JP2009240098A - Power feeding system and power feeding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power feeding system for reducing heat generation quantity and operation cost in the entire power feeding system. <P>SOLUTION: The power feeding system S includes: a first power feeding device P1 and a power feeding device P2 which are connected to loads (L1, L2) respectively, and connected in series and non-contact; a power supply unit PS connected in non-contact to the first power feeding device P1 and supplying power thereto; and a terminus power feeding device PPL connected in non-contact to the second power feeding device P2 and connected to a load L3. In this system S, for example, the first power feeding device P1 includes: a first power receiving head RH1 connected in non-contact to the power supply unit PS and receiving power from the power supply unit PS; a first power receiving circuit R1 for directly feeding the received power to the load L1; a second power feeding circuit T2 electrically unseparably connected to the first power receiving circuit R1; and a second power feeding head TH2 connected in non-contact to the second power feeding device P2 and transmitting the power to the second power feeding device P2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention belongs to the technical field of a power feeding system and a power feeding device. More specifically, the power feeding device is connected in series and in a non-contact manner and supplies power to a corresponding load, and a plurality of power feeding devices are connected in series. Belongs to the technical field of power supply systems connected to each other.

  2. Description of the Related Art Conventionally, research on a power supply system that supplies power in a non-contact manner, such as a charger corresponding to a handset of a home phone, has been actively conducted.

  Here, as background art related to the power supply system, for example, there are those disclosed in Patent Documents 1 and 2 below.

  At this time, the power feeding system disclosed in Patent Document 1 discloses a power feeding system that transmits power in series via a power output terminal-power input terminal connected in a non-contact manner using an electromagnetic induction phenomenon. ing. In the conventional power feeding system including the power feeding system disclosed in Patent Document 1, generally, a dummy load for protecting the power receiving circuit from electrical opening at no load for each subsequent stage of the power receiving circuit per stage. Each resistor is connected.

  This point will be described more specifically with reference to FIG.

  In FIG. 4, the conventional power feeding system SS includes a power supply device PS, a first power feeding device PP1, a second power feeding device PP2, and a termination power feeding device PPL.

  The power supply device PS includes a DC power supply D, a first power feeding circuit T1, and a first power feeding head TH1. Further, the first power feeding device PP1 includes a first power receiving head RH1, a first power receiving circuit R1, a dummy load resistor DL1, a second power feeding circuit T2, and a second power feeding head TH2. A load L1 is connected between the load resistor DL1 and the second power feeding circuit T2. Furthermore, the second power feeding device PP2 includes a second power receiving head RH2, a second power receiving circuit R2, a dummy load resistor DL2, a third power feeding circuit T3, and a third power feeding head TH3. A load L2 is connected between the dummy load resistor DL2 and the third power feeding circuit T3. Finally, the termination power feeding device PPL includes a third power receiving head RH3, a third power receiving circuit R3, and a dummy load resistor DL3, and a load L3 is connected to the dummy load resistor DL3.

  In this configuration, power is supplied from the power supply device PS to the first power feeding device PP1 in a non-contact manner using an electromagnetic induction phenomenon. Similarly, power is supplied in a non-contact manner using the electromagnetic induction phenomenon from the first power feeding device PP1 to the second power feeding device PP2 and from the first power feeding device PP2 to the terminal power feeding device PPL. The Each of the first power supply device PP1, the second power supply device PP2, and the termination power supply device PPL is connected to the power supply device PS, the first power supply device PP1, and the second power supply device PP2, respectively. L1 to L3 are driven.

  Next, the operation in the power supply device PS will be described.

  The DC power supply D in the power supply device PS generates a DC voltage / current having a preset voltage value and current value (hereinafter, the DC voltage / current is simply referred to as DC power) to generate a first power supply circuit T1. Output to. As a result, the first power supply circuit T1 performs a process such as amplification on the DC power supplied from the DC power supply D and supplies it to the first power supply head TH1. The first power feeding head TH1, which is composed of a core (not shown) and a coil wound around the core a predetermined number of times, is not caused by electromagnetic induction between the first power feeding head TH1 in the first power feeding device PP1. Contacted and electrically connected, DC power supplied from the first power feeding circuit T1 is fed to the first power receiving head RH1.

  Next, operations in the first power supply device PP1 and the second power supply device PP2 will be described together. In the following description, the operation of the first power supply device PP1 will be mainly described, and portions related to the operation of the corresponding second power supply device PP2 are indicated by using () in order to avoid duplication of explanation.

  The first power receiving head RH1 (second power receiving head RH2) in the first power feeding device PP1 (second power feeding device PP2) is composed of a core (not shown) and a coil wound around the core a predetermined number of times. The first power supply head TH1 (second power supply head TH2) in the power supply device D (first power supply device PP1) is contactlessly and electrically connected by an electromagnetic dielectric phenomenon. The first power receiving head RH1 (second power receiving head RH2) receives the power supplied from the first power feeding head TH1 (second power feeding head TH2) and outputs it to the first power receiving circuit R1 (second power receiving circuit R2). To do. Accordingly, the first power receiving circuit R1 (second power receiving circuit R2) performs preset rectification processing, amplification processing, and the like on the output electric power, and outputs the dummy load resistance DL1 (dummy load) as DC power. The voltage is supplied to the load L1 (load L2) via the resistor DL2) and output to the second power feeding circuit T2 (third power feeding circuit T3).

  Next, the second power feeding circuit T2 (third power feeding circuit T3) performs processing such as amplification on the DC power supplied from the first power receiving circuit R1 (second power receiving circuit R2), and performs the second power feeding head TH2. (Third feeding head TH3). As a result, the second power feeding head TH2 (third power feeding head TH3) composed of a core (not shown) and a coil wound around the core a predetermined number of times is provided in the second power feeding device PP2 (terminal power feeding device PPL). The second power receiving head RH2 (third power receiving head RH3) is contactlessly and electrically connected by the electromagnetic induction phenomenon, and the DC power supplied from the second power feeding circuit T2 (third power feeding circuit T3) is supplied to the second power receiving head RH2 (third power receiving head RH3). Power is supplied to the power receiving head RH2 (third power receiving head RH3).

  Finally, the operation in the termination power feeding device PPL will be described.

  The third power receiving head RH3 in the terminal power feeding device PPL is composed of a core (not shown) and a coil wound around the core a predetermined number of times, and is connected to the third power feeding head TH3 in the second power feeding device PP2. Between them, they are contactlessly and electrically connected by an electromagnetic dielectric phenomenon. The third power receiving head RH3 receives the power fed from the second power feeding head TH2 and outputs the power to the third power receiving circuit R3. Thus, the third power receiving circuit R3 performs preset rectification processing, amplification processing, and the like on the output electric power, and supplies the electric power as DC power to the load L3 via the dummy load resistor DL3.

In the above configuration and operation, the dummy load resistors DL1 to DL3 provided in the first power supply device PP1, the second power supply device PP2, and the termination power supply device PPL, respectively, should be connected to the loads L1 to L3, respectively. In order to protect the first power receiving circuit R1, the second power receiving circuit R2, and the third power receiving circuit R3 from the case where the load connection terminal is opened unexpectedly, the first power receiving circuit R1, the second power receiving circuit R2, and the third power receiving circuit R2, respectively. A load resistor connected between the power receiving circuit R3 and the loads L1 to L3.
JP 2007-060829 A (for example, FIG. 7 etc.) JP 2005-269857 A

  However, in the configuration of the conventional power supply system described above, since dummy load resistors are provided for each stage, electric power is generated for each dummy load resistor, resulting in an increase in the amount of heat generated in the power supply system as a whole. There was a problem that the operation cost might increase.

  Therefore, the present invention has been made in view of the above problems, and an example of the problem is to configure a power feeding system capable of reducing the amount of heat generation and the operation cost as the whole power feeding system and the power feeding system. It is to provide a power feeding device.

  In order to solve the above-mentioned problem, the invention according to claim 1 includes a plurality of power feeding devices each connected to a corresponding load and connected in series and non-contact to each other, and a first stage. A power supply device connected in a non-contact manner to the power supply device and supplying power to the power supply device in the first stage, and a power supply device connected in a non-contact manner to the power supply device in the final stage A power feeding system including a terminal power feeding device connected to another load, wherein the power feeding device at the Nth (N is a natural number of 2 or more) stage excluding the terminal power feeding device is the N-1th stage power feeding device. A power receiving unit such as a first power receiving head that is connected to the power feeding device in a contactless manner and receives power from the N-1th power feeding device, and directly supplies the received power to the corresponding load. Supply means such as a first power receiving circuit and the supply Processing means such as a second power supply circuit that is electrically inseparably connected to the stage and performs a preset process for outputting the received power to the power supply apparatus of the (N + 1) th stage; Power supply means such as a second power supply head that is connected in a non-contact manner with respect to the N + 1th stage power supply apparatus and outputs the processed power to the N + 1th stage power supply apparatus.

  Therefore, in each of the power supply apparatuses connected in series (excluding the terminal power supply apparatus), the supply means connected to the power receiving means and the load and the processing means connected to the power supply means are electrically inseparable. In each power supply apparatus, at least the processing means can also serve as a dummy load means for protecting the supply means, and a dummy load means for protection is provided at each end of the supply means of each power supply apparatus. There is no need.

  Therefore, the loss due to the dummy load means in each of the power supply devices and the necessity of a space for providing the dummy load means do not occur, so the heat generation amount as a whole of the power supply system can be reduced, the size can be reduced, or the operation cost can be reduced. It is a great place to contribute.

  In order to solve the above-mentioned problem, the invention according to claim 2 is the power supply system according to claim 1, wherein in the power supply apparatus, the supply means and the processing means are fixed in one housing. By being connected to each other, the supply means and the processing means are electrically inseparably connected.

  Therefore, in one power supply apparatus, the supply unit and the processing unit are fixed and connected to each other in one casing, so that the supply unit and the processing unit are electrically inseparably connected. Therefore, the supply means and the processing means can be electrically integrated with each other with a simple configuration.

  In order to solve the above-mentioned problem, the invention according to claim 3 is the power feeding system according to claim 1 or 2, wherein the terminal power feeding device is connected in a non-contact manner to the power feeding device of the previous stage. And a power receiving means such as a third power receiving circuit that receives power from the power supply apparatus of the previous stage, a supply means such as a third power receiving circuit that supplies the received power to the corresponding load, and the corresponding load And dummy load means such as a dummy load resistor connected between the supply means and the supply means.

  That is, the termination power feeding device is not provided with the processing unit and the power feeding unit, unlike the other power feeding devices included in the power feeding system, and instead of the supply in the termination power feeding device. And dummy load means for protecting the power receiving means.

  Therefore, since the dummy load means is connected between the load and the supply means only in the termination power supply apparatus, the supply means and the power reception means can be protected in the termination power supply apparatus that does not have the processing means and the power supply means. it can.

  In addition, since the loss due to the dummy load means can be suppressed to only the loss that occurs in the terminal power supply device, the heat generation amount and the operation cost of the power supply system as a whole can be reduced while ensuring the protection of the power supply system. can do.

  In order to solve the above-mentioned problem, the invention according to claim 4 is the power feeding system according to any one of claims 1 to 3, wherein the power receiving means is the N-1th stage power feeding apparatus. The power supply means is configured to be a coil connected to the (N + 1) -th stage power supply device by an electromagnetic induction phenomenon.

  Therefore, in each of the power supply devices connected in series, the power receiving means and the power supply means are connected by electromagnetic induction, so that they are effective without contact even with loads that are mechanically independent from each other. Can be powered.

  In order to solve the above-mentioned problem, the invention according to claim 5 is the power supply apparatus excluding the terminal power supply apparatus included in the power supply system according to any one of claims 1 to 4, The power receiving means, the supply means, the processing means, and the power supply means.

  Therefore, in each of the power supply apparatuses connected in series (excluding the terminal power supply apparatus), the supply means connected to the power receiving means and the load and the processing means connected to the power supply means are electrically inseparable. In each power supply apparatus, at least the processing means can also serve as a dummy load means for protecting the supply means, and a dummy load means for protection is provided at each end of the supply means of each power supply apparatus. There is no need.

  Therefore, since the loss due to the dummy load means in each of the power supply devices does not occur, it greatly contributes to the reduction of the heat generation amount and the operation cost as the whole power supply system.

  According to the present invention, in each of the power supply apparatuses connected in series (excluding the terminal power supply apparatus), the supply means connected to the power receiving means and the load and the processing means connected to the power supply means are electrically connected. Therefore, the processing means and the power supply means can also serve as a dummy load means for protecting the supply means in each of the power supply devices. There is no need to provide each dummy load means.

  Therefore, since the loss due to the dummy load means in each of the power supply devices does not occur, it greatly contributes to the reduction of the heat generation amount and the operation cost as the whole power supply system.

  Next, the best mode for carrying out the present invention will be described with reference to FIG. In addition, embodiment described below is embodiment at the time of applying this invention with respect to the electric power feeding system by which three electric power feeders are connected in series without contact using an electromagnetic induction phenomenon. .

  FIG. 1 is a block diagram showing a schematic configuration of the power feeding system according to the embodiment. Further, in FIG. 1, the same components as those of the conventional power supply system SS shown in FIG.

  As shown in FIG. 1, the power feeding system S according to the embodiment has a configuration shown in FIG. 1 instead of the first power feeding device PP1 and the second power feeding device PP2 in the conventional power feeding system SS shown in FIG. 4. A first power supply device P1 and a second power supply device P2 are provided. The configurations and operations of the power supply device PS and the termination power supply device PPL other than these are the same as those of the power supply device PS and the termination power supply device PPL in the conventional power supply system SS shown in FIG.

  Next, configurations and operations of the first power supply device P1 and the second power supply device P2 according to the embodiment will be described together. In the following description, the operation of the first power feeding device P1 will be mainly described, and portions related to the operation of the corresponding second power feeding device P2 are indicated by using parentheses () in order to avoid redundant explanation.

  As shown in FIG. 1, in the first power feeding device P1 (second power feeding device P2) according to the embodiment, a first power receiving circuit R1 (second power receiving circuit R2) as a supply unit and a second power feeding circuit as a processing unit. T2 (third power feeding circuit T3) is fixed in one casing C12 (C23). With this configuration, the first power receiving circuit R1 (second power receiving circuit R2) and the second power feeding circuit T2 (second power circuit) 3 power supply circuit T3) is inseparably connected electrically. The loads L1 (L2) are connected between the first power receiving circuit R1 (second power receiving circuit R2) and the second power feeding circuit T2 (third power feeding circuit T3), respectively.

  With this configuration, even if the load L1 (L2) is not connected to the first power receiving circuit R1 (second power receiving circuit R2) for some reason, the second power feeding circuit T2 (third power feeding circuit T3) is always provided. Will be connected. Thus, the second power feeding circuit T2 (third power feeding circuit T3) plays the role of the conventional dummy load resistor DL1 (DL2) (see FIG. 4) with respect to the first power receiving circuit R1 (second power receiving circuit R2). Therefore, the dummy load resistor DL1 (DL2) can be omitted in the configuration of the power supply system S according to the embodiment.

  Next, details of operations in the first power supply device P1 and the second power supply device P2 according to the embodiment will be described together.

  The first power receiving head RH1 (second power receiving head RH2) as the power receiving means in the first power feeding device P1 (second power feeding device P2) is the first power feeding means in the power supply device D (first power feeding device P1). The power feeding head TH1 (second power feeding head TH2) is non-contacted and electrically connected by an electromagnetic dielectric phenomenon. The first power receiving head RH1 (second power receiving head RH2) receives the power supplied from the first power feeding head TH1 (second power feeding head TH2) and outputs it to the first power receiving circuit R1 (second power receiving circuit R2). To do. Thus, the first power receiving circuit R1 (second power receiving circuit R2) directly supplies the direct-current power corresponding to the output power to the load L1 (load L2) and the second power feeding circuit T2 (third To the power feeding circuit T3).

  Next, the second power feeding circuit T2 (third power feeding circuit T3) performs processing such as amplification on the DC power supplied from the first power receiving circuit R1 (second power receiving circuit R2), and performs the second power feeding head TH2. (Third feeding head TH3). As a result, the second power feeding head TH2 (third power feeding head TH3) uses the DC power supplied from the second power feeding circuit T2 (third power feeding circuit T3) to generate the second power receiving head RH2 ( Power is supplied to the third power receiving head RH3).

  In the termination power feeding device PPL, since there is no power feeding circuit that should be electrically connected to the third power receiving circuit R3, the dummy load resistor DL3 as the dummy load means cannot be omitted in the configuration.

  Next, specific circuit configurations according to the first power supply device P1, the second power supply device P2, and the termination power supply device PPL according to the embodiment will be described with reference to FIGS.

  2 is a circuit diagram showing a specific circuit configuration related to the first power supply device P1 and the second power supply device P2, and FIG. 3 is a circuit diagram showing a specific circuit configuration related to the termination power supply device PPL. . Further, since the specific circuit configuration related to the second power supply device P2 is basically the same as the specific circuit configuration related to the first power supply device P1, in FIG. 2, the specific circuit configuration related to the first power supply device P1 is shown. Only the configuration will be described.

  First, a specific circuit configuration according to the first power feeding device P1 will be described with reference to FIG.

  As shown in FIG. 2, the first power receiving head RH1 related to the first power feeding device P1 includes a coil 1 wound around a core (not shown) by a predetermined number (for example, 14 times), an infrared light emitting unit 2 for exchanging digital data, , Is configured.

  On the other hand, the first power receiving circuit R1 fixed in the casing C12 together with the second power feeding circuit T2 and inseparably electrically connected to the second power feeding circuit T2 includes, for example, capacitors 10 to 18, resistors 50 to 55, the shunt regulator 100, and the bridge 101 can be connected as illustrated in FIG.

  On the other hand, the second power feeding head T2 fixed in the casing C12 together with the first power receiving circuit R1 and inseparably electrically connected to the first power receiving circuit R1 includes, for example, capacitors 19 to 31; This can be realized by connecting the resistors 56 to 67, the diode 70, the switching regulator 102, the transistors 103 to 106, and the thyristor 107 as illustrated in FIG.

  Further, the first power supply head TH1 according to the first power supply device P1 is configured by a coil 3 wound around a core (not shown) by a predetermined number (for example, 9 times) and an infrared light receiving unit 4 for exchanging digital data. Yes.

  Finally, a specific circuit configuration related to the termination power feeding device PPL will be described with reference to FIG.

  As shown in FIG. 3, the third power receiving head RH3 related to the terminal power feeding device PPL includes a coil 1 wound around a core (not shown) by a predetermined number (for example, 14 times), an infrared light emitting unit 2 for exchanging digital data, It is comprised by.

  On the other hand, the third power receiving circuit R3 can be basically realized by a circuit configuration similar to that of the first power receiving circuit R1 illustrated in FIG. 2, and includes capacitors 10 to 18, resistors 50 to 55, and the shunt regulator 100. And the bridge 101 can be realized as shown in FIG.

  In addition, the dummy load resistor DL3 related to the termination power feeding device PPL is realized by connecting resistors 80 to 80 in parallel as illustrated in FIG.

  As described above, according to the configuration of the power feeding system S according to the embodiment and the examples, in the first power feeding device P1 and the second power feeding device P2 connected in series, the first power receiving head RH1 (second The first power receiving circuit R1 (second power receiving circuit R2) connected to the power receiving head RH2) and the load L1 (L2), and the second power feeding circuit T2 connected to the second power feeding head TH2 (third power feeding head TH3). (The third power feeding circuit T3) is electrically inseparably connected to the first power feeding device P1 and the second power feeding device P2, and at least the second power feeding circuit T2 (third power feeding circuit T3) is connected to the second power feeding circuit T3. The first power receiving circuit R1 (second power receiving circuit R2) can also serve as a dummy load resistor for protection, and the first power receiving circuit R1 and the second power receiving circuit R2 of the first power feeding device P1 and the second power feeding device P2, respectively. For protection It is not necessary to provide each of the dummy load resistor.

  Therefore, the loss due to the dummy load resistance in each of the first power supply device P1 and the second power supply device P2 and the necessity of a space for providing the dummy load resistance do not occur. This contributes to the reduction of operating costs and the like.

  Further, in the first power feeding device P1 or the second power feeding device P2, the first power receiving circuit R1 (second power receiving circuit R2) and the second power feeding circuit T2 (third power feeding circuit T3) are included in one casing C12 ( C23) is fixed in and connected to each other, so that the first power receiving circuit R1 (second power receiving circuit R2) and the second power feeding circuit T2 (third power feeding circuit T3) are electrically inseparable. Since they are connected, the first power receiving circuit R1 (second power receiving circuit R2) and the second power feeding circuit T2 (third power feeding circuit T3) can be electrically and inseparably connected with a simple configuration.

  Further, since the dummy load resistor DL3 is connected between the load L3 corresponding to the termination power feeding device PPL and the third power reception circuit R3, the third power reception circuit R3 is protected in the termination power feeding device PPL having no power feeding circuit. can do.

  In addition, since the loss due to the dummy load resistance can be suppressed only to the loss that occurs in the terminal power supply device PPL, the heat generation amount and the operation cost of the power supply system S as a whole can be fully protected. Can be realized.

  Furthermore, in the power supply device PS, the first power supply device P1, the second power supply device P2, and the terminal power supply device PPL connected in series, the corresponding power receiving head RH and the power supply head TH are connected to each other by an electromagnetic induction phenomenon. Therefore, for example, power can be effectively supplied in a non-contact manner even to loads that are mechanically independent from each other.

  In the embodiment and examples described above, the first power receiving circuit R1 (second power receiving circuit R2) and the second power feeding circuit T2 (third power feeding circuit T3) are included in one housing C12 (C23). The first power receiving circuit R1 (second power receiving circuit R2) and the second power feeding circuit T2 (third power feeding circuit T3) are electrically and inseparably connected by being fixedly connected to each other. In addition, for example, the first power receiving circuit R1 (second power receiving circuit R2) and the second power feeding circuit T2 (third power feeding circuit T3) are connected by using a connection line that is extremely difficult to cut. You may ensure the electrical integral inseparability between R1 (2nd power receiving circuit R2) and 2nd electric power feeding circuit T2 (3rd electric power feeding circuit T3).

  As described above, the present invention can be used in the field of a power feeding system that supplies power to a load. In particular, a power feeding system that relays power by connecting a plurality of power feeding devices in a contactless manner. When applied to the field, particularly remarkable effects can be obtained.

1 is a block diagram illustrating a schematic configuration of a power feeding system according to an embodiment. 1 is a circuit diagram (I) illustrating a circuit configuration of a power feeding system according to an embodiment. It is a circuit diagram (II) which illustrates the circuit composition of the electric supply system concerning an embodiment. It is a block diagram which shows schematic structure of the electric power feeding system which concerns on a prior art.

Explanation of symbols

1 Coil 2 Infrared light emitter 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 Capacitor 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67 Resistor 70 Diode 100 Shunt regulator 101 Bridge 102 Switching regulator 103, 104, 105, 106 Transistor 107 Thyristor S, SS Feed system PS Power supply device P1, PP1 First feed device P2, PP2 Second feed device PPL Termination feed device D DC power supply T1 First feed circuit T2 Second feed circuit T3 Third feed circuit R1 First power receiving circuit R2 Second power receiving circuit R3 Third power receiving circuit L1, L2, L3 Negative TH1 first feed head TH2 second feeding head TH3 third feeding heads RH1 first power receiving head RH2 second receiving head RH3 third power receiving head DL1, DL2, DL3 dummy load resistor C12, C23 housing

Claims (5)

A plurality of power supply devices each connected to a corresponding load and connected in series and non-contact to each other, and non-contact connected to the first-stage power supply device and the first stage A power supply system comprising: a power supply device that supplies power to the power supply device; and a terminal power supply device that is connected in a non-contact manner to the power supply device at the final stage and connected to another corresponding load.
The Nth (N is a natural number of 2 or greater) stage power supply device excluding the terminal power supply device is
A power receiving means connected in a non-contact manner to the power supply apparatus of the (N-1) th stage and receiving power from the power supply apparatus of the (N-1) th stage;
Supply means for directly supplying the received power to the corresponding load;
Processing means that is inseparably electrically connected to the supply means and performs a preset process for outputting the received power to the N + 1-th power supply device;
Power supply means connected in a non-contact manner to the power supply apparatus of the (N + 1) th stage and outputting the processed power to the power supply apparatus of the (N + 1) th stage;
A power supply system comprising: The power feeding system according to claim 1,
In one of the power supply apparatuses, the supply unit and the processing unit are fixed in a single casing and connected to each other, so that the supply unit and the processing unit are electrically inseparably connected. Power supply system characterized by that. In the electric power feeding system according to claim 1 or 2,
The terminal power feeding device is:
A power receiving means connected in a non-contact manner to the previous power supply device and receiving power from the previous power supply device;
Supply means for supplying the received power to the corresponding load;
Dummy load means connected between the corresponding load and the supply means;
Power supply system characterized by comprising only. In the electric power feeding system as described in any one of Claim 1 to 3,
The power receiving means is a coil connected by electromagnetic induction to the power supply apparatus of the (N-1) th stage,
The power feeding system is characterized in that the power feeding means is a coil connected to the N + 1-th stage power feeding device by an electromagnetic induction phenomenon. The power supply device excluding the terminal power supply device included in the power supply system according to any one of claims 1 to 4,
The power receiving means;
The supply means;
The processing means;
The power supply means;
A power supply apparatus comprising:

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