied from the high-frequency power generation circuit 11. Moreover, the mark which shows a power feeding point is given to the location which opposes the non-contact electric power feeding part 10 in the inner surface (surface which comprises the tank part 4) of the side wall 3 and the bottom wall 2 of the bathtub container 1a, and the user in bathroom R1 is visual The power supply point can be recognized. FIG. 3 illustrates the arrangement on the side wall 3.

  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.

  And each DC apparatus U, such as a speaker module with a communication function, an LED lighting apparatus, a bubble generator, and a massage apparatus, as shown in FIG. 3, the non-contact electric power receiving part 20 used for a non-contact electric power feeding system, and each DC apparatus Functional unit 21 (for example, a speaker function, an illumination function, a bubble generation function, a massage vibration 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 may be used. When the non-contact power receiving unit 20 is formed as a single unit, the device body can be arbitrarily arranged regardless of the position of the non-contact power feeding unit 10.

  The non-contact power receiving unit 20 is disposed at each position (power feeding point) facing each non-contact power feeding unit 10 on the inner surface of the side wall 3 and the bottom wall 2 of the bathtub container 1a. 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 and serves as an operating power source 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 addition, the above-mentioned non-contact electric power feeding part 10, the non-contact electric power receiving part 20, the function part 21, and the direct current | flow apparatus U have a waterproof structure.

  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 to the inner surface of the side wall 3 and the bottom wall 2 of the bathtub container 1a is provided. .

  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, and the end surfaces of the magnets M1a and M1b that are different from each other 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.

  Accordingly, when the non-contact power feeding unit 10 and the non-contact power receiving unit 20 face each other via the side wall 3 and the inner surface of the bottom wall 2 of the bathtub container 1a, the different polarities of the magnets M1a and M1b and the magnets M2a and M2b If they face each other, a magnetic attractive force is generated between the magnets M1a, M1b and the magnets M2a, 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. Is done. For example, when the mounting direction is shifted by 90 degrees, the same polarity of the magnets M1a, M1b and the magnets M2a, M2b face 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 on the power feeding point. 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 and the non-contact power receiving unit 20 alone to the side wall 3 and the bottom wall 2 of the bathtub container 1a.

  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 side wall 3 and the bottom wall 2 of the bathtub container 1a, the non-contact power receiving unit is generated 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.

  Thus, since the non-contact power receiving unit 20 of the DC device U is mounted opposite to the non-contact power feeding unit 10 in the side wall 3 of the bathtub container 1a by using magnetic attraction force, mounting of screws, locking means, etc. There is no need to provide a separate means, 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 inner surface of the side wall 3 and the bottom wall 2 of the bathtub container 1a by attaching means such as a hook-and-loop fastener, a suction cup, and the like. You may use together with the attachment means using.

  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 feeding unit 10 is a magnetic field having a predetermined frequency and a predetermined intensity based on a predetermined standard within a predetermined range, and the non-contact power feeding unit 10 is installed in the bathtub container 1a. The position is also determined by a predetermined standard, and when the non-contact power receiving unit 20 is installed on the inner surface of the side wall 3 and the bottom wall 2 of the bathtub container 1a, the relative position (distance, direction) to the non-contact power feeding unit 10 is determined. Etc.) is also 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 incorporated in the several location in the side wall 3 of the bathtub container 1a, and a user is direct-current-directed to an appropriate position according to the direct current | flow apparatus U to be used in combination with the normalization of said each part. The device U can be easily installed, and excellent usability can be obtained.

  Next, in this embodiment, although the some non-contact electric power feeding part 10 is arrange | positioned in the bathtub container 1a, not all the non-contact electric power feeding parts 10 are driven constantly, but the non-contact electric power receiving part 20 faces. A configuration for driving only the arranged non-contact power feeding unit 10 is provided, which will be described below with reference to FIG.

  First, a predetermined number of non-contact power supply units 10 are defined as one block B (in FIG. 5, four non-contact power supply units 10a to 10d constitute block B). Are supplied with DC power from the DC supply line Wdc via the respective 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 of the transistors 32a to 32d to turn on and off the transistors 32a to 32d, and connects the relay coil 312 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. In addition, this drive control part A is arrange | positioned in the bathtub container 1a.

  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.

  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, thereby suppressing unnecessary power consumption. Energy saving.

(Embodiment 2)
Although the bathtub 1 of this embodiment is provided with the structure substantially the same as Embodiment 1, the point which comprised each non-contact electric power feeding part 10 so that the inside of the side wall 3 and the bottom wall 2 of the bathtub container 1a was movable was different. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and description is abbreviate | omitted.

  First, as shown in FIGS. 4A and 4B, the magnets M1a and M1b provided in the non-contact power feeding unit 10 and the magnets M2a and M2b provided in the non-contact power receiving unit 20 are different from each other. The container 1a faces each other via the side wall 3 and the bottom wall 2, and magnetic attraction force is generated between the magnets M1a and M1b and the magnets M2a and M2b, so that the non-contact power receiving unit 20 is connected to the non-contact power feeding unit 10 Mounted opposite.

  As shown in FIG. 7, when the non-contact power receiving unit 20 is moved on the side wall 3 or the bottom wall 2 (in FIG. 7, movement on the side wall 3 is illustrated), the magnet M <b> 1 a of the non-contact power feeding unit 10. , M1b and the magnets M2a and M2b of the non-contact power receiving unit 20 cause the non-contact power feeding unit 10 to be pulled by the non-contact power receiving unit 20 and move on the side wall 3 or the bottom wall 2 in the same direction. The power supply state can be maintained.

  Moreover, if a wheel (not shown) is provided on the back surface of the non-contact power supply unit 10 and the back surface of the non-contact power reception unit 20, the above movement can be easily performed.

  Thus, the user can easily change the feeding point according to the type and usage of the DC device U to be used.

  In the first and second embodiments, the non-contact power feeding system is applied to the DC distribution system in the power distribution system shown in FIG. 8, but the same non-contact power feeding system as that of each embodiment is applied to the AC distribution system (not shown). May be. 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.

It is a figure which shows the external appearance of the bathtub with a non-contact electric power feeding function of Embodiment 1. FIG. It is a figure which shows the side surface cross section of a non-contact electric power feeding system same as the above. It is a figure which shows the structure of the non-contact electric power feeding system same as the above. (A) is a 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 a non-contact electric power receiving part comprises. It is a figure which shows the structure of the drive control part which drives the 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 structure of the non-contact electric power feeding system in the bathtub with a non-contact electric power feeding function of Embodiment 2. FIG. It is a figure which shows the whole structure of a power distribution system.

DESCRIPTION OF SYMBOLS 1 Bathtub with non-contact electric power feeding function 1a Bathtub container 2 Bottom wall 3 Side wall 10 Non-contact electric power feeding part 20 Non-contact electric power receiving part 21 Functional part X Power supply sheet A Drive control part U DC apparatus Wdc DC supply line

Claims (2)

A bathtub container that stores hot water on one side of the bottom wall and the side wall, and a plurality of components that are disposed on the bottom wall or side wall of the bathtub container or on the other side of the bottom wall or side wall of the bathtub container and generate a high-frequency magnetic field. A non-contact power receiving unit that supplies electric power received in a non-contact manner from the non-contact power supply unit to the load using electromagnetic induction by a high-frequency magnetic field generated by the non-contact power supply unit. A bathtub with a non-contact power feeding function disposed at a position facing the non-contact power feeding unit on one side of the bottom wall or side wall,
A detectable period for driving only one of the plurality of non-contact power supply units is generated at regular intervals by sequentially switching the non-contact power supply unit to be driven, and power is received from the non-contact power supply unit being driven in the detectable period. The non-contact power receiving unit receives non-contact power reception by measuring whether the non-contact power receiving unit is disposed opposite to the non-contact power feeding unit based on the measured impedance. Driving object detection means for detecting whether the parts are arranged facing each other;
A driving means for driving only the non-contact power feeding unit disposed so that the non-contact power receiving unit is opposed to the power source ;
The non-contact power receiving unit is attached to and detached from the non-contact power supply unit and the non-contact power reception unit at a position facing the non-contact power supply unit on one side of the bottom wall or side wall of the bathtub container by the attractive force generated between the magnets provided in each Mounting means for free attachment,
When the non-contact power receiving unit is moved on one surface of the bottom wall or side wall of the bathtub container, the non-contact power feeding unit is pulled to the non-contact power receiving unit by the magnetic attraction force, and the inside of the bottom wall or side wall of the bathtub container, Or the other surface side of the bottom wall or side wall of a bathtub container moves to the same direction, The bathtub with a non-contact electric power feeding function characterized by the above-mentioned. The driving unit drives the non-contact power feeding unit arranged with the non-contact power receiving unit facing the rated power based on a detection result of the driving target detection unit, and the non-contact power receiving unit The said non-contact electric power feeding part which is not arrange | positioned is stopped, The bathtub with a non-contact electric power feeding function of Claim 1 characterized by the above-mentioned .

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