JP2015019484A - Non-contact power supply system, non-contact power supply device and cooperative management method of non-contact power supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-contact power supply system capable of optionally and inexpensively expanding a power supply region and performing power supply on any position in the power supply region in which power receiving devices are expanded without reducing power supply efficiency, and to provide non-contact power supply devices and a cooperative management method of the non-contact power supply system.SOLUTION: A plurality of power supply devices 1 are connected to the non-contact power supply system by line-type topology. Each power supply device 1 has a power supply circuit 31 and a power supply coil L1 and generates an alternative magnetic field by allowing a high frequency current from the power supply circuit 31 to flow into the power supply coil L1 to perform power supply to a power receiving device. Each power supply device 1 includes first and second information input/output circuits 33, 34. Each power supply device 1 mutually transmits/receives information to/from other power supply devices 1 through the first and second information input/output circuits 33, 34.

Description

  The present invention relates to a contactless power supply system, a contactless power supply apparatus, and a cooperation management method for a contactless power supply system.

  2. Description of the Related Art Conventionally, various non-contact power feeding devices have been proposed in which a power feeding coil is energized with a high-frequency current to feed power to a power receiving coil of a power receiving device provided in an electrical device using an electromagnetic induction phenomenon. In particular, in the non-contact power supply apparatus, a non-contact power supply apparatus that performs charging and power supply by non-contact power supply centering on mobile devices such as mobile phones has been recognized.

  In the non-contact power supply device, a plurality of power supply coils are arranged in a plane, and the opposing power supply coil can be excited to feed the electric device regardless of the position of the electric device (power receiving device). A so-called free layout has been proposed (for example, Patent Document 1).

  In detail, a plurality of power supply coils are provided in one non-contact power supply device, and the power supply coil is appropriately arranged so that the dead center of the magnetic flux is eliminated, thereby expanding the region where the power reception coil of the power reception device can receive the magnetic flux. (That is, the power supply area can be expanded).

  As a result, the power supply area is expanded, so that a plurality of power supply coils are embedded in the floor surface, wall surface, ceiling surface, etc., and non-contact power supply that supplies power to the power receiving device that moves relative to the floor surface, wall surface, ceiling surface, etc. A system is conceivable.

  On the other hand, the power receiving coil of the power receiving device is embedded in the floor surface, wall surface, ceiling surface, etc., the non-contact power feeding device is moved to the floor surface, wall surface, ceiling surface, etc., and a plurality of one coil is attached to the power receiving coil. A non-contact power feeding system that feeds power to the power receiving apparatus by sequentially and continuously passing the power is conceivable.

JP 2011-2111874 A

  However, when the power supply area is expanded such as on the floor, wall surface, ceiling surface, etc., a large number of power supply coils are provided, and a high-performance microcomputer or dedicated LSI is required to control excitation of these large numbers of power supply coils. Therefore, the problem of high cost occurs.

  Further, the number of power supply coils laid on the floor surface, wall surface, ceiling surface, and the like varies depending on the size of the floor surface, wall surface, ceiling surface, and the like. Therefore, there has been a problem that a non-contact power feeding device in which the number of power feeding coils is changed must be designed for each size.

  The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a non-contact power feeding system, a non-contact power feeding apparatus, and a non-contact power feeding system linkage management method that can freely and inexpensively expand a power feeding area. It is to provide. In addition, the present invention provides a non-contact power feeding system, a non-contact power feeding device, and a non-contact power feeding system linkage management method capable of feeding power without reducing power feeding efficiency regardless of the position of the power feeding device in the expanded power feeding area. It is in.

  In order to solve the above problems, a non-contact power feeding system of the present invention is provided in a power receiving device that generates a power source necessary for an electric device by causing a high-frequency current from a power feeding circuit to flow through a power feeding coil to generate an alternating magnetic field. A non-contact power feeding system in which a plurality of non-contact power feeding devices that supply power by generating secondary power using electromagnetic induction with respect to a power receiving coil are arranged, and each of the non-contact power feeding devices inputs and outputs information A circuit is provided, wherein each of the non-contact power feeding devices exchanges information with another power feeding device via the information input / output circuit.

The said structure WHEREIN: It is preferable that the said information is an apparatus detection result when the presence or absence of the said power receiving apparatus facing the said power supply coil provided in each said non-contact electric power supply is detected.
In the above-described configuration, the information is output from any one of the non-contact power feeding devices among the non-contact power feeding devices, and a synchronization signal for synchronizing the high-frequency current that the other non-contact power feeding device passes through the power feeding coil When the other non-contact power supply device generates a high-frequency current, it is preferable that a high-frequency current synchronized with the high-frequency current of the non-contact power supply device that outputs the synchronization signal is generated based on the synchronization signal.

  In order to solve the above-described problems, a non-contact power feeding device according to the present invention generates a high-frequency current by feeding a feeding coil, a feeding circuit that allows a high-frequency current to flow through the feeding coil, and driving the feeding circuit by outputting a driving signal. And a system control circuit that controls a drive signal generated by the signal generation circuit, and generates an alternating magnetic field by causing the high-frequency current to flow through the power supply coil to generate a power source necessary for the electrical device. A non-contact power feeding device that feeds power by generating secondary power using electromagnetic induction to a power receiving coil provided in the power receiving device, and inputs information to and from other non-contact power feeding devices. An information input / output circuit to output, and a system linkage that outputs information input by the information input / output circuit to the system control circuit and outputs information from the system control circuit to the information input / output circuit Characterized by comprising the road.

  In the above configuration, the system control circuit outputs a reference clock signal for generating the drive signal for setting the frequency of the high-frequency current, and outputs an enable signal. It is preferable to generate a drive signal that counts a reference clock signal and inverts it based on a reference count value, and outputs the drive signal to the power supply circuit based on the enable signal.

  In the above configuration, it is preferable that the system control circuit detects the presence or absence of the power receiving device facing the power supply coil and outputs the enable signal based on the device detection result to the signal generation circuit.

  In the above configuration, a plurality of the power supply coils are provided, the power supply circuit is provided for each power supply coil, and the signal generation circuit, the system control circuit, and the system linkage circuit are all included in the power supply. One is preferably provided for each coil, and a common drive signal is generated for each of the power feeding circuits.

The said structure WHEREIN: It is preferable that the said information input / output circuit is provided with two or more with respect to the said system cooperation circuit.
In the above configuration, the synchronization signal from the other contactless power supply device and the drive signal from the signal generation circuit are input, and the signal generation circuit replaces the reference count value set to generate the drive signal. It is preferable to provide a power feeding synchronization circuit that obtains a correction count value that is synchronized with a drive signal of another non-contact power feeding device and outputs the correction count value to the signal generation circuit.

  In the above-described configuration, the system cooperation circuit is configured so that the system control circuit performs other non-contact power supply based on information on the device detection result from the system control circuit and information on a device detection result from another non-contact power supply device. A reference mode or a subordinate mode is set for the system control circuit of the apparatus, and the system control circuit sets the drive signal to be inverted based on the reference count value in the signal generation circuit when the reference mode is set. And generating the synchronization signal to another non-contact power feeding device via a system cooperation circuit and an information input / output circuit, and when the system control circuit is set to a subordinate mode, the power generation in the signal generation circuit It is preferable to generate the drive signal that is inverted based on the correction count value obtained by the synchronization circuit.

  In the above configuration, the system control circuit set to the reference mode or the subordinate mode outputs the enable signal that causes the power supply circuit of the power supply coil detecting the power reception device to output the drive signal, and the power reception It is preferable that the enable signal not to output the drive signal is output to a power supply circuit of a power supply coil that has not detected the device.

  In the above-described configuration, the system linkage circuit is configured so that each feeding coil of its own non-contact power feeding device is based on information on the device detection result from the system control circuit and information on a device detection result from another non-contact power feeding device. Does not detect the power receiving device, and when the most adjacent power supply coil of another non-contact power feeding device does not detect the power receiving device, the system control circuit is set to the sleep mode and the system control is set to the sleep mode. The circuit counts the reference clock signal with respect to the signal generation circuit, generates a detection drive signal that is inverted based on a predetermined detection count value, and detects the drive signal for detection based on the enable signal Is preferably intermittently output to the power feeding circuit.

  In the above configuration, the signal generation circuit receives a synchronization signal from the other contactless power supply device, resets a count value counted by the signal generation circuit, newly counts the reference clock signal, and generates a reference count value It is preferable to generate the drive signal that is inverted based on the above.

  In the above-described configuration, the system cooperation circuit is configured so that the system control circuit performs other non-contact power supply based on information on the device detection result from the system control circuit and information on a device detection result from another non-contact power supply device. A reference mode or a subordinate mode is set for the system control circuit of the apparatus, and the system control circuit sets the drive signal to be inverted based on the reference count value in the signal generation circuit when the reference mode is set. And the drive signal is output to another non-contact power feeding device via the system cooperation circuit and the information input / output circuit, and when the system control circuit is set to the subordinate mode, the signal generation circuit of its own Instead of the drive signal to be generated, the drive signal for outputting to the own power supply circuit from the non-contact power supply device that has become another reference mode, It is preferable to enter through the 携回 path and the information input and output circuits.

  In the above configuration, the system control circuit set to the reference mode or the subordinate mode outputs the enable signal that causes the power supply circuit of the power supply coil detecting the power reception device to output the drive signal, and the power reception It is preferable that the enable signal not to output the drive signal is output to a power supply circuit of a power supply coil that has not detected the device.

  In the above-described configuration, the system linkage circuit is configured so that each feeding coil of its own non-contact power feeding device is based on information on the device detection result from the system control circuit and information on a device detection result from another non-contact power feeding device. Does not detect the power receiving device, and when the most adjacent power supply coil of another non-contact power feeding device does not detect the power receiving device, the system control circuit is set to the sleep mode and the system control is set to the sleep mode. The circuit counts the reference clock signal with respect to the signal generation circuit, generates a detection drive signal that is inverted based on a predetermined detection count value, and detects the drive signal for detection based on the enable signal Is preferably intermittently output to the power feeding circuit.

  In the above configuration, a drive signal switching circuit is provided between the signal generation circuit and the plurality of power feeding circuits, and the drive signal switching circuit is a driving signal between the driving signal switching circuit similarly provided in another power feeding device. The system cooperation circuit is connected to the system control circuit based on the information on the device detection result from the system control circuit and the information on the device detection result from another non-contact power feeding device. Sets the reference mode or the subordinate mode for the system control circuit of another contactless power supply device, and the system control circuit is set based on the reference count value in the signal generation circuit when set to the reference mode. The drive signal to be inverted is generated, the drive signal is output to its own power supply circuit via its own drive signal switching circuit, and the drive signal switching circuit of another non-contact power supply device is generated. When the system control circuit is set to the subordinate mode, the system control circuit replaces the drive signal generated by the signal generation circuit of the system control circuit with the contactless power supply apparatus that is in another reference mode. It is preferable that a drive signal for output is input via its own drive signal switching circuit and output to its own power supply circuit.

  In the above configuration, the system control circuit stores, as delay information, a delay time until the drive signal of the system control circuit is input to the drive signal switching circuit of another adjacent non-contact power feeding device. When the system control circuit of another adjacent non-contact power feeding device is set to the subordinate mode, the drive signal switching circuit in the reference mode is configured to transfer the drive signal generated by the signal generation circuit to the other adjacent Immediately output to the drive signal switching circuit in the dependent mode, and output to the own power supply circuit after delaying the delay time of the delay information with respect to the own power supply circuit, and when the system control circuit is set to the dependent mode, When the drive signal from the drive signal switching circuit of the non-contact power feeding device that has become another reference mode is input, It is preferable to immediately output to.

  In the above configuration, the system control circuit outputs the drive signal generated by its own signal generation circuit to the drive signal switching circuit of another adjacent non-contact power feeding device via its drive signal switching circuit and outputs the drive signal It is preferable that the drive signal is input after being looped back, the delay time of the looped back drive signal is counted by the reference clock signal, and delay information is generated based on the counted delay time.

  In the above configuration, the system control circuit stores phase designation information for changing the phase of the drive signal output to its own power supply circuit based on the drive signal from the non-contact power supply device in the reference mode. Is preferred.

  In the above configuration, a plurality of the power supply coils are provided, and the power supply circuit, the signal generation circuit, the system control circuit, and the system linkage circuit are provided for each of the power supply coils, The drive signals to be generated are respectively controlled with respect to the corresponding signal generation circuits, and the system linkage circuits are preferably connected so as to be able to exchange information with each other.

  In the above configuration, it is preferable that a plurality of the information input / output circuits are provided, and the plurality of information input / output circuits are connected to at least one of the plurality of system linkage circuits.

  In the above configuration, the synchronization signal from the other contactless power supply device and the drive signal from the signal generation circuit are input, and the signal generation circuit replaces the reference count value set to generate the drive signal. It is preferable to provide a power feeding synchronization circuit that obtains a correction count value that is synchronized with a drive signal of another non-contact power feeding device and outputs the correction count value to the signal generation circuit.

  In the above configuration, the system cooperation circuit includes information on the device detection result from the corresponding system control circuit, information on the device detection result from another system cooperation circuit, and device detection from another non-contact power feeding device. Based on the result information, the corresponding system control circuit sets the reference mode or the subordinate mode for all other system control circuits, and when the system control circuit is set to the reference mode, the signal The generation circuit generates the drive signal to be inverted based on the reference count value, and outputs the synchronization signal to all other system cooperation circuits.When the system control circuit is set to the subordinate mode, Preferably, the signal generation circuit generates the drive signal that is inverted based on the correction count value obtained by the power feeding synchronization circuit. There.

  In the above configuration, it is preferable that the system control circuit set to the reference mode or the subordinate mode outputs the enable signal that causes the power supply circuit of each corresponding power supply coil to output the drive signal.

  In the above configuration, the system linkage circuit has its power supply coil detecting the power receiving device based on the information on the device detection result from the system control circuit and the information on the device detection result from another system control circuit. When the power supply coils on both sides do not detect the power receiving device, the system control circuit is set to the sleep mode, and the system control circuit set to the sleep mode sends the reference clock signal to the signal generation circuit. A detection drive signal that counts and reverses based on a predetermined detection count value is generated, and the detection drive signal is intermittently output to the power supply circuit based on the enable signal. preferable.

  In the above configuration, the system linkage circuit has its power supply coil detecting the power receiving device based on the information on the device detection result from the system control circuit and the information on the device detection result from another system control circuit. And when at least one of the power supply coils detects the power receiving device, the system control circuit is set to the standby mode, and the system control circuit set to the standby mode has the reference clock for the signal generation circuit. It is preferable to generate a drive signal that counts a signal and inverts the signal based on the correction count value, and outputs the enable signal that does not output the drive signal to the power feeding circuit.

  In the above configuration, the signal generation circuit receives the synchronization signal from the other, resets the count value counted by the signal generation circuit, newly counts the reference clock signal, and inverts based on the reference count value Preferably, the driving signal is generated.

  In the above configuration, the system cooperation circuit includes information on the device detection result from the corresponding system control circuit, information on the device detection result from another system cooperation circuit, and device detection from another non-contact power feeding device. Based on the result information, the corresponding system control circuit sets the reference mode or the subordinate mode for all other system control circuits, and when the system control circuit is set to the reference mode, the signal The generation circuit generates the drive signal to be inverted based on the reference count value, and outputs the drive signal to all other system cooperation circuits. When the system control circuit is set to the subordinate mode, Instead of the drive signal generated by the signal generation circuit, the system control circuit in another reference mode outputs it to its own power supply circuit. A drive signal for, it is preferable to enter via a system linkage circuit.

  In the above configuration, it is preferable that the system control circuit set to the reference mode or the subordinate mode outputs the enable signal that causes the power supply circuit of each corresponding power supply coil to output the drive signal.

  In the above configuration, the system linkage circuit has its power supply coil detecting the power receiving device based on the information on the device detection result from the system control circuit and the information on the device detection result from another system control circuit. When the power supply coils on both sides do not detect the power receiving device, the system control circuit is set to the sleep mode, and the system control circuit set to the sleep mode sends the reference clock signal to the signal generation circuit. A detection drive signal that counts and reverses based on a predetermined detection count value is generated, and the detection drive signal is intermittently output to the power supply circuit based on the enable signal. preferable.

  In the above configuration, the system linkage circuit has its power supply coil detecting the power receiving device based on the information on the device detection result from the system control circuit and the information on the device detection result from another system control circuit. In addition, when at least one of the power supply coils detects the power receiving device, the system control circuit is set to the standby mode, and the system control circuit set to the standby mode is driven by the signal generation circuit of its own. In place of the signal, it is preferable that the drive signal is input from the system control circuit that is in another reference mode, and the enable signal that does not output the drive signal to the power feeding circuit is output.

  In the above configuration, the information input / output circuit is connected to the first and second external connection terminals between the information input / output circuit and the first and second external connection terminals connected to the information input / output circuit. It is preferable to provide an input / output switching circuit for switching the connections.

  In order to solve the above-described problem, the cooperative management method for a non-contact power feeding system according to the present invention is a power receiving device that generates a power source necessary for an electrical device by causing a high-frequency current from a power feeding circuit to flow through a power feeding coil to generate an alternating magnetic field. A method of managing a non-contact power feeding system in which a plurality of non-contact power feeding devices that perform power feeding by generating secondary power using electromagnetic induction with respect to a power receiving coil provided on the power receiving coil, An information input / output circuit is provided in the contact power supply device, the contactless power supply devices are connected in a line topology via the information input / output circuit, and each power supply device 1 connected in the line topology is connected to the contact power supply device. A management apparatus is connected, and each power supply apparatus is managed by the management apparatus.

  In the above configuration, the management device is preferably connected to each power supply device 1 connected in the line type topology so as to have a line type topology, and manages each power supply device.

  According to the present invention, the power supply area can be freely expanded at low cost.

The system block diagram of the non-contact electric power feeding system of 1st Embodiment. (A) is a whole perspective view of a non-contact electric power feeder, (b) is a whole perspective view of a power receiving apparatus when a power receiving surface is directed upward. The figure which shows the place which installs a non-contact electric power feeding system. The electric block circuit diagram which shows the electric constitution of a non-contact electric power feeder. The electric circuit diagram of a feed circuit. The electric block circuit diagram of the gate circuit provided in the electric power feeding signal generation circuit. The electric block circuit diagram of a power receiving apparatus. The wave form diagram of an upper side and a lower side drive signal. The wave form diagram which shows the relationship between an enable signal and an upper side and a lower side drive signal. The wave form diagram when the frequency of the upper side and lower side drive signal produced | generated by the other electric power feeder is lower than the frequency of the upper side and lower side drive signal of one electric power feeder. The wave form diagram in case the frequency of the upper side and lower side drive signal produced | generated by the other electric power feeder is higher than the frequency of the upper side and lower side drive signal of one electric power feeder. The wave form diagram explaining how to obtain the correction count value when the upper and lower drive signals of the power supply apparatus in the master mode are higher than the frequencies of the upper and lower drive signals of the power supply apparatus in the slave mode. The wave form diagram explaining how to obtain the correction count value when the upper and lower drive signals of the power supply apparatus in the master mode are lower than the frequencies of the upper and lower drive signals of the power supply apparatus in the slave mode. (A) (b) (c) is explanatory drawing explaining the effect | action of a non-contact electric power feeding system. (A) (b) (c) is explanatory drawing explaining the effect | action of a non-contact electric power feeding system. Explanatory drawing explaining the cooperation management method of a non-contact electric power feeding system. The electric block circuit diagram of the non-contact electric power feeder of 2nd Embodiment. (A) (b) (c) is explanatory drawing explaining the effect | action of a non-contact electric power feeding system. (A) (b) (c) is explanatory drawing explaining the effect | action of a non-contact electric power feeding system. The electric block circuit diagram which shows another example of a non-contact electric power feeder. The wave form diagram explaining another example of the production | generation method of the upper side and lower side drive signal in the electric power feeder of a slave mode. The electric block circuit diagram which shows another example of a non-contact electric power feeder. The electric block circuit diagram which shows another example of a non-contact electric power feeder. The electric block circuit diagram which shows another example of a non-contact electric power feeder. The electric circuit diagram for demonstrating an input / output switching circuit similarly. The arrangement | positioning figure which shows another example of arrangement | positioning of a non-contact electric power feeder. The arrangement | positioning figure which shows another example of arrangement | positioning of a non-contact electric power feeder. The arrangement | positioning figure which shows another example of arrangement | positioning of a non-contact electric power feeder.

(First embodiment)
Hereinafter, 1st Embodiment of a non-contact electric power feeding system is described according to drawing.
FIG. 1 is a system configuration diagram showing a configuration of a non-contact power supply system S, in which a plurality of non-contact power supply devices (hereinafter referred to as power supply devices) 1 are arranged in a line in the longitudinal direction. A power receiving device 2 that receives non-contact power feeding from the power feeding devices 1 is arranged on the upper side of the plurality of power feeding devices 1 arranged in a row so as to be movable in the row direction of the power feeding devices 1. The power receiving device 2 moves and can receive non-contact power feeding from the power feeding device 1 facing at the moving position.

  As shown in FIG. 1, each power supply device 1 has a long rectangular parallelepiped housing 11, and its upper surface is a power supply surface 12. The power supply surface 12 is divided into a plurality of rectangular power supply areas AR1, and in the present embodiment, six power supply areas AR1 are formed in the longitudinal direction.

  As shown in FIG. 2 (a), each power supply apparatus 1 is located in the housing 11 at a position corresponding to the six power supply areas AR1 that are defined in accordance with the outer shape of the power supply area AR1. A feeding coil L1 wound in a square shape is arranged. That is, in the case 11, six power supply coils L1 are arranged in a line along the longitudinal direction. The six power supply coils L1 are arranged such that their coil surfaces are opposite to and parallel to the power supply surface 12.

Therefore, since the plurality of power supply devices 1 are arranged in a line, the power supply coils L1 of each power supply device 1 are arranged in a line in the longitudinal direction.
Each feeding coil L1 of each feeding device 1 is connected to each feeding circuit 31 (see FIG. 4) provided in each housing 11. Each feeding coil L1 radiates an alternating magnetic field when a high-frequency current is passed through the corresponding feeding circuit 31.

Accordingly, the power feeding surfaces 12 of the power feeding devices 1 arranged in a row are continuously connected in a row in the longitudinal direction, and the entire region of the power feeding surfaces 12 extending in the connected longitudinal direction becomes the power feeding surface. .
Note that the six power supply coils L <b> 1 of each power supply device 1 are mounted on circuit boards provided in the respective housings 11.

  Moreover, as shown to Fig.2 (a), it is the housing | casing 11 of each electric power feeder, Comprising: The connector connection port 13 is formed in the both sides | surfaces of the longitudinal direction. The connector connection ports 13 formed on both side surfaces are formed at symmetrical positions, and when the respective power supply devices 1 are arranged, the intermediate connector (not shown) is opposed to the connector connection ports 13 of the adjacent power supply devices 1. It is inserted into the connection port 13 and is electrically connected. The adjacent two power supply apparatuses 1 can exchange each other's information signal D (see FIG. 4) via the intermediate connector. That is, each power supply apparatus 1 is connected by a so-called line type topology.

  As illustrated in FIG. 2B, the power receiving device 2 includes a flat rectangular cubic housing 21, and a lower surface (upper side in the drawing) is a power receiving surface 22. The power receiving surface 22 is formed along the power feeding surface 12 of the power feeding apparatus 1 in which one rectangular power receiving area AR2 extends in the longitudinal direction. In the present embodiment, the power reception surface 22 of the power reception device 2 is formed in a size in which six power supply areas AR1 of the power supply device 1 are arranged in the longitudinal direction.

  As illustrated in FIG. 1, the power receiving device 2 includes a power receiving coil L2 wound in a rectangular shape in accordance with the outer shape of the power receiving area AR2 in a position corresponding to the power receiving area AR2 in the housing 21. Has been placed. That is, one receiving coil L2 is disposed in the casing 21 along the longitudinal direction. One power receiving coil L2 is arranged so that its coil surface is opposite to and parallel to the power receiving surface 22, and receives secondary power that is linked to an alternating magnetic field radiated from the power feeding coil L1 of the power feeding device 1. Occur.

  As a result, the power receiving device 2 can receive power from the opposing power feeding device 1 regardless of the position of the power feeding surface 12 enlarged by the plurality of power feeding devices 1 arranged in a line.

The non-contact power feeding system S composed of the plurality of power feeding devices 1 can be installed in each place of a room, for example.
For example, as shown in FIG. 3, a baseboard 7 is formed along the horizontal direction below the wall 6 of the room 5. A housing recess is provided in the longitudinal direction on the upper surface of the skirting board 7, and a plurality of power feeding devices 1 are housed in the housing recess in the longitudinal direction. Then, the power receiving device 2 is slid in the longitudinal direction on the power feeding surface 12 of each power feeding device 1 accommodated in a line in the longitudinal direction. As a result, the power receiving device 2 can receive power from the opposing power feeding device 1 regardless of the position of the skirting board 7.

  Then, if the electric device E (notebook computer in FIG. 3) is placed on the upper surface of the casing 21 of the power receiving device 2, the electric device E can receive drive power from the power receiving device 2. That is, the electric device E can be driven by receiving the driving power at any position on the skirting board 7.

(Reciprocal relationship of each power supply device 1)
The plurality of power supply devices 1 connected in a line topology are in any one of a master mode, a slave mode, and a sleep mode in relation to the power receiving device 2.

(Master mode)
In the master mode, when the power feeding device 1 feeds the power receiving device 2 alone and when the power feeding device 2 is fed in cooperation with other power feeding devices 1, the power feeding device 1 becomes the main (reference). This is a mode (reference mode) executed when the power receiving device 2 is fed.

  Here, the master mode may be a state in which all of the power supply coils L1 of the power supply apparatus 1 in the master mode do not need to supply power to the power reception apparatus 2, and only a part of the power supply coil L1 is supplying power. That is, it is not necessary for all six feeding coils L1 to pass a high-frequency current having a feeding frequency.

  Then, the power supply device 1 in the master mode is set to one of the excitation mode and the standby mode in the six power supply coils L1 belonging to the power supply device 1.

The excitation mode is a mode in which the feeding coil L1 is energized with a high-frequency current having a feeding frequency.
The standby mode is a mode in which the feeding coil L1 is not energized with a high-frequency current having a feeding frequency. Specifically, a mode in which signals for generating a high-frequency current having a power supply frequency (upper and lower drive signals PSa and PSb) are already generated in the power supply coil L1, but a high-frequency current having a power supply frequency is not generated. It is.

(Slave mode)
In the slave mode, when the power feeding device 1 cooperates with another power feeding device 1 to feed the power receiving device 2, the power feeding device 1 is subordinate to the power feeding device 1 in another master mode. 2 is a mode (dependent mode) executed when power is supplied to 2.

  Here, the slave mode does not have to supply power to the power receiving device 2 from all the power supply coils L1 of the power supply device 1 in the slave mode, and may be in a state where only a part is supplying power. That is, it is not necessary that all six feeding coils L1 are energized with a high-frequency current having a feeding frequency.

  Then, the power supply device 1 in the slave mode has one of the excitation mode and the standby mode in the six power supply coils L1 belonging to the power supply device 1 in the same manner as the power supply coil L1 of the power supply device 1 in the master mode. Mode is set.

(sleep mode)
The sleep mode is a mode executed by the power supply apparatus 1 when the power supply apparatus 1 is not supplying power to the power reception apparatus 2 and the adjacent power supply apparatus 1 is not supplying power to the power reception apparatus 2.

  More specifically, the sleep mode is a mode in which a signal for generating a high-frequency current having a power feeding frequency output to the power feeding coil L1 is not generated. Then, instead of the power supply frequency, the power supply coil L1 is energized with a high-frequency current having a detection frequency.

  In the sleep mode, when the adjacent power feeding device 1 and the power feeding coil L1 closest to the power feeding device 1 in the sleep mode is in the excitation mode, all the power feeding coils L1 of the power feeding device 1 in the sleep mode are turned on. It becomes standby mode.

Next, the electrical configuration of the non-contact power feeding system S configured as described above will be described.
(Power supply device 1)
First, a plurality of power feeding apparatuses 1 arranged in a line will be described.

  As shown in FIG. 4, each power feeding device 1 is connected via an intermediate connector inserted into a connector connection port 13 provided on both side surfaces. Each power supply device 1 transmits its own information to the other power supply devices 1 through the intermediate connector and acquires information from the other power supply devices 1 through the intermediate connector. .

Here, since each power supply apparatus 1 has the same circuit configuration, one power supply apparatus 1 will be described for convenience of description, and the other power supply apparatuses 1 will be omitted for convenience of description.
As shown in FIG. 4, the power supply apparatus 1 includes six power supply circuits 31, first and second information input / output circuits 33 and 34, a system linkage circuit 35, a system control circuit 40, a power supply signal generation circuit 41, and a power supply. A synchronization circuit 42 is provided.

(Feeding circuit 31)
The six power supply circuits 31 are provided corresponding to the six power supply coils L1, and generate and pass high-frequency currents to the corresponding power supply coils L1.

  As shown in FIG. 5, the power feeding circuit 31 is a known half-bridge circuit that uses a DC voltage Vdd as a drive source. The power feeding circuit 31 includes a voltage dividing circuit in which a first capacitor Ca and a second capacitor Cb are connected in series, and a series circuit in which a first power transistor Qa and a second power transistor Qb are connected in series to the voltage dividing circuit. Are connected in parallel. In the present embodiment, the first and second power transistors Qa and Qb are configured by N-channel MOSFETs.

  The feeding coil L1 and the resonance coil are connected between a connection point (node N1) between the first capacitor Ca and the second capacitor Cb and a connection point (node N2) between the first power transistor Qa and the second power transistor Qb. A series circuit of a resonant capacitor Cx1 is connected.

  As shown in FIG. 8, the upper drive signal PSa is input from the power supply signal generation circuit 41 to the gate terminal of the first power transistor Qa. Further, the lower drive signal PSb is input from the power supply signal generation circuit 41 to the gate terminal of the second power transistor Qb.

  The first and second power transistors Qa and Qb are alternately turned on / off based on the upper and lower drive signals PSa and PSb input to the gate terminals, respectively. As a result, a high-frequency current that energizes the feeding coil L1 is generated. The power feeding coil L1 generates an alternating magnetic field when this high frequency current is applied.

(First and second information input / output circuits 33 and 34)
The first information input / output circuit 33 is connected to the adjacent right power supply apparatus 1, and exchanges information between the power supply apparatus 1 (system cooperation circuit 35) and the adjacent right power supply apparatus 1. The second information input / output circuit 34 is connected to the adjacent left power supply apparatus 1, and exchanges information between the power supply apparatus 1 (system cooperation circuit 35) and the adjacent left power supply apparatus 1.

  Then, the first and second information input / output circuits 33 and 34 output the information of the power supply device 1 to all the other power supply devices 1, and conversely, the information of all other power supply devices 1 Input to the power feeding device 1.

The first information input / output circuit 33 includes a first information reception circuit 33a, a first information transmission circuit 33b, a first information storage circuit 33c, and a first noise removal circuit 33d.
The second information input / output circuit 34 includes a second information reception circuit 34a, a second information transmission circuit 34b, a second information storage circuit 34c, and a second noise removal circuit 34d.

(First and second information receiving circuits 33a and 34a)
The first information receiving circuit 33a inputs the information signal D of each power supply device 1 on the right side from the adjacent right power supply device 1 via the first noise removal circuit 33d, and the information signal D is input to the system cooperation circuit 35. Output. Further, the first information receiving circuit 33 a stores the input information signal D of each right-side power feeding apparatus 1 in the first information storage circuit 33 c so that the information signal D is read by the system cooperation circuit 35. It has become.

  Further, the second information receiving circuit 34a inputs the information signal D of each power supply apparatus 1 on the left side from the adjacent left power supply apparatus 1 via the second noise removal circuit 34d, and the information signal D is a system cooperation circuit. 35. Further, the second information receiving circuit 34 a stores the input information signal D of each left power supply device 1 in the second information storage circuit 34 c so that the information cooperation signal 35 is read out by the system cooperation circuit 35. It has become.

  The information signal D of each power supply device 1 is an information signal such as data of device detection results of each of the six power supply coils L1 of the power supply device 1 and mode data of the power supply device 1. Then, identification information (address information) for identifying the power supply apparatus 1 is added to the information signal D of each power supply apparatus 1.

(First and second information transmission circuits 33b and 34b)
The first information transmission circuit 33b inputs the information signal D of each left power supply apparatus 1 input from the second information reception circuit 34a from the system cooperation circuit 35, and transmits the information signal D to the adjacent power supply apparatus 1 on the right side. To do.

  On the other hand, the second information transmission circuit 34b inputs the information signal D of each power supply device 1 on the right side input from the first information reception circuit 33a from the system cooperation circuit 35, and inputs the information signal D to the adjacent power supply device 1 on the left side. Send to.

  Further, the first and second information transmission circuits 33b and 34b receive the device detection result data of their own six feeding coils L1 from the system control circuit 40 via the system cooperation circuit 35 and the mode of the system cooperation circuit 35. Mode data indicating the state is input as an information signal D.

  At this time, the system cooperation circuit 35 adds the identification information (address information) for identifying the power supply device 1 to the information signal D composed of the data of the device detection result and the mode data, and transmits the first and second information. Output to circuits 33b and 34b.

  Then, the first information transmission circuit 33b transmits the information signal D of its own power supply apparatus 1 input from the system cooperation circuit 35 to the adjacent right power supply apparatus 1. Similarly, the second information transmission circuit 34b transmits the information signal D of its own power supply apparatus 1 input from the system cooperation circuit 35 to the adjacent left power supply apparatus 1.

(First and second information storage circuits 33c and 34c)
The first information storage circuit 33c temporarily stores the contents of the information signal D of the respective power supply devices 1 on the right side received by the first information reception circuit 33a. Similarly, the second information storage circuit 34c temporarily stores the contents of the information signal D of the respective power supply devices 1 on the left side received by the second information reception circuit 34a.

(System linkage circuit 35)
The system linkage circuit 35 inputs the data of the device detection results of the six feeding coils L1 provided in its own feeding device 1 from the system control circuit 40, and passes through the first and second information input / output circuits 33 and 34. Output to another power supply device 1. The system cooperation circuit 35 outputs the device detection result data with identification information (address information) for identifying its own power supply device 1 added thereto.

On the other hand, the system cooperation circuit 35 inputs data of device detection results of the six power supply coils L1 of the other power supply apparatuses 1 via the first and second information input / output circuits 33 and 34.
The system linkage circuit 35 compares the device detection result data of its own power supply device 1 with the device detection result data of the six power supply coils L1 of the other power supply devices 1. Then, the system cooperation circuit 35 sets the system control circuit 40 to any one of the master mode, the slave mode, and the sleep mode. At this time, the system linkage circuit 35 also sets the system control circuit 40 to either the excitation mode or the standby mode.

(sleep mode)
The system cooperation circuit 35 places the system control circuit 40 in the sleep mode in the following cases.

When the power supply apparatus 1 and the adjacent power supply apparatus 1 do not detect the power reception apparatus 2, the system linkage circuit 35 of the power supply apparatus 1 sets the system control circuit 40 to the sleep mode.
Here, the power feeding device 1 that is adjacent to the power feeding device 1 that is adjacent to the power feeding device 1 that is adjacent to the power feeding device 1 may be in a state in which the power receiving device 2 is not detected. However, in a state where the power supply coil L1 closest to the power supply device 1 detects the power reception device 2, the system control circuit 40 is set to the standby mode.

(Master mode)
The system cooperation circuit 35 sets the system control circuit 40 to the master mode in the following two cases.

  (1) When only the power supply device 1 of itself detects the power receiving device 2, the system linkage circuit 35 sets the system control circuit 40 to the master mode. Here, the power supply device 1 itself may be in a state where at least one power supply coil L1 of the six power supply coils L1 is detecting the power reception device 2.

  (2) When the own power supply device 1 is detecting the power reception device 2 and the other power supply devices 1 located on the right side of the own power supply device 1 are also detecting the power reception device 2, the system cooperation The circuit 35 sets the system control circuit 40 to the master mode.

Here, the power supply device 1 itself may be in a state where at least one power supply coil L1 of the six power supply coils L1 is detecting the power reception device 2.
The other power supply device 1 may be in a state where at least one power supply coil L1 of the six power supply coils L1 detects the power reception device 2.

  In addition, when the system control circuit 40 is set to the master mode, the system linkage circuit 35 outputs a power feeding synchronization signal SYC that is a falling signal of the upper and lower drive signals PSa and PSb generated by the power feeding signal generation circuit 41. To do. Then, the system cooperation circuit 35 transmits the power supply synchronization signal SYC to the other power supply apparatus 1 via the first and second information input / output circuits 33 and 34.

(Slave mode)
The system cooperation circuit 35 sets the system control circuit 40 to the slave mode in the following cases.

  When there is another power supply device 1 that is in the master mode when its own power supply device 1 is detecting the power reception device 2, the system control circuit 40 sets the system control circuit 40 to the slave mode.

Here, the power supply device 1 may be in a state where at least one power supply coil L1 at the right end among the six power supply coils L1 is detecting the power reception device 2.
In addition, the system cooperation circuit 35 supplies power from another power supply device 1 via the first or second information input / output circuit 33 or 34 when the system control circuit 40 is in the slave mode or sleep mode and is in the standby mode. A synchronization signal SYC is input. Then, the system cooperation circuit 35 outputs the power supply synchronization signal SYC to the power supply synchronization circuit 42. The power supply synchronization circuit 42 obtains a correction count value K2 for synchronizing with the upper and lower drive signals PSa and PSb of the power supply apparatus 1 in the master mode, and outputs the correction count value K2 to the power supply signal generation circuit 41.

(System control circuit 40)
As shown in FIG. 4, the system control circuit 40 controls the power supply circuit 31 provided for each of the six power supply coils L1.

  The system control circuit 40 starts device detection processing as to whether or not the power receiving device 2 is disposed oppositely on the power supply coil L1 (power supply area AR) when the entire contactless power supply system S is started. Then, the system control circuit 40 outputs the device detection result of its own power supply apparatus 1 to the system cooperation circuit 35 that determines each mode.

  More specifically, it is assumed that immediately after the start of the entire non-contact power feeding system S, the power receiving devices 2 are not opposed to the power feeding coils L1 of all the power feeding devices 1 including the power feeding device 1 itself. For this reason, all of the power supply devices 1 including the power supply device 1 of the current supply a high-frequency current having a detection frequency different from the frequency for power supply to the power supply coil L1. The system control circuit 40 of all the power supply apparatuses 1 detects an output voltage relative to the current flowing through the power supply coil L1 and performs device detection.

  For ease of explanation, immediately after the start of the entire non-contact power feeding system S, the power receiving device 2 is not opposed to the power feeding coil L1 of all the power feeding devices 1 including the power feeding device 1 itself. However, the same applies to the case where the power receiving device 2 is disposed oppositely before activation.

  Then, the system cooperation circuit 35 inputs the result of device detection by its own power supply coil L1 and the result of device detection by another power supply device 1. Based on the result of device detection by its own power supply coil L1 and the result of device detection by another power supply device 1, the system linkage circuit 35 is switched to any one of the master mode, slave mode, sleep mode, and standby mode. 40 is set.

(sleep mode)
In the sleep mode, the system control circuit 40 supplies a high-frequency current having a detection frequency different from the power supply frequency to the power supply coil L1, and determines whether the power receiving device 2 is disposed opposite to the power supply coil L1. to continue.

  Further, when the system control circuit 40 is in the sleep mode and in the standby mode, the reference clock signal CLK of 20 MHz, for example, is output from the built-in oscillation circuit (not shown) to the power supply signal generation circuit 41. The system control circuit 40 uses the reference clock signal CLK of its own to supply the upper and lower drive signals PSa and PSb in synchronization with the upper and lower drive signals PSa and PSb of the master mode power supply apparatus 1. The generation circuit 41 generates the data.

  Further, when the system control circuit 40 enters the standby mode, the system control circuit 40 generates an L level (low potential) enable signal EN for deenergizing the power feeding coil L1 and outputs it to the power feeding signal generating circuit 41.

(Master mode)
In the master mode, the system control circuit 40 outputs a 20 MHz reference clock signal CLK from the built-in oscillation circuit to the power supply signal generation circuit 41. Then, the system control circuit 40 causes the power supply signal generation circuit 41 to generate the upper and lower drive signals PSa and PSb based on its own reference clock signal CLK.

  As shown in FIG. 9, when the system control circuit 40 enters the master mode, the system control circuit 40 generates an H-level (high potential) enable signal EN for energizing the power feeding coil L1 that detects the power receiving device 2 and supplies power. The signal is output to the signal generation circuit 41 (excitation mode). On the other hand, in the master mode, the system control circuit 40 generates an L-level enable signal EN for preparing to energize the feeding coil L1 that has not detected the power receiving device 2, and outputs the enable signal EN to the feeding signal generation circuit 41 (standby mode). ).

  In the master mode, the system control circuit 40 causes the system cooperation circuit 35 to output the falling signals of the upper and lower drive signals PSa and PSb generated by the power supply signal generation circuit 41 as the power supply synchronization signal SYC. ing. The power supply synchronization signal SYC input to the system cooperation circuit 35 is output to the other power supply apparatus 1.

(Slave mode)
In the slave mode, the system control circuit 40 outputs a 20 MHz reference clock signal CLK from the built-in oscillation circuit to the power supply signal generation circuit 41. The system control circuit 40 uses the reference clock signal CLK of its own to supply the upper and lower drive signals PSa and PSb in synchronization with the upper and lower drive signals PSa and PSb of the master mode power supply apparatus 1. The generation circuit 41 generates the data.

  Further, in the slave mode, the system control circuit 40 generates an H-level enable signal EN for energizing the power feeding coil L1 that detects the power receiving device 2 and outputs it to the power feeding signal generation circuit 41 (excitation mode). On the other hand, in the slave mode, the system control circuit 40 generates an H-level enable signal EN for preparing for energization for the feeding coil L1 that has not detected the power receiving device 2, and outputs it to the feeding signal generation circuit 41 (standby mode). ).

(Regarding device detection of the power receiving device 2 by the system control circuit 40)
The system control circuit 40 always performs the device detection process and detects the presence / absence of the power receiving device 2 for its six feeding coils L1.

  Each power supply circuit 31 is provided with an output voltage circuit (not shown) that detects a current flowing through the power supply coil L1 and generates an output voltage relative to the detected current. And the system control circuit 40 detects the presence or absence of the power receiving apparatus 2 based on the output voltage of each output voltage circuit.

  That is, when the sleep mode is not the standby mode, the system control circuit 40 supplies a high frequency current having a detection frequency to the power supply coil L1 and detects an output voltage relative to the current flowing through the power supply coil L1. . Based on the output voltage at that time, the system control circuit 40 determines whether or not the power receiving device 2 is disposed opposite to the feeding coil L1.

  Further, in the standby mode, the system control circuit 40 detects an output voltage relative to the current flowing through the power supply coil L1 in a state where the high frequency current of the power supply frequency is not supplied to the power supply coil L1. In other words, the system control circuit 40 uses the current flowing through the power supply coil L1 to be detected in linkage with the electromagnetic energy generated from the power supply coil L1 that is energized with a high-frequency current at a nearby power supply frequency. The output voltage relative to the current is detected. Based on the output voltage at that time, the system control circuit 40 determines whether or not the power receiving device 2 is disposed opposite to the feeding coil L1.

  Further, in the excitation mode, the system control circuit 40 detects an output voltage relative to the current flowing through the power supply coil L1 in a state where the power supply coil L1 is energized with a high frequency current having a power supply frequency. Then, the system control circuit 40 determines whether or not the power receiving device 2 is disposed opposite to the power feeding coil L1 based on the output voltage at that time.

(Power supply signal generation circuit 41)
The power supply signal generation circuit 41 generates upper and lower drive signals PSa and PSb. The power supply signal generation circuit 41 has a counter CNT that receives the reference clock signal (20 MHz) CLK from the system control circuit 40 and counts the reference clock signal CLK.

The power supply signal generation circuit 41 operates differently depending on the mode set by the system control circuit 40.
(When the system control circuit 40 is in the master mode)
When the system control circuit 40 is in the master mode, the power supply signal generation circuit 41 is inverted based on a preset count value (reference count value K1) counted by the counter CNT, for example, 100 kHz upper and lower drive signals PSa, PSb is generated.

That is, the inversion timing of the upper and lower drive signals PSa and PSb from the L level to the H level and from the H level to the L level is set by the reference count value K1.
Therefore, in the master mode, the power supply signal generation circuit 41 generates the upper and lower drive signals PSa and PSb of the inversion period based on the reference count value K1 that the power supply signal generation circuit 41 has.

(When system control circuit 40 is in slave mode)
The power supply signal generation circuit 41 receives the correction count value K2 from the power supply synchronization circuit 42 when the system control circuit 40 is in the slave mode. The power supply signal generation circuit 41 receives the reference clock signal CLK from the system control circuit 40 and generates upper and lower drive signals PSa and PSb that are inverted based on the correction count value K2 counted by the counter CNT. That is, the inversion timings of the upper and lower drive signals PSa and PSb are generated not by the reference count value K1 but by the correction count value K2 from the power feeding synchronization circuit 42.

  The correction count value K2 is calculated based on the upper and lower drive signals synchronized with the upper and lower drive signals PSa and PSb of the power supply device 1 in the master mode by using the reference clock signal CLK of the system control circuit 40. This is a count value for generating PSa and PSb.

  Therefore, in the slave mode, the power supply signal generation circuit 41 is synchronized with the upper and lower drive signals PSa and PSb of the power supply apparatus 1 in the master mode in the inversion period based on the correction count value K2 from the power supply synchronization circuit 42. Upper and lower drive signals PSa and PSb are generated.

  The power supply signal generation circuit 41 outputs the upper and lower drive signals PSa and PSb generated in the slave mode to the power supply synchronization circuit 42, and the power supply synchronization circuit 42 generates the power supply synchronization signal SYC of the power supply apparatus 1 in the master mode. Thus, the correction count value K2 is created.

(When the system control circuit 40 is in the sleep mode)
Further, when the system control circuit 40 is in the sleep mode, the power supply signal generation circuit 41 reverses based on a preset count value K3 for device detection that is counted by the counter CNT. Drive signals PSa and PSb are generated. That is, the inversion timing from the L level to the H level and from the H level to the L level of the upper and lower drive signals PSa and PSb is set by the detection count value K3.

  Therefore, in the sleep mode, the power supply signal generation circuit 41 generates the upper and lower drive signals PSa and PSb for device detection based on the detection count value K3 that the power supply signal generation circuit 41 has.

  The power supply signal generation circuit 41 is provided with six gate circuits 44 corresponding to the six power supply circuits 31. The power supply signal generation circuit 41 corresponds to the upper and lower drive signals PSa and PSb generated in the master mode, the slave mode, and the sleep mode via the gate circuit 44 provided corresponding to the six power supply circuits 31. Each is output to the power feeding circuit 31.

  As shown in FIG. 6, the gate circuit 44 includes a first AND circuit 45 having two input terminals and a second AND circuit 46 having two input terminals. The output terminal of the first AND circuit 45 is connected to the gate terminal of the first power transistor Qa. The output terminal of the second AND circuit 46 is connected to the gate terminal of the second power transistor Qb.

  The generated upper drive signal PSa is input to one input terminal of the first AND circuit 45, and the enable signal EN from the system control circuit 40 is input to the other input terminal. Further, the generated lower drive signal PSb is input to one input terminal of the second AND circuit 46, and the enable signal EN from the system control circuit 40 is input to the other input terminal.

  Therefore, as shown in FIG. 9, when the enable signal EN is at L level, the upper drive signal PSa output from the first AND circuit 45 becomes a signal fixed at L level and is output from the second AND circuit 46. The lower drive signal PSb is a signal fixed at the L level. As a result, the first and second power transistors Qa and Qb of the power feeding circuit 31 are turned off, and a high frequency current is not passed through the power feeding coil L1.

  That is, in the power supply signal generation circuit 41, the upper and lower drive signals PSa and PSb are generated, but are not output to the power supply circuit 31. Therefore, the first and second power transistors Qa and Qb cannot be turned on / off, and a high-frequency current is not supplied to the feeding coil L1. This state is referred to as a standby mode. In this standby mode, an L level enable signal EN is output from the system control circuit 40 to the gate circuit 44.

  In other words, in the power supply device 1 in the master mode, the L level enable signal EN is output to the gate circuit 44 corresponding to the power supply coil L1 that has not detected the power reception device 2. Similarly, in the power supply apparatus 1 in the slave mode, the L level enable signal EN is output to the gate circuit 44 corresponding to the power supply coil L1 that has not detected the power reception apparatus 2.

  On the other hand, as shown in FIG. 9, when the enable signal EN is at the H level, the upper drive signal PSa generated in the power supply signal generation circuit 41 is output from the first AND circuit 45 and also in the power supply signal generation circuit 41. The generated lower drive signal PSb is output from the second AND circuit 46.

  As a result, when the enable signal EN is at the H level, the first and second power transistors Qa and Qb of the power feeding circuit 31 are turned on / off, and a high frequency current is passed through the power feeding coil L1. This state is called an excitation mode. In this excitation mode, an enable signal EN of H level is output from the system control circuit 40 to the gate circuit 44.

  In other words, in the power supply device 1 in the master mode, the H level enable signal EN is output to the gate circuit 44 corresponding to the power supply coil L1 that detects the power reception device 2. Similarly, in the power supply device 1 in the slave mode, the H level enable signal EN is output to the gate circuit 44 corresponding to the power supply coil L1 that detects the power reception device 2.

  In addition, when the power supply signal generation circuit 41 is operating in the sleep mode, the system control circuit 40 outputs an H level enable signal EN to the gate circuit 44. Therefore, a high-frequency current having a detection frequency is supplied to the feeding coil L1.

  Note that there is a case where the power supply coil 1 of the power supply apparatus 1 that is the sleep mode power supply apparatus 1 and closest to the sleep mode power supply apparatus 1 detects the power reception apparatus 2. In this case, the power feeding device 1 performs the same operation as the power feeding device 1 in the standby mode in the slave mode. The power supply signal generation circuit 41 generates upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb of the power supply apparatus 1 in the master mode. At this time, the L level enable signal EN is input to the gate circuit 44 from the system control circuit 40.

  That is, the system control circuit 40 outputs the upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb of the master mode power supply apparatus 1 generated by the power supply signal generation circuit 41 to the gate circuit 44. Not.

(Feeding synchronization circuit 42)
The power feeding synchronization circuit 42 generates the correction count value K2 when the system control circuit 40 is in the slave mode or in the sleep mode and the standby mode, and outputs the correction count value K2 to the power feeding signal generation circuit 41. That is, the power feeding synchronization circuit 42 generates correction count values for generating the upper and lower driving signals PSa and PSb that are synchronized with the upper and lower driving signals PSa and PSb of the power feeding device 1 in the master mode. K2 is generated.

  Here, the reason for generating the upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb of the power supply apparatus 1 in the master mode using the reference clock signal CLK of the master mode in the slave mode or the like. This will be described below.

  Now, it is assumed that the power receiving device 2 is supplied with power from each of the power supply coils L1 across the two power supply devices 1. Each of the two power supply apparatuses 1 counts the reference clock signal CLK from the system control circuit 40 and the same reference count value K1 by the counter CNT of its own power supply signal generation circuit 41, respectively, and drives the upper side and the lower side, respectively. Assume that signals PSa and PSb are generated.

  By the way, the circuit elements constituting the system control circuit 40 that oscillates the reference clock signal CLK have individual differences in each power supply device 1. Due to this individual difference, the frequency of the reference clock signal CLK differs for each system control circuit 40 (power feeding device 1).

  Thus, the time required for one counter CNT to count the reference clock signal CLK to the reference count value K1 is different from the time required for the other counter CNT to count the reference clock signal CLK to the reference count value K1.

  As a result, the frequencies (cycles) of the upper and lower drive signals PSa and PSb generated by one power supply signal generation circuit 41 and the upper and lower drive signals PSa and PSb generated by the other power supply signal generation circuit 41 are different. Will do.

  FIG. 10 shows a case where the frequencies of the upper and lower drive signals PSa2 and PSb2 generated by the other power supply apparatus 1 are lower than the frequencies of the upper and lower drive signals PSa1 and PSb1 generated by one power supply apparatus 1. The waveform is shown.

  Further, FIG. 11 shows that the frequencies of the upper and lower drive signals PSa2 and PSb2 generated by the other power supply apparatus 1 are higher than the frequencies of the upper and lower drive signals PSa1 and PSb1 generated by one power supply apparatus 1. The waveform when high is shown.

  As shown in FIG. 10 and FIG. 11, the upper and lower drive signals PSa and PSb are exchanged between one power supply device 1 and the other power supply device 1 every time a fixed time elapses. Each phase is 180 degrees out of phase.

  At this time, the electromagnetic energy generated when the power supply coil L1 of one power supply device 1 is energized with high frequency current and the electromagnetic energy generated when the power supply coil L1 of the other power supply device 1 is energized with high frequency current. Energy will cancel out. As a result, there is a problem that even if one power feeding device 1 and the other power feeding device 1 cooperate to feed the power receiving device 2, electromagnetic energy cancels out and power feeding to the power receiving device 2 is temporarily stopped. Arise. The same problem occurs when three or more power supply apparatuses 1 are driven simultaneously.

  Therefore, in order to solve this problem, one power supply device 1 serving as a reference is determined, and another power supply device 1 is set as a power supply device 1 subordinate to the power supply device 1 serving as a reference. That is, the power supply device 1 serving as a reference is the power supply device 1 in the master mode, and the subordinate power supply device 1 is the power supply device 1 in the slave mode. The subordinate (slave mode) power supply apparatus 1 generates the upper and lower drive signals PSa and PSb that are synchronized with the upper and lower drive signals PSa and PSb generated by the reference (master mode) power supply apparatus 1. That's fine.

  For this reason, the power feeding synchronization circuit 42 uses the upper and lower drive signals PSa and PSb of the power feeding device 1 in the master mode as a reference, and the correction count value K2 for the deviation amounts of the upper and lower drive signals PSa and PSb of the power feed signal generation circuit 41. Is to ask for.

Next, a method for obtaining the correction count value K2 of the power feeding synchronization circuit 42 will be described.
Here, the reference clock signal CLK output from the system control circuit 40 in the master mode is set as the first clock CLK1. The reference clock signal CLK output from the system control circuit 40 in the slave mode is set as the second clock CLK2.

  First, a case where the frequency of the second clock CLK2 is lower than the first clock CLK1 will be described. In this case, the upper and lower drive signals PSa and PSb of the power supply signal generation circuit 41 in the master mode are higher than the frequencies of the upper and lower drive signals PSa and PSb of the power supply signal generation circuit 41 in the slave mode.

  The upper two waveforms in FIG. 12 are waveform diagrams of the upper and lower drive signals PSa1 and PSb1 generated by the power supply signal generation circuit 41 of the power supply apparatus 1 in the master mode. The upper and lower drive signals PSa1 and PSb1 are waveform diagrams in which the first clock CLK1 is counted by the first counter CNT1 and inverted at the reference count value K1 (“200” in the figure).

  The waveform at the center of FIG. 12 is a waveform diagram of the feeding synchronization signal SYC output in response to the falling edge every second cycle of the upper drive signal PSa1 generated by the feeding signal generation circuit 41 of the feeding device 1 in the master mode. is there.

  The lower two waveforms in FIG. 12 are waveform diagrams of the upper and lower drive signals PSa2 and PSb2 generated by the power supply signal generation circuit 41 of the power supply apparatus 1 in the slave mode. The upper and lower drive signals PSa2 and PSb2 are waveform diagrams in which the second clock CLK2 is counted by the second counter CNT2 and inverted at the reference count value K1 (same “200” in the figure).

  Therefore, when the first counter CNT1 that counts the inversion timing of the upper drive signal PSa in the master mode counts “200”, the second counter CNT2 that counts the inversion timing of the upper drive signal PSa2 in the slave mode is “180”. It is a count value. When the second counter CNT2 counts “20” after the second clock CLK2, the reference count value K1 becomes “200”.

  The fall timing of the upper drive signal PSa2 in the slave mode is delayed from the fall timing of the upper drive signal PSa1 in the master mode by 20 times (difference) of the second clock CLK2.

  Since this difference is counted by the falling signal (feeding synchronization signal SYC) every second cycle of the upper drive signal PSa1 in the master mode, it is converted into a difference for one cycle. The difference for one period is obtained by dividing by the number of periods, that is, “2”. In this case, the difference in delay for one cycle is “10”.

  That is, when the second counter CNT2 counts “190”, which is smaller by “10” than “200” of the reference count value K1, the first counter CNT1 uses the first clock CLK1 as “1” of the reference count value K1. 200 "is counted.

  In other words, when the second counter CNT2 counts the second clock CLK2 to “190” and the inversion timing of the falling edge of the upper drive signal PSa2, the upper drive signal PSa1 of the power supply signal generation circuit 41 in the master mode is Synchronize. Then, the power feeding synchronization circuit 42 outputs “190”, which is smaller by “10” than “200” of the reference count value K1, to the power feeding signal generation circuit 41 as the correction count value K2.

  Accordingly, when the frequency of the second clock CLK2 is lower than the first clock CLK1, the power supply signal generation circuit 41 causes the upper and lower drive signals PSa2 synchronized with the upper and lower drive signals PSa1 and PSb1 in the master mode. , PSb2 can be generated. That is, the power supply signal generation circuit 41 can generate the upper and lower drive signals PSa2 and PSb2 synchronized with the upper and lower drive signals PSa1 and PSb1 in the master mode using the second clock CLK2.

  Next, a case where the frequency of the second clock CLK2 is higher than the first clock CLK1 will be described. In this case, the upper and lower drive signals PSa and PSb of the power supply signal generation circuit 41 in the master mode are lower than the frequencies of the upper and lower drive signals PSa and PSb of the power supply signal generation circuit 41 in the slave mode.

  The upper two waveforms in FIG. 13 are waveform diagrams of the upper and lower drive signals PSa1 and PSb1 generated by the power supply signal generation circuit 41 of the power supply apparatus 1 in the master mode. The upper and lower drive signals PSa1 and PSb1 are waveform diagrams in which the first clock CLK1 is counted by the first counter CNT1 and inverted at the reference count value K1 (“200” in the figure).

  The central waveform in FIG. 13 is a waveform diagram of the power supply synchronization signal SYC output in response to the falling edge every second cycle of the upper drive signal PSa1 generated by the power supply signal generation circuit 41 of the power supply apparatus 1 in the master mode. is there.

  The lower two waveforms in FIG. 13 are waveform diagrams of the upper and lower drive signals PSa2 and PSb2 generated by the power supply signal generation circuit 41 of the power supply apparatus 1 in the slave mode. The upper and lower drive signals PSa2 and PSb2 are waveform diagrams in which the second clock CLK2 is counted by the second counter CNT2 and inverted at the reference count value K1 (same “200” in the figure).

  Therefore, when the second counter CNT2 that counts the inversion timing of the upper drive signal PSa2 in the slave mode counts “200”, the first counter CNT1 that counts the inversion timing of the upper drive signal PSa1 in the master mode is less than “200”. Is the count value. That is, when the second counter CNT2 counts the second clock CLK2 by “200” and then counts the second clock CLK2 by “20”, the first counter CNT1 becomes “200” as the reference count value K1.

  The falling timing of the upper drive signal PSa2 in the slave mode is advanced from the falling timing of the upper drive signal PSa1 in the master mode by 20 times (difference) of the second clock CLK2.

  Since this difference is counted by the falling signal (feeding synchronization signal SYC) every second cycle of the upper drive signal PSa1 in the master mode, it is converted into a difference for one cycle. The difference for one period is obtained by dividing by the number of periods, that is, “2”. In this case, the advance difference for one cycle is “10”.

  That is, when the second counter CNT2 counts “210”, which is larger by “10” than “200” of the reference count value K1, the first counter CNT1 uses the first clock CLK1 as “ 200 "is counted.

  In other words, when the second counter CNT2 counts the second clock CLK2 to “210” and the inversion timing of the falling edge of the upper drive signal PSa2, the upper drive signal PSa1 of the power supply signal generation circuit 41 in the master mode is Synchronize. Then, the power feeding synchronization circuit 42 outputs “210” which is larger by “10” than “200” of the reference count value K1 to the power feeding signal generation circuit 41 as the correction count value K2.

  Thus, when the frequency of the second clock CLK2 is higher than the first clock CLK1, the power supply signal generation circuit 41 causes the upper and lower drive signals PSa2 synchronized with the upper and lower drive signals PSa1 and PSb1 in the master mode. , PSb2 can be generated. That is, the power supply signal generation circuit 41 can generate the upper and lower drive signals PSa2 and PSb2 synchronized with the upper and lower drive signals PSa1 and PSb1 in the master mode using the second clock CLK2.

  As a result, when the power supply device 1 in the master mode and the power supply device 1 in the slave mode cooperate to supply power to the power reception device 2, the electromagnetic energy of both power supply devices 1 does not cancel each other, and the power reception device 2 is made efficient. Power well.

Next, an electrical configuration of the power receiving device 2 that is fed by the power feeding device 1 will be described.
(Power receiving device 2)
In FIG. 7, the power receiving device 2 includes a power receiving coil L2 that generates secondary power in linkage with the alternating magnetic flux generated by the power feeding coil L1, and a power receiving circuit 55 that is connected to the power receiving coil L2. The power receiving coil L2 is connected in series with the resonant capacitor Cx2.

  The power receiving circuit 55 includes a rectifying / smoothing circuit unit and a DC / AC conversion circuit. The power receiving circuit 55 converts the secondary power generated by the power receiving coil L2 in the rectifying and smoothing circuit unit into a DC voltage without ripples, and is mounted on the casing 21 of the power receiving device 2 by the DC / AC conversion circuit. Convert to AC voltage for E power supply specification. The power receiving circuit 55 supplies a DC / AC converted AC voltage to the load Z of the electrical device E as a driving power source.

  Here, the electrical device E may be any device that is driven by the secondary power generated by the power receiving coil L2. For example, it is an electric device that is driven on the casing 21 of the power receiving apparatus 2 using a DC power source converted by the power receiving circuit 55, or is driven on the casing 21 of the power receiving apparatus 2 using secondary power as it is as an AC power source. It may be an electrical device. Further, it may be an electric device that charges a built-in rechargeable battery (secondary battery) using a DC power source converted by the power receiving circuit 55.

Next, the operation of the non-contact power feeding system S configured as described above will be described.
14 and 15 are schematic views of a plurality of power feeding devices 1 and power receiving devices 2 arranged in one direction for easy understanding of the operation. For ease of explanation, the number of power supply devices 1 is three.

  Now, as shown in FIG. 14A, the power receiving device 2 is disconnected from the three power supply devices 1. In this state, when power is supplied to the three power supply devices 1 all at once, the system control circuit 40 of the three power supply devices 1 faces the power receiving device 2 on the six power supply coils L1 belonging to each of them. The device detection process is started to determine whether it has been placed.

  Each system control circuit 40 uses the detection count value K3 for the power supply signal generation circuit 41 to drive the power supply coil L1 with a high-frequency current having a detection frequency different from the power supply frequency. Signals PSa and PSb are generated. Accordingly, the six power supply coils L1 of the three power supply apparatuses 1 are energized with a high-frequency current having a detection frequency, and device detection of the power reception apparatus 2 is started.

  In the state illustrated in FIG. 14A, each power supply coil L <b> 1 of each power supply device 1 is not opposed to the power reception device 2, and thus the system cooperation circuit 35 of each power supply device 1 is in a sleep mode. At this time, the system cooperation circuit 35 of each power supply apparatus 1 transmits its own device detection result that has not detected the power receiving apparatus 2 to each of the other power supply apparatuses 1.

  Next, when the power receiving device 2 is moved and arranged from the position shown in FIG. 14A to the position shown in FIG. 14B, the system control circuit 40 of the left power feeding device 1 has all six power feeding coils L1 as the power receiving device. 2 is detected, and the device detection result is output to the system linkage circuit 35. The device detection result is transmitted to the right power supply apparatus 1 through the central power supply apparatus 1 together with the central power supply apparatus 1 through the second information transmission circuit 34b.

  On the other hand, in the central and right power supply devices 1, all six power supply coils L <b> 1 do not detect the power reception device 2. As a result, the central and right power supply apparatuses 1 output device detection results that have not detected the power reception apparatus 2 to the left power supply apparatus 1.

  Therefore, the system linkage circuit 35 of the left power supply device 1 sets the system control circuit 40 in the master mode and sets the power reception device 2 in the excitation mode for all the power supply coils L1. Then, the system control circuit 40 in the master mode uses the reference count value K1 for the power supply signal generation circuit 41 to supply the high frequency current of the power supply frequency to the power supply coil L1, and the upper and lower drive signals PSa. , PSb is generated. As a result, all six power supply coils L1 of the left power supply apparatus 1 are supplied with a high-frequency current having a power supply frequency to supply power to the power reception apparatus 2.

  At this time, the system cooperation circuit 35 of the power supply device 1 on the left side receives the information signal D including the information of the power supply coil L1 in the excitation mode and the power supply synchronization signal SYC in the center and the right side. To the power feeding device 1 of

  The central power feeding device 1 receives the information signal D from the left power feeding device 1. Then, the central power supply device 1 (system cooperation circuit 35) is in the sleep mode but not in the standby mode because all of its power supply coils L1 have not detected the power reception device 2. That is, since the feeding coil L1 of the left feeding device 1 and the rightmost feeding coil L1 closest to the central feeding device 1 is in the excitation mode, the central system linkage circuit 35 sets the system control circuit 40 to standby. Enter mode.

  Then, the central system control circuit 40 generates the correction count value K2 in the power supply synchronization circuit 42 and outputs it to the power supply signal generation circuit 41. The power supply signal generation circuit 41 generates upper and lower drive signals PSa and PSb that are synchronized with the upper and lower drive signals PSa and PSb of the left power supply apparatus 1 using the correction count value K2.

  At this time, since the central system control circuit 40 outputs the L level enable signal EN to all the gate circuits 44 of the power supply signal generation circuit 41, the upper and lower drive signals PSa generated by the power supply signal generation circuit 41 are output. , PSb is not output to the power feeding circuit 31. As a result, the high frequency current of the power feeding frequency is not passed through all the six power feeding coils L1 of the central power feeding device 1. In this state, the six power feeding coils L1 of the central power feeding device 1 detect the power receiving device 2.

  On the other hand, the right power supply apparatus 1 receives the information signal D from the left power supply apparatus 1. Then, the system linkage circuit 35 on the right side is in the sleep mode because all of its own power supply coil L1 has not detected the power receiving device 2. In addition, since the rightmost power supply coil L1 of the central power supply device 1 and closest to the right power supply device 1 is not in the excitation mode, the right system linkage circuit 35 sets the system control circuit 40 in the standby mode. do not do.

  The right-side system control circuit 40 uses the detection count value K3 for the power supply signal generation circuit 41 to drive the power supply coil L1 with a high frequency current having a detection frequency different from the power supply frequency. Signals PSa and PSb are generated. As a result, the six power supply coils L1 of the right power supply apparatus 1 are energized with a high-frequency current having a detection frequency, and detection of the power reception apparatus 2 is continued.

  Next, when the power receiving device 2 is moved and arranged from the position shown in FIG. 14B to the position shown in FIG. 14C, the power feeding device 1 on the left side (system control circuit 40) receives power from the three power feeding coils L1 on the right side. The device 2 is detected, and it is determined that the left three feeding coils L1 do not detect the power receiving device 2. The left system control circuit 40 outputs the device detection result to the system cooperation circuit 35.

  The system linkage circuit 35 on the left side outputs the device detection result to the central power feeding device 1 via the second information transmission circuit 34 b and also outputs the device detection result to the right power feeding device 1 via the central power feeding device 1.

  At this time, the left system linkage circuit 35 switches the system control circuit 40 from the excitation mode to the standby mode with respect to the left three feeding coils L1. Accordingly, in the power supply device 1 on the left side, only the three power supply coils L1 on the right side maintain the excitation mode and continue to supply power to the power reception device 2.

  Incidentally, at this time, the left system control circuit 40 keeps the left three feeding coils L1 in the standby mode in a non-energized state. In this state, the left three feeding coils L1 of the left feeding device 1 detect the power receiving device 2.

  On the other hand, the central power supply apparatus 1 (system control circuit 40) determines that the left three power supply coils L1 have detected the power reception apparatus 2 and have not detected the right three power supply coils L1. The central system cooperation circuit 35 sets the system control circuit 40 to the slave mode and sets the left three feeding coils L1 to the excitation mode based on the information signal D of the left feeding device 1 and the detection result of confidence.

  In the central system control circuit 40, the upper and lower drive signals PSa and PSb of the left feeding device 1 generated by the feeding signal generation circuit 41 are added to the feeding circuit 31 of the three left feeding coils L1 in the excitation mode. Are output respectively. That is, the power supply circuit 31 of the left three power supply coils L1 in the excitation mode is synchronized with the upper and lower drive signals PSa and PSb of the left power supply device 1 already generated by the power supply signal generation circuit 41. Upper and lower drive signals PSa and PSb are input. Accordingly, the left three feeding coils L1 of the central feeding device 1 are energized with a high-frequency current having the same feeding frequency synchronized with the three right feeding coils L1 of the left feeding device 1.

  Therefore, even if the feeding coil L1 of the left and center feeding devices 1 cooperate to feed the power receiving device 2, there is no cancellation of electromagnetic energy generated by both feeding devices 1 (feeding coil L1). The power receiving device 2 is efficiently fed.

  Moreover, the upper and lower drive signals PSa synchronized with the upper and lower drive signals PSa and PSb of the left feed device 1 in the feed signal generation circuit 41 in the standby mode before entering the slave mode. , PSb was produced. The central power supply device 1 can immediately output the synchronized upper and lower drive signals PSa and PSb to the power supply circuit 31 of the power supply coil L1 that is in the slave mode and in the excitation mode.

Therefore, switching from the standby mode to the excitation mode is performed in a short time without reducing the power supply efficiency.
The central system linkage circuit 35 outputs the slave mode and the device detection result to the left and right power supply apparatuses 1 via the first and second information transmission circuits 33b and 34b.

  At this time, the central system cooperation circuit 35 maintains the system control circuit 40 in the standby mode for the three right-hand feeding coils L1. Accordingly, in the central power supply device 1, the three right-side power supply coils L1 are maintained in a non-energized state. In this state, the three power supply coils L1 on the right side of the central power supply device 1 detect the power reception device 2.

  On the other hand, in the power supply device 1 on the right side, all six power supply coils L1 do not detect the power reception device 2. As a result, the right system cooperation circuit 35 outputs a device detection result that does not detect the power receiving device 2 to the left power supply device 1. Further, the right system cooperation circuit 35 receives the information signal D from the left and center power supply apparatuses 1.

  Then, the system link circuit 35 on the right side sets the system control circuit 40 to the sleep mode because all the power supply coils L1 thereof have not detected the power receiving device 2. In addition, since the rightmost power supply coil L1 of the central power supply device 1 and closest to the right power supply device 1 is not in the excitation mode, the right system linkage circuit 35 sets the system control circuit 40 in the standby mode. Don't make it.

  The system control circuit 40 on the right side generates upper and lower drive signals PSa and PSb for supplying a high-frequency current having a detection frequency to the power supply coil L1 using the detection count value K3 to the power supply signal generation circuit 41. Let As a result, the six power supply coils L1 of the right power supply apparatus 1 are energized with a high-frequency current having a detection frequency, and detection of the power reception apparatus 2 is continued.

  Next, when the power receiving device 2 is moved and arranged from the position shown in FIG. 14C to FIG. 15A, the system control circuit 40 of the central power feeding device 1 has all six power feeding coils L1 received by the power receiving device. 2 is detected, and the device detection result is output to the system linkage circuit 35. The system cooperation circuit 35 outputs the device detection result to the left and right power supply apparatuses 1 via the first and second information transmission circuits 33b and 34b.

  On the other hand, in the left and right power supply devices 1, all six power supply coils L <b> 1 do not detect the power reception device 2. As a result, the left and right system cooperation circuits 35 output device detection results for not detecting the power receiving device 2 to the central system cooperation circuit 35.

  Therefore, the central system cooperation circuit 35 sets the system control circuit 40 in the master mode and also sets the excitation mode for all the feeding coils L1 that are detecting the power receiving device 2. Then, the central system control circuit 40 in the master mode uses upper and lower drives for supplying a high-frequency current of a power supply frequency to the power supply coil L1 with respect to the power supply signal generation circuit 41 using the reference count value K1. Signals PSa and PSb are generated. As a result, all six power supply coils L1 of the central power supply apparatus 1 are energized with a high-frequency current having a frequency for power supply to supply power to the power reception apparatus 2.

  At this time, the central system linkage circuit 35 receives the information signal D including the information of the power supply coil L1 in the excitation mode and the power supply synchronization signal SYC from the left and right power supply devices 1. Output to.

  The left and right system linkage circuits 35 receive the information signal D from the central system linkage circuit 35. Then, the left and right system linkage circuits 35 set the left and right system control circuits 40 to the standby mode although they are in the sleep mode because all of their power supply coils L1 have not detected the power receiving device 2. That is, since both the left and right power supply coils L1 of the central power supply device 1 are in the excitation mode, the left and right system control circuits 40 are in the standby mode.

  Then, the left and right system control circuits 40 generate the correction count value K <b> 2 in each power supply synchronization circuit 42 and output the correction count value K <b> 2 to the power supply signal generation circuit 41. Each of the power supply signal generation circuits 41 generates upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb of the central power supply device 1 using the correction count value K2.

  At this time, the left and right system control circuits 40 output the L level enable signal EN to all the gate circuits 44 of the power supply signal generation circuit 41, respectively. That is, the left and right system control circuits 40 do not cause the power supply circuit 31 to output the upper and lower drive signals PSa and PSb generated by the power supply signal generation circuit 41. As a result, the high-frequency current of the power supply frequency is not supplied to all six power supply coils L1 of the left and right power supply apparatuses 1. In this state, the six power supply coils L1 of the left and right power supply apparatuses 1 detect the power reception apparatus 2.

  Next, when the power receiving device 2 is moved and arranged from the position shown in FIG. 15A to FIG. 15B, the central system control circuit 40 detects the power receiving device 2 by the three right-hand feeding coils L1. The left three feeding coils L1 are determined not to detect the power receiving device 2. The central system control circuit 40 outputs the device detection result to the system cooperation circuit 35. The central system cooperation circuit 35 outputs the device detection result to the left and right system cooperation circuits 35 via the first and second information transmission circuits 33b and 34b.

  At this time, the central system linkage circuit 35 switches the system control circuit 40 from the excitation mode to the standby mode for the three left-side feeding coils L1. Accordingly, in the power supply device 1 on the left side, only the three power supply coils L1 on the right side maintain the excitation mode and continue to supply power to the power reception device 2.

  Incidentally, at this time, the central system control circuit 40 puts the left three feeding coils L1 in the standby mode into a non-energized state. In this state, the three power supply coils L1 on the left side of the central power supply device 1 detect the power reception device 2.

  On the other hand, the system control circuit 40 on the right side determines that the three power supply coils L1 on the left side detect the power receiving device 2 and does not detect the three power supply coils L1 on the right side. The right system linkage circuit 35 sets the system control circuit 40 to the slave mode and the left three feeding coils L1 to the excitation mode based on the information signal D of the central feeding device 1 and the detection result of confidence. .

  The system control circuit 40 on the right side is connected to the power supply circuit 31 of the three power supply coils L1 on the left side in the excitation mode, and the upper and lower drive signals PSa of the left power supply device 1 generated by the power supply signal generation circuit 41. PSb is output respectively. That is, the power supply circuit 31 of the left three power supply coils L1 in the excitation mode is synchronized with the upper and lower drive signals PSa and PSb of the central power supply device 1 already generated by the power supply signal generation circuit 41. Upper and lower drive signals PSa and PSb are input. Accordingly, the left three feeding coils L1 of the right feeding device 1 are energized with a high frequency current having the same feeding frequency synchronized with the three right feeding coils L1 of the central feeding device 1.

  Therefore, even if the feeding coil L1 of the middle and right feeding devices 1 cooperate to feed the power receiving device 2, there is no cancellation of electromagnetic energy generated by both feeding devices 1 (feeding coil L1). The power receiving device 2 is efficiently fed.

  In addition, the power supply device 1 on the right side has the upper and lower drive signals PSa synchronized with the upper and lower drive signals PSa and PSb of the central power supply device 1 in the power supply signal generation circuit 41 in the standby mode before entering the slave mode. , PSb was produced. The right-side power supply apparatus 1 can immediately output the synchronized upper and lower drive signals PSa and PSb to the power supply circuit 31 of the power supply coil L1 that is in the slave mode and in the excitation mode.

Therefore, switching from the standby mode to the excitation mode is performed in a short time without reducing the power supply efficiency.
Further, the right system linkage circuit 35 outputs the fact that the slave mode has been entered and the device detection result to the left and center system linkage circuits 35 via the first information transmission circuit 33b.

  At this time, the right system control circuit 40 maintains the standby mode for the three right feeding coils L1. Accordingly, the right power supply device 1 maintains the three right power supply coils L1 in a non-energized state. In this state, the right three feeding coils L1 of the right feeding device 1 detect the power receiving device 2.

  On the other hand, in the left power supply device 1, all six power supply coils L <b> 1 do not detect the power reception device 2. As a result, the left system cooperation circuit 35 outputs a device detection result that does not detect the power receiving device 2 to the central and right system cooperation circuits 35. The left system linkage circuit 35 receives the information signal D from the center and left system linkage circuits 35.

  Then, the system linkage circuit 35 on the left side sets the system control circuit 40 to the sleep mode because all of its power supply coils L1 have not detected the power receiving device 2. In addition, since the leftmost feeding coil L1 of the central feeding apparatus 1 is not in the excitation mode, the standby mode is not set.

  As a result, the left system control circuit 40 uses the detection count value K3 for the power supply signal generation circuit 41 to supply the upper and lower drive signals PSa, PSb is generated. The six power supply coils L1 of the left power supply apparatus 1 are energized with a high-frequency current having a detection frequency, and the power reception apparatus 2 is detected.

  Next, when the power receiving apparatus 2 is moved and arranged from the position shown in FIG. 15B to the position shown in FIG. 15C, the system control circuit 40 of the right power supply apparatus 1 has all six power supply coils L1 received by the power receiving apparatus. 2 is detected, and the device detection result is output to the system linkage circuit 35. The right system cooperation circuit 35 outputs the device detection result to the central and left system cooperation circuits 35 via the second information transmission circuit 34b.

  On the other hand, in the central and left power supply devices 1, all six power supply coils L <b> 1 do not detect the power reception device 2. As a result, the center and left system linkage circuits 35 output device detection results for the right power supply apparatus 1 that have not detected the power receiving apparatus 2.

  Therefore, the system link circuit 35 on the right side sets the system control circuit 40 in the master mode and also sets the excitation mode for all the feeding coils L1 that are detecting the power receiving device 2. Then, the system control circuit 40 in the master mode uses the reference count value K1 for the power supply signal generation circuit 41 to supply the high frequency current of the power supply frequency to the power supply coil L1, and the upper and lower drive signals PSa. , PSb is generated. As a result, all six power supply coils L1 of the left power supply apparatus 1 are supplied with a high-frequency current having a power supply frequency to supply power to the power reception apparatus 2.

  At this time, the right system linkage circuit 35 receives the information signal D including the information of the feeding coil L1 in the master mode and the excitation mode, and the feeding synchronization signal SYC, and the center and left system linkage circuits 35. Output to. The central and left system cooperation circuits 35 receive the information signal D from the right power supply apparatus 1.

  Then, the central system linkage circuit 35 sets the system control circuit 40 to the standby mode because all the power supply coils L1 have not detected the power receiving device 2. That is, since the leftmost feeding coil L1 of the right feeding device 1 is in the excitation mode, the standby mode is set.

  Then, the central system control circuit 40 generates the correction count value K2 in the power supply synchronization circuit 42 and outputs it to the power supply signal generation circuit 41. The power supply signal generation circuit 41 generates upper and lower drive signals PSa and PSb that are synchronized with the upper and lower drive signals PSa and PSb of the left power supply apparatus 1 using the correction count value K2.

  At this time, since the central system control circuit 40 outputs the L level enable signal EN to all the gate circuits 44 of the power supply signal generation circuit 41, the upper and lower drive signals PSa generated by the power supply signal generation circuit 41 are output. , PSb is not output to the power feeding circuit 31. As a result, the high frequency current of the power feeding frequency is not passed through all the six power feeding coils L1 of the central power feeding device 1. In this state, the six power feeding coils L1 of the central power feeding device 1 detect the power receiving device 2.

  On the other hand, the system linkage circuit 35 on the left side sets the system control circuit 40 to the sleep mode because all the power supply coils L1 thereof have not detected the power receiving device 2. In addition, since the leftmost feeding coil L1 of the central feeding device 1 is not in the excitation mode, the standby mode is not set.

  Therefore, the system control circuit 40 on the left side uses the detection count value K3 to the power supply signal generation circuit 41 to supply the power supply coil L1 with a high frequency current having a detection frequency different from the power supply frequency. Side drive signals PSa and PSb are generated. Accordingly, the six power supply coils L1 of the left power supply apparatus 1 are energized with a high frequency current having a detection frequency, and the power reception apparatus 2 is detected.

Next, the effect of 1st Embodiment is described below.
(1) According to the present embodiment, the non-contact power feeding system S that expands the power feeding area can be constructed simply by connecting the power feeding device 1. In addition, since the number of the power feeding devices 1 is only changed as appropriate according to the size of the place to be installed, the design change of the non-contact power feeding system S according to the size of the place to be installed can be easily performed.

  (2) According to this embodiment, the non-contact power feeding system S is constructed by the plurality of power feeding devices 1. In other words, all the power feeding coils of the non-contact power feeding system S are shared by each power feeding device 1, and each power feeding device 1 controls the number of power feeding coils L1 to be shared. Accordingly, each power supply device 1 may be provided with the system linkage circuit 35 and the system control circuit 40 that are inexpensive with a small capacity corresponding to the number of the power supply coils L1 to be shared, and the non-contact power supply system S can be realized at a low cost as a whole. .

  (3) According to the present embodiment, each power feeding device 1 of the non-contact power feeding system S includes the system linkage circuit 35 and the first and second information input / output circuits 33 and 34. Each power feeding device 1 can share various information of other power feeding devices 1.

  Therefore, each power supply apparatus 1 does not operate independently, but can operate in cooperation with other power supply apparatuses 1 using these various types of information, and control using various information of other power supply apparatuses 1 Therefore, the non-contact power feeding system S having a wide application range can be realized.

  In particular, even if the other power supply device 1 is a power supply device that is configured with different parts and has different performances, these various pieces of information are used via the system linkage circuit 35 and the first and second information input / output circuits 33 and 34. Each power supply device 1 can be linked to unify performance.

  Further, since the power supply apparatus 1 is provided with the system linkage circuit 35 and the first and second information input / output circuits 33 and 34, it can be connected to a management apparatus for system inspection / management such as a personal computer. Therefore, initial setting / setting change (writing) and setting confirmation (reading) of various information such as parameters and identification information used in the system cooperation circuit 35, the system control circuit 40, etc. can be facilitated at the time of shipment or maintenance.

  That is, as shown in FIG. 16, for a plurality of power supply apparatuses 1 connected in a line type topology, a management apparatus PC for system inspection / management composed of a personal computer or the like is connected to the power supply apparatus 1 at one end thereof. Connect in a topology. Thereby, the initial setting / setting change (writing) and setting confirmation (reading) of the parameters and various information of the power supply devices 1 can be easily performed at the same time by the management device PC.

  Here, the parameters and various types of information include, for example, the identification information, address information, the number and number of turns of the feeding coil L1, the reference count value K1, the detection count value K3, etc. It is parameters and information necessary for each power supply apparatus 1 to operate in cooperation.

Therefore, in the non-contact power feeding system S, when the power feeding device 1 is increased or decreased, the management device PC can easily change the setting of parameters and various information for each power feeding device 1.
(4) According to the present embodiment, when the feeding coils L1 of the two feeding devices 1 cooperate to feed the power receiving device 2, the high-frequency currents that the two feeding devices 1 pass through the feeding coils L1 are: The high frequency current is synchronized with the same frequency. Therefore, cancellation of electromagnetic energy generated by the feeding coil L1 due to differences in feeding frequency, synchronization timing, and the like of the high-frequency current that each feeding device 1 energizes the feeding coil L1 due to individual differences or the like occurs. Rather, the power receiving device 2 is efficiently fed.

  In addition, it is possible to support the power receiving device 2 that supplies large electric power by simultaneously using all the power feeding devices 1 (three in FIG. 14 and FIG. 15) constituting the non-contact power feeding system S. At this time, since all the power feeding coils L1 are energized with a synchronized high frequency current having the same frequency, the power receiving device 2 is efficiently fed.

  (5) According to the present embodiment, the power supply apparatus 1 in the master mode outputs the power supply synchronization signal SYC to the power supply apparatus 1 in the slave mode (including the standby mode). In the power supply synchronization circuit 42, the power supply apparatus 1 in the slave mode obtains the correction count value K2 from the power supply synchronization signal SYC and the upper and lower drive signals PSa and PSb generated by its own reference clock signal CLK. In the power supply signal generation circuit 41, the power supply apparatus 1 in the slave mode is synchronized with the upper drive signal PSa and PSb on the upper side and the lower drive signals PSa and PSb of the power supply apparatus 1 in the master mode with the correction count value K2 and its own reference clock signal CLK. The lower drive signals PSa and PSb are generated.

  In other words, the slave mode power supply device 1 is synchronized with the upper and lower drive signals PSa and PSb of the master mode power supply device 1 simply by inputting the power supply synchronization signal SYC of the master mode power supply device 1. Side drive signals PSa and PSb were generated.

  Therefore, compared with the case where the upper and lower drive signals PSa and PSb of the power supply apparatus 1 in the master mode are directly output to the power supply apparatus 1 in the slave mode, the synchronization accuracy of the drive signals can be improved.

  (6) According to the present embodiment, when the power supply device 1 enters the standby mode, the power supply signal generation circuit 41 in advance is synchronized with the upper and lower drive signals PSa and PSb of the master mode power supply device 1 and Lower drive signals PSa and PSb were generated. When the power feeding device 1 is switched from the standby mode to the excitation mode, the synchronized upper and lower drive signals PSa and PSb can be immediately output to the power feeding circuit 31 of the power feeding coil L1.

Accordingly, the standby mode can be switched to the excitation mode, and the power feeding operation can be started in a short time. As a result, it is possible to prevent power interruption during the movement of the power receiving device 2.
(7) According to the present embodiment, the feed synchronization signal SYC is generated every second cycle of the upper and lower drive signals PSa and PSb. As a result, it is possible to generate the upper and lower drive signals PSa and PSb that are synchronized with the power supply apparatus 1 in the master mode without reducing accuracy, and to reduce the load on the system control circuit 40, the power supply synchronization circuit 42, and the like. Can do.
(Second Embodiment)
Next, 2nd Embodiment of the non-contact electric power feeding system S is described according to drawing.

  The present embodiment is different from the first embodiment in the circuit configuration of each power feeding device 1 constituting the non-contact power feeding system S. Therefore, in this embodiment, for convenience of explanation, a circuit configuration of the power feeding device 1 that constitutes the non-contact power feeding system S will be described.

  As shown in FIG. 17, the power supply apparatus 1 includes a system control circuit 40, a power supply signal generation circuit 41, a power supply synchronization circuit 42, and a power supply circuit 31 for each of the six power supply coils L <b> 1 (not shown in the figure). A system cooperation circuit 35 is provided.

  The six system cooperation circuits 35 provided in the power supply device 1 are connected in order from the leftmost system cooperation circuit 35 to the rightmost system cooperation circuit 35. Then, each of the six system cooperation circuits 35 exchanges the information signal D between the adjacent system cooperation circuits 35, and the information signal D of its own system cooperation circuit 35 or the information signal D of another system cooperation circuit 35. We are giving and receiving. Accordingly, the system cooperation circuits 35 are connected by a so-called line topology.

  The first information input / output circuit 33 is connected to the system linkage circuit 35 at the right end. In other words, the first information reception circuit 33a, the first information transmission circuit 33b, the first information storage circuit 33c, and the first noise removal circuit 33d are connected to the rightmost system cooperation circuit 35.

  Further, the second information input / output circuit 34 is connected to the leftmost system linkage circuit 35. That is, the second information reception circuit 34a, the second information transmission circuit 34b, the second information storage circuit 34c, and the second noise removal circuit 34d are connected to the leftmost system cooperation circuit 35.

  In the power supply device 1, the first information input / output circuit 33 is connected to the second information input / output circuit 34 of the right power supply device 1, and the information signal D is exchanged with the right power supply device 1. Similarly, in the power feeding device 1, the second information input / output circuit 34 is connected to the first information input / output circuit 33 of the left power feeding device 1, and the information signal D is exchanged with the left power feeding device 1. . Accordingly, the power supply apparatuses 1 are connected by a so-called line type topology.

(System linkage circuit 35)
Each system cooperation circuit 35 provided in the power supply apparatus 1 inputs data of the device detection result of the corresponding power supply coil L1 from the system control circuit 40. That is, each system cooperation circuit 35 is provided with a corresponding system control circuit 40, and detects the power receiving device 2 with respect to the power feeding coil L1 through which the power feeding circuit 31 to which the system control circuit 40 corresponds is energized. . Each system linkage circuit 35 outputs the device detection result data with identification information (address information) for identifying its own system linkage circuit 35 added thereto.

  The right system linkage circuit 35 inputs data of the device detection result of each feeding coil L1 of each feeding device 1 on the right side via the first information input / output circuit 33. Further, the left system linkage circuit 35 inputs data of the device detection result of each feeding coil L1 of each left feeding device 1 via the second information input / output circuit 34.

  Each system cooperation circuit 35 compares the data of its own device detection result with the data of the device detection result of each of the other feeding coils L1. Each system cooperation circuit 35 sets the system control circuit 40 to one of a master mode, a slave mode, and a sleep mode. At this time, the system cooperation circuit 35 also sets the system control circuit 40 to either the excitation mode or the standby mode.

(Master mode)
The system cooperation circuit 35 sets the system control circuit 40 to the master mode in the following two cases.

(1) When only the power feeding coil L1 of itself detects the power receiving device 2, the system linkage circuit 35 sets the system control circuit 40 to the master mode.
(2) When the power feeding coil L1 is detecting the power receiving device 2 and another power feeding coil L1 located on the right side of the power feeding coil L1 is continuously detecting the power receiving device 2 The system linkage circuit 35 sets the system control circuit 40 to the master mode.

Here, the other feeding coil L1 located on the right side may be the feeding coil L1 of the other feeding device 1 on the right side.
At this time, the system cooperation circuit 35 outputs information indicating that the system control circuit 40 is set to the master mode to other system cooperation circuits 35 (including the system cooperation circuits 35 of other power supply apparatuses 1).

(Slave mode)
The system cooperation circuit 35 sets the system control circuit 40 to the slave mode in the following cases.

  When the power supply coil L1 is detecting the power receiving device 2 and there is another system cooperation circuit 35 in the master mode, the system cooperation circuit 35 sets the system control circuit 40 to the slave mode.

  At this time, the system cooperation circuit 35 outputs information indicating that the system control circuit 40 is set to the slave mode to the other system cooperation circuit 35 (including the system cooperation circuit 35 of the other power supply apparatus 1).

(Standby mode)
The system cooperation circuit 35 sets the system control circuit 40 in the standby mode in the following cases.

  When its own power supply coil L1 is not detecting the power receiving device 2, and when the adjacent left or right power supply coil L1 is detecting the power receiving device 2, its own system linkage circuit 35 is a system control circuit. 40 is put into standby mode. Here, the adjacent left or right power supply coil L1 may be the power supply coil L1 of another power supply apparatus 1 on the adjacent left or right side.

  At this time, the system cooperation circuit 35 outputs information indicating that the system control circuit 40 is set to the standby mode to other system cooperation circuits 35 (including the system cooperation circuits 35 of other power supply apparatuses 1).

(sleep mode)
The system cooperation circuit 35 places the system control circuit 40 in the sleep mode in the following cases.

  When the power feeding coil L1 and the adjacent left and right power feeding coils L1 do not detect the power receiving device 2, the system cooperation circuit 35 places the system control circuit 40 in the sleep mode. Here, the adjacent left and right power supply coils L1 may be the power supply coils L1 of other power supply apparatuses 1 on the adjacent left or right side.

  At this time, the system cooperation circuit 35 outputs information indicating that the system control circuit 40 is set to the sleep mode to other system cooperation circuits 35 (including the system cooperation circuits 35 of other power supply apparatuses 1).

(System control circuit 40)
The system control circuit 40 provided for each system linkage circuit 35 controls only the corresponding power supply circuit 31. In addition, each system control circuit 40 performs detection of the power receiving device 2 on the power supply coil L1 that is energized by the corresponding power supply circuit 31 by the same method as in the first embodiment. Each system control circuit 40 outputs its own detection result to the system cooperation circuit 35.

Each system control circuit 40 is set to one of a master mode, a slave mode, a standby mode, and a sleep mode by the corresponding system cooperation circuit 35.
In the master mode, each system control circuit 40 outputs a 20 MHz reference clock signal CLK from the built-in oscillation circuit to the power supply signal generation circuit 41. Then, the system control circuit 40 causes the power supply signal generation circuit 41 to generate the upper and lower drive signals PSa and PSb based on its own reference clock signal CLK.

  In the master mode, the system control circuit 40 generates an H level enable signal EN for energizing the power feeding coil L <b> 1 and outputs the generated enable signal EN to the power feeding signal generation circuit 41. Accordingly, in the master mode, the power feeding circuit 31 is in the excitation mode.

  In the master mode, the system control circuit 40 causes the system cooperation circuit 35 to output the falling signals of the upper and lower drive signals PSa and PSb generated by the power supply signal generation circuit 41 as the power supply synchronization signal SYC. Yes. The power supply synchronization signal SYC input to the system cooperation circuit 35 is output to another system cooperation circuit 35 in the same power supply apparatus 1. Further, the power supply synchronization signal SYC input to the system cooperation circuit 35 is output to each system cooperation circuit 35 of another power supply apparatus 1.

  In the slave mode, the system control circuit 40 outputs a 20 MHz reference clock signal CLK from the built-in oscillation circuit to the power supply signal generation circuit 41. The system control circuit 40 supplies the upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb of the master mode system control circuit 40 using its own reference clock signal CLK. The signal generation circuit 41 generates the signal.

  In the slave mode, the system control circuit 40 generates an H level enable signal EN for energizing the power feeding coil L <b> 1 and outputs it to the power feeding signal generation circuit 41. Accordingly, in the slave mode, the power feeding circuit 31 is in the excitation mode.

  In the standby mode, the system control circuit 40 outputs a 20 MHz reference clock signal CLK from the built-in oscillation circuit to the power supply signal generation circuit 41. The system control circuit 40 supplies the upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb of the master mode system control circuit 40 using its own reference clock signal CLK. The signal generation circuit 41 generates the signal.

Further, in the standby mode, the system control circuit 40 generates an L level enable signal EN for deenergizing the power feeding coil L1 and outputs it to the power feeding signal generating circuit 41.
In the sleep mode, the system control circuit 40 outputs a 20 MHz reference clock signal CLK from the built-in oscillation circuit to the power supply signal generation circuit 41. Then, the system control circuit 40 uses the own reference clock signal CLK to generate the upper and lower drive signals PSa and PSb for device detection in the own power supply signal generation circuit 41.

  In the sleep mode, the system control circuit 40 generates an H-level enable signal EN for energizing the power feeding coil L1 for device detection and outputs the generated enable signal EN to the power feeding signal generation circuit 41.

(Power supply signal generation circuit 41)
Each power supply signal generation circuit 41 provided for each power supply circuit 31 operates differently depending on the mode of the corresponding system control circuit 40, as in the first embodiment.

  Each power supply signal generation circuit 41 counts the reference clock signal CLK from the system control circuit 40 when the corresponding system control circuit 40 is in the master mode, and the upper and lower drive signals PSa, PSb based on the reference count value K1. Is generated. That is, in the master mode, each power supply signal generation circuit 41 generates the upper and lower drive signals PSa and PSb based on the reference count value K1 that the power supply signal generation circuit 41 has.

  Each power supply signal generation circuit 41 counts the reference clock signal CLK from the system control circuit 40 when the corresponding system control circuit 40 is in the slave mode, and the upper and lower drive signals PSa, PSb is generated. That is, in the slave mode, the power supply signal generation circuit 41 generates the upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb of the master mode power supply signal generation circuit 41.

  Each power supply signal generation circuit 41 outputs the upper and lower drive signals PSa and PSb generated in the slave mode to the corresponding power supply synchronization circuit 42. Then, the power feeding synchronization circuit 42 generates the correction count value K2 with the power feeding synchronization signal SYC from the system control circuit 40 in the master mode.

  Further, each power supply signal generation circuit 41 counts the reference clock signal CLK from the system control circuit 40 when the corresponding system control circuit 40 is in the sleep mode, and detects the upper and lower sides for detection based on the detection count value K3. Side drive signals PSa and PSb are generated. That is, in the sleep mode, the power supply signal generation circuit 41 generates the upper and lower drive signals PSa and PSb for device detection based on the detection count value K3 that the power supply signal generation circuit 41 has.

  Each power supply signal generation circuit 41 is provided with one gate circuit 44 corresponding to one corresponding power supply circuit 31 as in the first embodiment. Each power supply signal generation circuit 41 outputs the upper and lower drive signals PSa and PSb generated in the master mode, slave mode, and sleep mode to the power supply circuit 31 via the gate circuit 44.

  In the system control circuit 40 in the master mode, the H level enable signal EN is output to the gate circuit 44, and the upper and lower drive signals PSa and PSb are output to the power feeding circuit 31. Similarly, in the slave mode system control circuit 40, an H level enable signal EN is output to the gate circuit 44, and the upper and lower drive signals PSa and PSb are output to the power feeding circuit 31. Further, in the system control circuit 40 in the sleep mode, the H level enable signal EN is output to the gate circuit 44, and the upper and lower drive signals PSa and PSb for device detection are output to the power supply circuit 31.

  On the other hand, in the system control circuit 40 in the standby mode, the L level enable signal EN is output to the gate circuit 44, and the upper and lower drive signals PSa and PSb are not output to the power supply circuit 31.

(Feeding synchronization circuit 42)
Similarly to the first embodiment, each power feeding synchronization circuit 42 generates the correction count value K2 when the corresponding system control circuit 40 is in the slave mode or the standby mode, as in the first embodiment. The power is output to the power supply signal generation circuit 41. In other words, each power supply synchronization circuit 42 is synchronized with the upper and lower drive signals PSa and PSb of other system control circuits 40 in which the corresponding power supply signal generation circuit 41 is in the master mode. A correction count value K2 for generating PSb is generated.

  As a result, in one or a plurality of power supply apparatuses 1, one or more slave mode power supply circuits 31 include upper and lower drive signals PSa and PSb input to the master mode power supply circuit 31. Lower drive signals PSa and PSb are input.

  As a result, in one power feeding device 1, when the power feeding coil L <b> 1 in the master mode and one or more power feeding coils L <b> 1 in the slave mode cooperate to feed the power receiving device 2, the electromagnetic energy of both the power feeding coils L <b> 1 cancel each other. Does not occur, and the power receiving device 2 is efficiently fed.

  Similarly, in a plurality of power supply apparatuses 1, when the power supply coil L <b> 1 in the master mode and the power supply coils L <b> 1 in the slave mode cooperate to supply power to the power reception apparatus 2, the electromagnetic energy of both power supply coils L <b> 1 is canceled out. There is no match. As a result, the power receiving device 2 is efficiently fed.

Next, the operation of the non-contact power feeding system S configured as described above will be described.
18 and 19 are schematic diagrams of a plurality of power feeding devices 1 and power receiving devices 2 arranged in one direction for easily understanding the operation. For ease of explanation, the number of power supply devices 1 is three.

  Now, as shown in FIG. 18A, the power receiving device 2 is in a state of being disconnected from the three power feeding devices 1. In this state, when power is supplied to the three power supply devices 1 all at once, each of the six system control circuits 40 of the three power supply devices 1 has the power receiving device 2 arranged oppositely on the power supply coil L1. Please start the device detection process.

  Each system control circuit 40 of each power supply apparatus 1 uses the detection count value K3 to the power supply signal generation circuit 41 to supply an upper and lower drive signal for supplying a high-frequency current having a detection frequency to the power supply coil L1. PSa and PSb are generated. Accordingly, the six feeding coils L1 of each power feeding device 1 are energized with a high-frequency current having a detection frequency, and device detection of the power receiving device 2 is started.

  In the state shown in FIG. 18A, each power supply coil L1 of each power supply apparatus 1 is not opposed to the power reception apparatus 2, and therefore the six system control circuits 40 of each power supply apparatus 1 have corresponding power supply coils. It is determined that L1 has not detected the power receiving device 2.

  And each system control circuit 40 of each electric power feeder 1 outputs an apparatus detection result to the own system cooperation circuit 35, respectively. The system cooperation circuit 35 outputs the device detection result to each of the other system cooperation circuits 35 in the same power supply apparatus 1. In addition, the system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of the other power supply apparatus 1.

  Next, when the power receiving device 2 is moved and arranged from the position shown in FIG. 18A to the position shown in FIG. 18B, the six system control circuits 40 of the left power feeding device 1 are configured so that the power feeding coil L1 is the power receiving device 2. Is determined to be detected. Then, each system control circuit 40 of the left power supply apparatus 1 outputs the device detection result to its own system cooperation circuit 35. Each system cooperation circuit 35 outputs the device detection result to another system cooperation circuit 35 in the same power supply apparatus 1. In addition, each system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of another power supply apparatus 1.

  On the other hand, the central and right power supply devices 1 each determine that all six power supply coils L1 have not detected the power reception device 2. Then, each system control circuit 40 of the central and right power supply apparatus 1 outputs the device detection result to its own system cooperation circuit 35. Each system cooperation circuit 35 outputs the device detection result to another system cooperation circuit 35 in the same power supply apparatus 1. In addition, each system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of another power supply apparatus 1.

  As a result, the leftmost system control circuit 40 of the left power supply apparatus 1 is in the master mode. In addition, the five system control circuits 40 except for the leftmost system control circuit 40 that is in the master mode in the left power supply apparatus 1 are in the slave mode.

  Furthermore, the system control circuit 40 at the left end of the central power supply apparatus 1 is in a standby mode. Further, the five system control circuits 40 other than the leftmost system control circuit 40 which is the central power supply apparatus 1 and is in the standby mode are in the sleep mode.

Furthermore, all six 40 of the right power supply apparatus 1 are in the sleep mode.
The mode data of the system control circuit 40 set by the other system cooperation circuits 35 is output to all six system cooperation circuits 35 of each power supply apparatus 1.

  The system control circuit 40 in the master mode uses the reference count value K1 for the power supply signal generation circuit 41 to supply the upper and lower drive signals PSa and PSb for supplying a high frequency current of the power supply frequency to the power supply coil L1. Is generated. As a result, the left end feeding coil L <b> 1 of the left feeding device 1 is supplied with a high-frequency current having a feeding frequency to feed power to the power receiving device 2.

At this time, the system control circuit 40 in the master mode outputs the power feeding synchronization signal SYC to the system control circuit 40 in the slave and standby modes.
Then, the system control circuit 40 in the slave and standby modes generates the respective correction count values K2 in the respective power feeding synchronization circuits 42 and outputs the correction count values K2 to the respective power feeding signal generation circuits 41. Each power supply signal generation circuit 41 generates the upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb in the master mode using the correction count value K2.

  At this time, the system control circuit 40 in the slave mode outputs the H level enable signal EN to the gate circuit 44 of the power supply signal generation circuit 41, so that the upper and lower drive signals PSa generated by the power supply signal generation circuit 41 are output. , PSb are output to the power feeding circuit 31. As a result, a high-frequency current having a power supply frequency is supplied to the power supply coil L1 in the slave mode.

  Therefore, even if the six power supply coils L1 cooperate to supply power to the power receiving device 2, the power supply frequencies of the high-frequency currents supplied to the power supply coils L1 are the same and in phase. As a result, there is no cancellation of electromagnetic energy generated by each power feeding coil L1, and the power receiving device 2 is efficiently fed.

In this state, the power supply coil L1 in the master mode and the slave mode detects the power receiving device 2.
On the other hand, the system control circuit 40 in the standby mode outputs the L level enable signal EN to the gate circuit 44 of the power supply signal generation circuit 41, and thus the upper and lower drive signals PSa and PSb generated by the power supply signal generation circuit 41. Is not output to the power feeding circuit 31. As a result, the high-frequency current of the power supply frequency is not supplied to the power supply coil L1 in the standby mode. In this state, the power supply coil L1 in the standby mode detects the power receiving device 2.

  Next, when the power receiving device 2 is moved and arranged from the position shown in FIG. 18B to FIG. 18C, the left power feeding device 1 detects the power receiving device 2 by the three power feeding coils L1 on the right side. It is determined that the three power supply coils L1 on the left side have not detected the power receiving device 2. Each system control circuit 40 of the power supply device 1 on the left side outputs the device detection result to each system cooperation circuit 35. Each system linkage circuit 35 outputs the device detection result to another system control circuit 40 on the left power supply apparatus 1. Further, each system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of the central and right power supply apparatus 1.

  Further, the central power feeding device 1 determines that the three power feeding coils L1 on the left side detect the power receiving device 2 and the three power feeding coils L1 on the right side do not detect the power receiving device 2. Each system control circuit 40 of the central power feeding device 1 outputs the device detection result to each system cooperation circuit 35. Each system cooperation circuit 35 outputs the device detection result to another system cooperation circuit 35 of the central power supply apparatus 1. Furthermore, each system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of the left and right power supply apparatuses 1.

  Furthermore, the right power supply apparatus 1 determines that all six power supply coils L1 have not detected the power reception apparatus 2. Each system control circuit 40 of the right power supply apparatus 1 outputs the device detection result to each system cooperation circuit 35. Each system cooperation circuit 35 outputs the device detection result to another system cooperation circuit 35 on the right power supply apparatus 1. Further, each system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of the power supply apparatus 1 on the left side and the center.

  At this time, the fourth system control circuit 40 on the left side of the left power supply apparatus 1 is in the master mode. Further, the fifth and sixth system control circuits 40 on the left side of the left power supply apparatus 1 remain in the slave mode. Further, the third system control circuit 40 on the left side of the left power supply apparatus 1 is in the standby mode. Furthermore, the first and second system control circuits 40 on the left side of the left power supply device 1 are in the sleep mode.

  On the other hand, the three system control circuits 40 on the left side of the central power supply apparatus 1 are in the slave mode. In addition, the fourth system control circuit 40 on the left side of the central power supply apparatus 1 is in a standby mode. Further, the fifth and sixth system control circuits 40 on the left side of the central power supply apparatus 1 are in the sleep mode. Incidentally, all the system control circuits 40 of the right power supply apparatus 1 are in the sleep mode.

  The fourth system control circuit 40 on the left side of the left power supply apparatus 1 in the master mode supplies a high frequency current of a power supply frequency to the power supply coil L1 to the power supply signal generation circuit 41 using the reference count value K1. Therefore, the upper and lower drive signals PSa and PSb are generated. Then, the system control circuit 40 in the master mode energizes the feeding coil L1 using the upper and lower drive signals PSa and PSb.

  At this time, the system control circuit 40 in the master mode outputs the power feeding synchronization signal SYC to the system control circuit 40 in the slave and standby modes. The system control circuit 40 to which the power supply synchronization signal SYC is input uses the correction count value K2 in each power supply signal generation circuit 41 to synchronize with the upper and lower drive signals PSa and PSb in the master mode. Signals PSa and PSb are generated.

  Then, the five system control circuits 40 in the slave mode energize the respective feeding coils L1 using the upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb in the master mode. To do.

  In addition, the two system control circuits 40 in the standby mode generate respective upper and lower drive signals PSa and PSb that are synchronized with the upper and lower drive signals PSa and PSb in the master mode. Turn off the power.

  Therefore, even if the six power supply coils L1 cooperate to supply power to the power receiving device 2, the power supply frequencies of the high-frequency currents supplied to the power supply coils L1 are the same and in phase. As a result, there is no cancellation of electromagnetic energy generated by each power feeding coil L1, and the power receiving device 2 is efficiently fed.

  Next, when the power receiving device 2 is moved and arranged from the position shown in FIG. 18C to the position shown in FIG. 19A, all the system control circuits 40 of the central power feeding device 1 have the power feeding coil L1 connected to the power receiving device 2. It is determined that the device is detected, and the device detection result is output to each system cooperation circuit 35. Each system cooperation circuit 35 outputs the device detection result to another system cooperation circuit 35 of the central power supply apparatus 1. Furthermore, each system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of the left and right power supply apparatuses 1.

  Further, the left power supply apparatus 1 determines that all six power supply coils L1 have not detected the power reception apparatus 2. Each system control circuit 40 of the power supply device 1 on the left side outputs the device detection result to each system cooperation circuit 35. Each system linkage circuit 35 outputs the device detection result to another system linkage circuit 35 on the left power supply device 1. Further, each system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of the central and right power supply apparatus 1.

  Furthermore, the right power supply apparatus 1 determines that all six power supply coils L1 have not detected the power reception apparatus 2. Each system control circuit 40 of the right power supply apparatus 1 outputs the device detection result to each system cooperation circuit 35. Each system cooperation circuit 35 outputs the device detection result to another system cooperation circuit 35 on the right power supply apparatus 1. Further, each system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of the power supply apparatus 1 on the left side and the center.

  At this time, the first system control circuit 40 on the left side of the central power supply apparatus 1 is in the master mode. Further, the second to sixth system control circuits 40 on the left side of the central power supply apparatus 1 remain in the slave mode.

  On the other hand, the first system control circuit 40 on the left side of the right power supply apparatus 1 is in the standby mode. Further, the second to sixth system control circuits 40 on the left side of the right power supply apparatus 1 are in the sleep mode.

  Then, the sixth system control circuit 40 on the left side of the left power supply apparatus 1 is in the standby mode. Further, the first to fifth system control circuits 40 on the left side of the left power supply apparatus 1 are in the sleep mode.

  The first system control circuit 40 on the left side of the central power supply apparatus 1 in the master mode supplies a high-frequency current of a power supply frequency to the power supply coil L1 to the power supply signal generation circuit 41 using the reference count value K1. Therefore, the upper and lower drive signals PSa and PSb are generated. Then, the system control circuit 40 in the master mode energizes the feeding coil L1 using the upper and lower drive signals PSa and PSb.

  At this time, the system control circuit 40 in the master mode outputs the power feeding synchronization signal SYC to the system control circuit 40 in the slave mode and the standby mode. The system control circuit 40 to which the power supply synchronization signal SYC is input uses the correction count value K2 in each power supply signal generation circuit 41 to synchronize with the upper and lower drive signals PSa and PSb in the master mode. Signals PSa and PSb are generated.

  Then, the five system control circuits 40 in the slave mode energize the respective feeding coils L1 using the upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb in the master mode. To do.

  In addition, the two system control circuits 40 in the standby mode generate respective upper and lower drive signals PSa and PSb that are synchronized with the upper and lower drive signals PSa and PSb in the master mode. Turn off the power.

  Therefore, even if the six power supply coils L1 cooperate to supply power to the power receiving device 2, the power supply frequencies of the high-frequency currents supplied to the power supply coils L1 are the same and in phase. As a result, there is no cancellation of electromagnetic energy generated by each power feeding coil L1, and the power receiving device 2 is efficiently fed.

  Next, when the power receiving device 2 is moved and arranged from the position shown in FIG. 19A to FIG. 19B, the right power feeding device 1 detects the power receiving device 2 by the right three power feeding coils L1, and the left side. It is determined that the three power supply coils L1 do not detect the power receiving device 2. Each system control circuit 40 of the right power supply apparatus 1 outputs the device detection result to each system cooperation circuit 35. Each system cooperation circuit 35 outputs the device detection result to another system cooperation circuit 35 on the right power supply apparatus 1. Further, each system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of the power supply apparatus 1 on the left side and the center.

  Further, the central power feeding device 1 determines that the right three feeding coils L1 detect the power receiving device 2 and the left three feeding coils L1 do not detect the power receiving device 2. Each system control circuit 40 of the central power feeding device 1 outputs the device detection result to each system cooperation circuit 35. Each system cooperation circuit 35 outputs the device detection result to another system cooperation circuit 35 of the central power supply apparatus 1. Furthermore, each system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of the left and right power supply apparatuses 1.

  Furthermore, the left power supply apparatus 1 determines that all six power supply coils L1 have not detected the power reception apparatus 2. Each system control circuit 40 of the power supply device 1 on the left side outputs the device detection result to each system cooperation circuit 35. The system cooperation circuit 35 outputs the device detection result to another system cooperation circuit 35 on the left power supply device 1. Further, the system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of the central and right power supply apparatus 1.

  At this time, the fourth system control circuit 40 on the left side of the central power supply apparatus 1 is in the master mode. Further, the fifth and sixth system control circuits 40 on the left side of the central power feeding device 1 remain in the slave mode. Further, the third system control circuit 40 on the left side of the central power supply apparatus 1 is in a standby mode. Furthermore, the first and second system control circuits 40 on the left side of the central power supply apparatus 1 are in the sleep mode.

  On the other hand, the three system control circuits 40 on the left side of the right power supply apparatus 1 are in the slave mode. Further, the fourth system control circuit 40 on the left side of the right power supply apparatus 1 is in the standby mode. Further, the fifth and sixth system control circuits 40 on the left side of the right power supply apparatus 1 are in the sleep mode. Incidentally, all the system control circuits 40 of the left power supply apparatus 1 are in the sleep mode.

  The fourth system control circuit 40 on the left side of the left power supply apparatus 1 in the master mode supplies a high frequency current of a power supply frequency to the power supply coil L1 to the power supply signal generation circuit 41 using the reference count value K1. Therefore, the upper and lower drive signals PSa and PSb are generated. Then, the system control circuit 40 in the master mode energizes the feeding coil L1 using the upper and lower drive signals PSa and PSb.

  At this time, the system control circuit 40 in the master mode outputs the power feeding synchronization signal SYC to the system control circuit 40 in the slave mode and the standby mode. The system control circuit 40 to which the power supply synchronization signal SYC is input uses the correction count value K2 in each power supply signal generation circuit 41 to synchronize with the upper and lower drive signals PSa and PSb in the master mode. Signals PSa and PSb are generated.

  Then, the five system control circuits 40 in the slave mode energize the respective feeding coils L1 using the upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb in the master mode. To do.

  In addition, the two system control circuits 40 in the standby mode generate respective upper and lower drive signals PSa and PSb that are synchronized with the upper and lower drive signals PSa and PSb in the master mode. Turn off the power.

  Therefore, even if the six power supply coils L1 cooperate to supply power to the power receiving device 2, the power supply frequencies of the high-frequency currents supplied to the power supply coils L1 are the same and in phase. As a result, there is no cancellation of electromagnetic energy generated by each power feeding coil L1, and the power receiving device 2 is efficiently fed.

  Next, when the power receiving device 2 is moved and arranged from the position shown in FIG. 19B to the position shown in FIG. 19C, all the system control circuits 40 of the right power feeding device 1 have the power feeding coil L1 connected to the power receiving device 2. It is determined that the device is detected, and the device detection result is output to each system cooperation circuit 35. Each system cooperation circuit 35 outputs the device detection result to another system cooperation circuit 35 on the right power supply apparatus 1. Further, each system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of the power supply apparatus 1 on the left side and the center.

  Further, the central power feeding device 1 determines that all six power feeding coils L1 have not detected the power receiving device 2. Each system control circuit 40 of the central power feeding device 1 outputs the device detection result to each system cooperation circuit 35. Each system cooperation circuit 35 outputs the device detection result to another system cooperation circuit 35 of the central power supply apparatus 1. Furthermore, each system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of the left and right power supply apparatuses 1.

  Furthermore, the left power supply apparatus 1 determines that all six power supply coils L1 have not detected the power reception apparatus 2. Each system control circuit 40 of the power supply device 1 on the left side outputs the device detection result to each system cooperation circuit 35. Each system linkage circuit 35 outputs the device detection result to another system linkage circuit 35 on the left power supply device 1. Further, each system cooperation circuit 35 outputs the device detection result to each system cooperation circuit 35 of the central and right power supply apparatus 1.

  At this time, the first system control circuit 40 on the left side of the right power supply apparatus 1 is in the master mode. In addition, the second to sixth system control circuits 40 on the left side of the right power supply apparatus 1 are in the slave mode.

  On the other hand, the sixth system control circuit 40 on the left side of the central power supply apparatus 1 is in the standby mode. In addition, the first to fifth system control circuits 40 on the left side of the central power supply device 1 are in the sleep mode. Then, the sixth system control circuit 40 on the left side of the left power supply apparatus 1 is in the sleep mode.

  The first system control circuit 40 on the left side of the right power supply apparatus 1 in the master mode supplies a high frequency current of a power supply frequency to the power supply coil L1 to the power supply signal generation circuit 41 using the reference count value K1. Therefore, the upper and lower drive signals PSa and PSb are generated. Then, the system control circuit 40 in the master mode energizes the feeding coil L1 using the upper and lower drive signals PSa and PSb.

  At this time, the system control circuit 40 in the master mode outputs the power feeding synchronization signal SYC to the system control circuit 40 in the slave mode and the standby mode. The system control circuit 40 to which the power supply synchronization signal SYC is input uses the correction count value K2 in each power supply signal generation circuit 41 to synchronize with the upper and lower drive signals PSa and PSb in the master mode. Signals PSa and PSb are generated.

  Then, the five system control circuits 40 in the slave mode energize the respective feeding coils L1 using the upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb in the master mode. To do.

  In addition, one system control circuit 40 in the standby mode generates the upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb in the master mode. Turn off the power.

  Therefore, even if the six power supply coils L1 cooperate to supply power to the power receiving device 2, the power supply frequencies of the high-frequency currents supplied to the power supply coils L1 are the same and in phase. As a result, there is no cancellation of electromagnetic energy generated by each power feeding coil L1, and the power receiving device 2 is efficiently fed.

Next, effects of the second embodiment will be described. The effects of the second embodiment have the following effects in addition to the effects of the first embodiment.
(1) According to the present embodiment, in the power feeding device 1 having the plurality of power feeding coils L1, the system cooperation circuit 35 and the system control circuit 40 are provided for each power feeding coil L1.

  Therefore, since the system cooperation circuit 35 and the system control circuit 40 need only control one power supply coil L1, it can be realized by an inexpensive semiconductor integrated circuit device having a minimum unit function. As a result, since a single power supply device 1 can be manufactured using a plurality of inexpensive semiconductor integrated circuit devices with the minimum unit function, an inexpensive non-contact power supply system S can be realized.

  (2) One system linkage circuit 35 and system control circuit 40 are provided for one power supply coil L1. In other words, since one system cooperation circuit 35 and system control circuit 40 share one power supply coil L1, it is possible to use the system cooperation circuit 35 and system control circuit 40 without waste.

  (3) Moreover, since one system linkage circuit 35 and system control circuit 40 are provided for one power supply coil L1, the power supply device 1 having a different number of power supply coils L1 can be easily designed and manufactured at low cost.

  That is, for example, when one system cooperation circuit 35 and the system control circuit 40 are the power supply apparatus 1 that shares a plurality of power supply coils L1, the system cooperation circuit 35 and the system control having the capability according to the number of power supply coils L1. It is necessary to provide the circuit 40. As a result, the system cooperation circuit 35 and the system control circuit 40 must be prepared in a number corresponding to the number of the feeding coils L1, and the component management becomes complicated.

  Although it is conceivable to use the system linkage circuit 35 and the system control circuit 40 having a large capacity in advance, the capability of the expensive system linkage circuit 35 and the system control circuit 40 cannot be exhibited, resulting in useless use.

In addition, you may change the said embodiment as follows.
In the above-described embodiment, the power supply devices 1 are adjacent to each other and are the non-contact power supply system S, but may be applied to a non-contact power supply device system in which the individual power supply devices 1 are individually separated.

  In this case, the power supply device 1 and the power supply device 1 are too far apart, and a non-contact power supply system S that cannot supply power cooperatively to one power receiving device 2 may be constructed. In this case, the first and second information input / output circuits 33 and 34 and the system cooperation circuit 35 of each power supply device 1 are simultaneously set by the management device PC as shown in FIG. It can be used when initial setting / setting change and setting confirmation of various information.

  In the above embodiments, the upper and lower drive signals PSa and PSb are generated using a preset reference count value K1. Alternatively, the frequency of the upper and lower drive signals PSa and PSb may be controlled by changing the value of the reference count value K1 in accordance with the change in the resonance point with the power receiving coil L2 of the power receiving device 2.

  For example, when the power receiving coil L2 of the power receiving device 2 faces the power feeding coil L1 at the right end of the power feeding device 1 in the master mode and the power feeding coil L1 at the left end of the slave mode, the power feeding at the right end of the power feeding device 1 in the master mode is opposed. The resonance point between the coil L1 and the power receiving coil L2 of the power receiving device 2 changes. This change in the resonance point causes the resonance between the power feeding coil L1 and the power receiving coil L2 to be lost, leading to a decrease in power receiving efficiency. Therefore, in order to maintain the power reception efficiency, the value of the reference count value K1 is changed to control the frequencies of the upper and lower drive signals PSa and PSb, so that the power feeding coil L1 and the power receiving coil L2 are brought into resonance.

  Specifically, the voltage between the terminals of the feeding coil L1 at the right end of the power feeding device 1 in the master mode is detected, and the decrease in the voltage between the terminals based on the resonance between the feeding coil L1 and the receiving coil L2 is reduced. The reference count value K1 is changed in order to obtain a voltage between terminals. That is, the reference count value K1 is changed to generate the upper and lower drive signals PSa and PSb of the frequency number at which the feeding coil L1 and the receiving coil L2 resonate.

  In each of the embodiments described above, the power supply signal generation circuit 41 in the slave mode generates the upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb in the master mode, It was made to output to 31.

  In addition, under the control of the system control circuit 40, the upper and lower drive signals PSa and PSb synchronized with the upper and lower drive signals PSa and PSb in the master mode generated by the power supply signal generation circuit 41 in the slave mode. The phase may be varied and output to its own power supply circuit 31.

  In other words, the polarity of the power supply circuit 31 connected to the power supply coil L1 in the master mode may be opposite to the polarity of the power supply circuit 31 connected to the power supply coil L1 in the slave mode.

  At this time, when the upper and lower drive signals PSa and PSb in the master mode and the slave mode are in phase, the direction of the magnetic flux generated by the power supply coil L1 in the master mode and the direction of the magnetic flux generated by the power supply coil L1 in the slave mode And vice versa. As a result, cancellation of electromagnetic energy occurs, and power cannot be supplied to the power receiving device 2 in cooperation.

  Therefore, the power supply signal generation circuit 41 in the slave mode generates the upper and lower drive signals PSa and PSb that are 180 degrees out of phase with respect to the upper and lower drive signals PSa and PSb of the master. As a result, the direction of the magnetic flux generated by the power supply coil L1 in the master mode and the direction of the magnetic flux generated by the power supply coil L1 in the slave mode become the same, and there is no cancellation of electromagnetic energy. Power can be supplied efficiently.

  In this case, it is performed based on the phase designation information stored in the storage circuit of the system control circuit 40. For example, in the case of the above example, the phase designation information is information for changing the phase by 180 degrees with respect to the upper and lower drive signals PSa and PSb of the adjacent power feeding devices 1. At this time, the power supply signal generation circuit 41 in the slave mode is based on the phase designation information from the system control circuit 40, and the upper and lower drive signals PSa and PSb in the master mode are shifted in phase by 180 degrees. Lower drive signals PSa and PSb are generated.

  Incidentally, the phase designation information is stored in the storage circuit of the system control circuit 40 of the corresponding power supply apparatus 1 when the initial setting is performed in advance using the management apparatus PC, for example. That is, the system control circuit 40 of each power supply apparatus 1 stores phase designation information indicating whether to change the phase with respect to the upper and lower drive signals PSa and PSb from the other power supply apparatuses 1.

  Accordingly, even after a plurality of power supply devices 1 are connected, even if a power supply device 1 having a polarity different from that of the power supply circuit 31 to which the power supply coil L1 is connected is included, the power supply device 1 is replaced only by setting the phase designation information. There is no need. As a result, the non-contact power feeding system S can be constructed without being conscious of the polarity of the power feeding coil L1 of the power feeding device 1 at the beginning.

Note that the phase designation information is not limited to information in which the phase is shifted by 180 degrees with respect to the upper and lower drive signals PSa and PSb in the master mode.
For example, for one of the power supply devices 1, even if the polarity of the power supply coil L <b> 1 is the same as that of the power supply device 1, the shape of the power supply coil L <b> 1 is different from that of the other power supply coils L <b> 1. There is a case.

That is, in the adjacent power supply apparatus 1, the power supply coil L1 of one power supply apparatus 1 and the power supply coil L1 of the other power supply apparatus 1 may be wound around cores having different shapes.
At this time, even if the upper and lower drive signals PSa and PSb have the same phase and are output to the respective power feeding circuits 31, the phase of the magnetic flux generated by the power feeding coil L <b> 1 of one power feeding device 1 and the other power feeding device 1. The phase of the magnetic flux generated by the feeding coil L1 is shifted by these different forms of cores and does not match. As a result, it is not possible to efficiently supply power to the power receiving device 2.

Therefore, phase designation information for making the phase of the magnetic flux generated by the power supply coil L1 of one power supply device 1 coincide with the phase of the magnetic flux generated by the power supply coil L1 of the other power supply device 1 is stored.
That is, the system control circuit 40 of each power supply apparatus 1 uses the management apparatus PC to change whether or not to change the phase with respect to the upper and lower drive signals PSa and PSb from the other power supply apparatuses 1. In this case, phase designation information indicating how many times the phase is shifted is stored in advance.

As a result, even when power feeding devices 1 of different types of power feeding coils L1 are mixed, the power receiving device 2 can be efficiently fed in cooperation.
In the first embodiment, as one of the requirements for becoming the master mode, when the other power feeding device 1 located on the right side with the power feeding device 1 detects the power receiving device 2, the power feeding device 1 The system control circuit 40 is set to the master mode.

  When the other power feeding device 1 located on the left side with the power feeding device 1 detects the power receiving device 2, the system control circuit 40 of the other power feeding device 1 located on the left side is set to the master mode. May be. Further, when the power receiving device 2 is disposed across the two power feeding devices 1 and the two power feeding devices 1 cooperate to feed power, the power feeding device having the larger number of feeding coils L1 in the excitation mode. One system control circuit 40 may be set to the master mode.

  In the second embodiment, as one of the requirements for becoming the master mode, when the other power supply coil L1 located on the right side together with its own power supply coil L1 detects the power receiving device 2, the power supply coil L1 The system control circuit 40 is set to the master mode.

  When the other power supply coil L1 located on the left side with the power supply device 1 detects the power reception device 2, the system control circuit 40 of the other power supply coil L1 located on the left side is set to the master mode. May be.

Further, when there is a power feeding coil L1 in a plurality of excitation modes, for example, the system control circuit 40 of the power feeding coil L1 located at the center may be set to the master mode.
Furthermore, when the power receiving device 2 is disposed across the two power feeding devices 1 and the power feeding coils L1 of the two power feeding devices 1 cooperate to feed power, the number of the power feeding coils L1 in the excitation mode is large. Any one system control circuit 40 of the power supply apparatus 1 may be set to the master mode.

Furthermore, in the second embodiment, the number of system control circuits 40 (feeding coils L1) that enter the standby mode is one, but a plurality of system control circuits 40 (feeding coils L1) may be implemented.
In each of the above embodiments, each power feeding device 1 energizes the feeding coil L1 with a high frequency current for detection when the system control circuit 40 enters the sleep mode. You may implement. In this case, the system control circuit 40 may suspend the operation of the power supply signal generation circuit 41 or control the enable signal EN to the power supply signal generation circuit 41. Thereby, the power consumption of the constructed non-contact power feeding system S can be reduced.

  In each of the above embodiments, the device detection of the power receiving device 2 is performed based on the output voltage relative to the current flowing through the feeding coil L1, but the device detection may be performed by another method. For example, a dedicated device detection antenna coil may be provided in the proximity of each power supply coil L1, and device detection may be performed by a known method.

In the first embodiment, the number of the feeding coils L1 provided in the feeding device 1 is six, but the number is not limited. Therefore, the present invention may be applied to a number of power feeding devices other than six.
Therefore, as shown in FIG. 20, the non-contact power feeding system S may be configured by the power feeding device 1 having only one power feeding coil L1.

Similarly, the second embodiment may be applied to the number of power feeding devices 1 other than six.
Of course, in the first embodiment and the second embodiment, the non-contact power feeding system S may be configured by appropriately connecting power feeding devices 1 having different numbers of power feeding coils L1.

Furthermore, the non-contact power feeding system S may be constructed by mixing (appropriately combining) the power feeding device 1 having the circuit configuration shown in the first embodiment and the power feeding device 1 having the circuit configuration shown in the second embodiment.
In each embodiment described above, a plurality of power feeding devices 1 may be configured as one power feeding device 1. And the non-contact electric power feeding system S may be constructed | assembled by arrange | positioning the one electric power feeder 1 plurally.

  In each of the above embodiments, power is supplied to one power receiving device 2 in the non-contact power feeding system S including a plurality of power feeding devices 1. However, the present invention is not limited to this. Of course, power may be supplied to the device 2 at the same time.

  In this case, for example, when the two power receiving devices 2 are respectively disposed on the power feeding device 1 with the power feeding device 1 in the sleep mode interposed therebetween, the non-contact power feeding system S has two power receiving devices 2 respectively. An independent master mode power supply apparatus 1 is set. Then, the two power receiving devices 2 receive power from each power feeding device 1.

  In each of the above embodiments, the system control circuit 40, the power supply signal generation circuit 41, and the power supply synchronization circuit 42 may be implemented with a single microcomputer. Further, only the system control circuit 40 may be implemented by a microcomputer.

  Further, the system cooperation circuit 35 and the first and second information input / output circuits 33 and 34 may be implemented by a single microcomputer. Further, only the system linkage circuit 35 may be implemented by a microcomputer.

  Furthermore, the system cooperation circuit 35, the first and second information input / output circuits 33 and 34, the system control circuit 40, the power supply signal generation circuit 41, and the power supply synchronization circuit 42 may be implemented by a single microcomputer. Of course, the system control circuit 40 and the system linkage circuit 35 may be implemented by a single microcomputer.

  In each of the above embodiments, the feed synchronization signal SYC is generated every second cycle of the upper and lower drive signals PSa, PSb, but may be generated every first cycle. As a result, it is possible to generate the upper and lower drive signals PSa and PSb synchronized with the power supply device 1 in the master mode with higher accuracy.

  Further, the power supply synchronization signal SYC may be generated every third period or more as long as the power supply to the power receiving device 2 is not hindered. Thereby, it is possible to reduce loads on the system control circuit 40, the power feeding synchronization circuit 42, and the like.

  Furthermore, as shown in FIG. 21, the power feeding synchronization signal SYC1 is generated at predetermined intervals for the upper and lower driving signals PSa1 and PSb1 generated by the power feeding signal generation circuit 41 in the master mode. The power supply synchronization signal SYC1 is output as a resynchronization signal to the power supply signal generation circuit 41 that is in the slave mode (including the standby mode).

  Then, the count value of the counter CNT of the power supply signal generation circuit 41 in the slave mode (including the standby mode) is reset in response to the power supply synchronization signal SYC1 (resynchronization signal). The power supply signal generation circuit 41 in the slave mode (including the standby mode) starts counting the reference clock signal CLK from its own system control circuit 40 again from the reset, and generates the upper and lower drive signals PSa2 and PSb2. It may be carried out as described above.

  That is, every time the power feeding synchronization signal SYC1 (resynchronization signal) is input, the accumulation of the deviation amounts of the upper and lower drive signals PSa and PSb generated by the power feeding signal generation circuit 41 in the slave mode (including the standby mode) is reset. Is done. Accordingly, as shown in FIG. 21, the deviation amounts of the upper and lower drive signals PSa and PSb in the slave mode (including the standby mode) with respect to the upper and lower drive signals PSa1 and PSb1 in the master mode are within a certain range. It is suppressed to the following. As a result, there is no cancellation of electromagnetic energy generated by the feeding coil L1 due to a difference in feeding frequency, synchronization timing, etc. of the high-frequency current passing through the feeding coil L1 with an inexpensive circuit configuration. The power receiving device 2 can be efficiently fed.

  Of course, in the first and second embodiments, in the configuration in which the power supply signal generation circuit 41 calculates the correction count value K2 using the counter CNT, the power supply synchronization signal SYC1 (resynchronization signal) is used together. The counter CNT may be reset from time to time. In this case, the frequency of resetting the counter CNT can be reduced.

  In each of the embodiments described above, the power supply synchronization circuit 42 in the slave mode (including the standby mode) receives the power supply synchronization signal SYC from the master mode, and performs a correction count using the power supply synchronization signal SYC and its own reference clock signal CLK. The value K2 was determined. Then, the power supply signal generation circuit 41 in the slave mode generates the upper and lower drive signals PSa and PSb using the correction count value K2. The power supply signal generation circuit 41 in the slave mode (including the standby mode) directly inputs the upper and lower drive signals PSa and PSb in the master mode, and inputs the input upper and lower drive signals PSa and PSb. May be output to each power supply circuit 31. In this case, the power feeding synchronization circuit 42 can be omitted.

  As shown in FIG. 22, in each power feeding device 1, a drive signal switching circuit 60 is provided between the power feeding signal generation circuit 41 and each power feeding circuit 31, and each driving signal switching circuit 60 is adjacent to the left and right. 1 drive signal switching circuit 60. Then, the upper and lower drive signals PSa and PSb in the master mode are directly output to the drive signal switching circuit 60 of the adjacent power supply apparatus 1 via the drive signal switching circuit 60 and are supplied to the power supply circuit 31 of the adjacent power supply apparatus 1. It may be output.

  The drive signal switching circuit 60 of each power supply apparatus 1 receives its own drive signals PSa and PSb from its own power supply signal generation circuit 41 and also receives the switch signal SS from its own system control circuit 40 via the power supply signal generation circuit 41. Enter.

  Here, the switching signal SS from the system control circuit 40 indicates whether its own system control circuit 40 is in the master mode and which power supply circuit 31 is in the excitation mode or standby mode, and whether the adjacent power supply apparatus 1 is in the slave mode. It has the signal which shows. Alternatively, the switching signal SS includes a signal indicating which power supply device 1 is in the slave mode and which power supply circuit 31 is in the excitation mode or the standby mode. Further, the switching signal SS has a signal indicating that its own system control circuit 40 is in the sleep mode.

  The drive signal switching circuit 60 excites the upper and lower drive signals PSa and PSb generated by the power supply signal generation circuit 41 based on the switching signal SS when the system control circuit 40 is in the master mode. The power is output to the power feeding circuit 31 in the mode. At this time, when the adjacent power supply apparatus 1 is in the slave mode, the drive signal switching circuit 60 supplies power to the drive signal switching circuit 60 of the left or right power supply apparatus 1 in the slave mode. The upper and lower drive signals PSa and PSb generated by the signal generation circuit 41 are output.

  In addition, when the system control circuit 40 of the drive signal switching circuit 60 is in the slave mode, the drive signal switching circuit 60 outputs the drive signal switching circuit 60 from the drive signal switching circuit 60 of the left or right power supply apparatus 1 in the master mode based on the switching signal SS. The upper and lower drive signals PSa and PSb are input and selected. The drive signal switching circuit 60 supplies the upper and lower drive signals PSa and PSb from the drive signal switching circuit 60 of the left or right power supply apparatus 1 in the master mode to its own excitation mode. To 31.

  Further, when the system control circuit 40 of the drive signal switching circuit 60 is in the sleep mode, the drive signal switching circuit 60 receives the upper and lower drive signals PSa and PSb for detection of the power receiving device 2 generated by the power supply signal generation circuit 41 of the drive signal switching circuit 60. It outputs to its own power supply circuit 31.

  Therefore, the upper and lower drive signals PSa and PSb in the master mode are not output to the power supply signal generation circuit 41 in the slave mode via the system cooperation circuit 35 and the first and second information input / output circuits 33 and 34, respectively. As a result, the load on the link circuit 35 and the first and second information input / output circuits 33 and 34 of each power supply device 1 can be reduced, and the synchronization accuracy of the drive signals PSa and PSb can be improved.

  In each drive signal switching circuit 60, when the upper and lower drive signals PSa and PSb are input from the drive signal switching circuit 60 of the other power supply apparatus 1, they are input via a noise removal circuit (not shown). Also good. As a result, it is possible to remove noise that is transferred during the transfer of the upper and lower drive signals PSa and PSb from the drive signal switching circuit 60 of the other power supply apparatus 1.

  In addition, regarding each power supply device 1 illustrated in FIG. 22, when the upper and lower drive signals PSa and PSb are transferred between the power supply devices 1, the delay due to the wiring resistance and the wiring capacitance is not considered. This may be performed in consideration of a delay due to the wiring resistance of the upper and lower drive signals PSa and PSb.

In this case, it is performed as follows.
First, as shown in FIG. 23, the system control circuit 40 of each power supply apparatus 1 uses the upper and lower drive signals PSa and PSb output from its drive signal switching circuit 60 as drive signals for the right and left power supply apparatuses 1. The right side and left side delay information RD and LD are stored for the time (delay time) required to be input to the switching circuit 60. Note that the right and left delay information RD and LD are obtained in a delay time measurement mode, which will be described later, and stored in a memory 40 a built in the system control circuit 40.

  Further, the memory 40a of the system control circuit 40 of each power supply apparatus 1 stores the right and left delay information RD and LD obtained by the system control circuits 40 of the other power supply apparatuses 1 in the delay time measurement mode, which will be described later. The information is stored via the second information input / output circuits 33 and 34 and the system linkage circuit 35.

  On the other hand, as shown in FIG. 23, the drive signal switching circuit 60 of each power supply apparatus 1 receives its own drive signals PSa and PSb from its own power supply signal generation circuit 41 and performs its own system control as described above. The switching signal SS is input from the circuit 40 via the power supply signal generation circuit 41. Further, the drive signal switching circuit 60 of each power supply apparatus 1 receives the delay information RD, LD stored in the memory 40a from its own system control circuit 40.

  Furthermore, the drive signal switching circuit 60 of each power supply apparatus 1 includes a delay circuit unit 60a. When the delay circuit unit 60 a outputs its own drive signals PSa and PSb from the master mode drive signal switching circuit 60 to its own power supply circuit 31, its own circuit control circuit 40. Is delayed based on the delay information RD, LD from the output.

  More specifically, when its own system control circuit 40 is (1) in the master mode and the right power supply apparatus 1 is not in the slave mode, (2) in the master mode and the right power supply apparatus 1 is in the slave mode. Can be considered.

  In addition, when the own system control circuit 40 is (1) in the slave mode and the right power supply apparatus 1 is not in the slave mode, (2) it is in the slave mode and the right power supply apparatus 1 is in the slave mode. It is done.

(When own system control circuit 40 is in the master mode)
(1) When the right power supply apparatus 1 is not in the slave mode The drive signal switching circuit 60 supplies the upper and lower drive signals PSa and PSb generated by its own power supply signal generation circuit 41 to the power supply circuit 31 in the excitation mode. Output. At this time, the drive signal switching circuit 60 outputs the upper and lower drive signals PSa and PSb to the power feeding circuit 31 without being delayed by the delay circuit unit 60a using the delay information RD and LD.

  When the adjacent power supply apparatus 1 is in the standby mode, the drive signal switching circuit 60 in the master mode drives the upper and lower drive signals PSa and PSb in the standby mode without being delayed by the delay circuit unit 60a. The signal is output to the signal switching circuit 60.

(2) When the right power supply apparatus 1 is in the slave mode The drive signal switching circuit 60 inputs the upper and lower drive signals PSa and PSb generated by its own power supply signal generation circuit 41. At this time, the drive signal switching circuit 60 delays the upper and lower drive signals PSa and PSb using the delay information RD on the right side by the delay circuit unit 60a and outputs the delayed signal to its own power supply circuit 31 in the excitation mode. .

  The master mode drive signal switching circuit 60 outputs the upper and lower drive signals PSa and PSb to the right slave mode drive signal switching circuit 60 without being delayed by the delay circuit section 60a. Then, the drive signal switching circuit 60 in the slave mode is immediately in the excitation mode without delaying the upper and lower drive signals PSa and PSb from the drive signal switching circuit 60 in the master mode by the delay circuit unit 60a. Output to the power feeding circuit 31.

  That is, in the slave mode drive signal switching circuit 60, the upper and lower drive signals PSa and PSb from the master mode drive signal switching circuit 60 are delayed by the delay time of the right delay information RD based on the wiring resistance and the like. It is output to the power feeding circuit 31.

  On the other hand, in the drive signal switching circuit 60 in the master mode, the upper and lower drive signals PSa and PSb generated by the power supply signal generation circuit 41 of the master mode are not delayed in the delay circuit unit 60a and are driven in the right slave mode. It is output to the switching circuit 60. Then, the drive signal switching circuit 60 in the slave mode immediately outputs the upper and lower drive signals PSa and PSb from the drive signal switching circuit 60 in the master mode to its own power supply circuit 31.

  As a result, even if the upper and lower drive signals PSa and PSb are delayed due to wiring resistance or the like between the power feeding devices 1, the power feeding circuit 31 in the master mode and the power feeding circuit 31 in the slave mode are both fed at the same timing. L1 can be energized.

  When there are a plurality of slave mode power supply apparatuses 1 on the right side, the master mode system control circuit 40 reads the right delay information RD of the plurality (for example, two) of power supply apparatuses 1 from the memory 40a. To the drive signal switching circuit 60.

  That is, the master mode system control circuit 40 measures the delay information RD on the right side of the first power supply device 1 measured by itself and the right side (master mode power supply device 1 measured by the first power supply device 1). The second delay information RD with respect to the second power feeding device 1 is output to the drive signal switching circuit 60.

  Further, the right-side first slave mode system control circuit 40 provides the drive signal switching circuit 60 with the right-side delay information RD for the second right-side power feeding device 1 measured by the first right-side power feeding device 1. Output.

  At this time, the driving signal switching circuit 60 in the master mode uses the right delay information RD of the two right power feeding devices 1 to delay the upper and lower driving signals PSa and PSb by using the right delay information RD of the two right power feeding devices 1. To 31.

  The master mode drive signal switching circuit 60 outputs the upper and lower drive signals PSa and PSb to the first slave mode drive signal switching circuit 60 on the right side without being delayed by the delay circuit unit 60a.

  The first slave mode drive signal switching circuit 60 on the right side receives the upper and lower drive signals PSa and PSb from the master mode drive signal switching circuit 60. The drive signal switching circuit 60 in the first slave mode on the right side is delayed by the delay circuit section 60a using the right delay information RD for the second power supply device 1 on the right side, and the upper and lower drive signals PSa, PSb. Is output to its own power supply circuit 31.

  Further, the first slave mode drive signal switching circuit 60 on the right side includes two upper right and lower drive signals PSa and PSb from the master mode drive signal switching circuit 60 without being delayed by the delay circuit section 60a. It outputs to the drive signal switching circuit 60 in the slave mode of the eye.

  The second slave mode drive signal switching circuit 60 on the right side delays the upper and lower drive signals PSa and PSb from the first slave mode drive signal switching circuit 60 on the right side by the delay circuit unit 60a. Immediately without output, the power is output to the power feeding circuit 31 in the excitation mode.

  In other words, in the second slave mode drive signal switching circuit 60 on the right side, the upper and lower drive signals PSa and PSb from the master mode drive signal switching circuit 60 are supplied to the first right side and second right side power feeding devices. 1 is output to its own power supply circuit 31 with a delay time obtained by adding the respective right delay information RD for 1.

  Further, in the first slave mode drive signal switching circuit 60 on the right side, the upper and lower drive signals PSa and PSb from the master mode drive signal switching circuit 60 are the right delay information for the first power supply device 1 on the right side. It is output to its own power supply circuit 31 with a delay time of RD.

  On the other hand, in the drive signal switching circuit 60 in the master mode, the upper and lower drive signals PSa and PSb generated by the power supply signal generation circuit 41 of the master mode are supplied to the first right side and second right side power supply in the delay circuit unit 60a. Each right delay information RD for the device 1 is delayed by a total delay time and output to its own power supply circuit 31.

  As a result, even if the upper and lower drive signals PSa and PSb are delayed between the power supply devices 1 due to wiring resistance or the like, the master-mode power supply circuit 31 and the two slave-mode power supply circuits 31 have the same timing. The feeding coil L1 can be energized.

  Therefore, when the feeding coils L1 of the plurality of feeding devices 1 cooperate to feed the power receiving device 2, the high-frequency currents that the plurality of feeding devices 1 pass through the feeding coils L1 have the same frequency and no phase shift. High frequency current. As a result, more efficient power supply to the power receiving device 2 can be performed.

(When own system control circuit 40 is in slave mode)
(1) When the right power supply apparatus 1 is not in the slave mode The drive signal switching circuit 60 outputs the upper and lower drive signals PSa and PSb from the left drive signal switch circuit 60 to the power supply circuit 31 in the excitation mode. To do. At this time, the drive signal switching circuit 60 immediately outputs the upper and lower drive signals PSa and PSb to the power feeding circuit 31 without delaying by the delay circuit unit 60a using the delay information RD and LD.

  When the adjacent right power supply apparatus 1 is in the standby mode, the master mode drive signal switching circuit 60 does not delay the upper and lower drive signals PSa and PSb in the standby mode without being delayed by the delay circuit section 60a. Output to the drive signal switching circuit 60.

(2) When the right power feeding apparatus 1 is in the slave mode The drive signal switching circuit 60 inputs the upper and lower drive signals PSa and PSb from the left drive signal switching circuit 60. At this time, the drive signal switching circuit 60 delays the upper and lower drive signals PSa and PSb from the left drive signal switch circuit 60 by the delay circuit unit 60a using the right delay information RD to enter the excitation mode. It outputs to a certain own power supply circuit 31.

  The slave mode drive signal switching circuit 60 switches the upper and lower drive signals PSa and PSb from the left drive signal switch circuit 60 to the right slave mode drive signal without delaying by the delay circuit section 60a. Output to the circuit 60.

  The right slave mode drive signal switching circuit 60 immediately applies the upper and lower drive signals PSa and PSb from the left slave mode drive signal switching circuit 60 without delaying them in the delay circuit section 60a. Is output to the feeding circuit 31.

  That is, in the right slave mode drive signal switching circuit 60, the upper and lower drive signals PSa and PSb from the left slave mode drive signal switching circuit 60 are fed by themselves with a delay time of the right delay information RD. It is output to the circuit 31.

  On the other hand, in the left slave mode drive signal switching circuit 60, the upper and lower drive signals PSa and PSb outputted to the right slave mode drive signal switching circuit 60 are converted into the right delay information RD by the delay circuit section 60a. The delay time is delayed and output to its own power supply circuit 31.

  As a result, the left slave mode power supply circuit 31 and the right slave mode power supply circuit 31 are the same even if the upper and lower drive signals PSa and PSb are delayed between the power supply devices 1 due to wiring resistance or the like. The feeding coil L1 can be energized at each timing.

  When there are a plurality of slave mode power supply devices 1 on the right side, as in the case where there are a plurality of (for example, two) power supply devices 1 with respect to the master mode power supply device 1 described above, power supply in each slave mode is performed. In the apparatus 1, the upper and lower drive signals PSa and PSb output to the power feeding circuit 31 are delay-controlled.

  Therefore, when the feeding coils L1 of the plurality of feeding devices 1 cooperate to feed the power receiving device 2, the high-frequency currents that the plurality of feeding devices 1 pass through the feeding coils L1 have the same frequency and no phase shift. High frequency current. As a result, more efficient power supply to the power receiving device 2 can be performed.

  In each of the drive signal switching circuits 60 in this case, as described with reference to the drive signal switching circuit 60 in FIG. 22, a noise removal circuit is provided, and the upper and lower drive signals from the other drive signal switching circuits 60 are provided. PSa and PSb may remove noise that has been transferred.

(Measurement of right and left delay information RD, LD)
Next, how to obtain the right and left delay information RD, LD stored in the memory 40a provided in the system control circuit 40 of each power supply apparatus 1 will be described.

  The measurement of the right and left delay information RD, LD is performed before the normal operation mode is executed when the contactless power feeding system S is turned on. That is, when the contactless power supply system S is started up by turning on the power, the power supply devices 1 of the contactless power supply system S are selected one by one in a predetermined order (for example, in order from the left side), and the selected power supply device is selected. Measurement processing of measurement of right and left delay information RD, LD for 1 is executed. Here, the selected power supply apparatus 1 is referred to as a power supply apparatus 1 in the delay time measurement mode.

  In the power supply device 1 in the delay time measurement mode, its own system control circuit 40 controls its own power supply signal generation circuit 41 and the drive signal switching circuit 60 to execute a delay time measurement process. That is, the system control circuit 40 in the delay time measurement mode causes the power supply signal generation circuit 41 to generate the upper and lower drive signals PSa and PSb. The system control circuit 40 in the delay time measurement mode uses the upper and lower drive signals PSa and PSb as drive signal switching circuits for the right and left power supply apparatuses 1 via the drive signal switching circuit 60 in its own delay time measurement mode. 60. At this time, the drive signal switching circuit 60 of the right and left power feeding apparatuses 1 loops back the input upper and lower drive signals PSa and PSb to the output drive signal switching circuit 60 in the delay time measurement mode.

  At this time, the system control circuit 40 in the delay time measurement mode outputs the drive signals to the drive signal switching circuits 60 of the right and left power supply devices 1 and drives the upper and lower drives looped back to the drive signal switching circuit 60 in the delay time measurement mode. The delay times of the signals PSa and PSb are measured.

  For example, when the upper drive signal PSa output to the drive signal switching circuit 60 of the right power supply apparatus 1 falls, the system control circuit 40 starts counting the reference clock signal CLK. Then, the system control circuit 40 counts the number of reference clock signals CLK until the upper drive signal PSa that has looped back from the drive signal switching circuit 60 of the right power supply apparatus 1 falls.

  Then, the value obtained by dividing the count by 2 is that the upper drive signal PSa (lower drive signal PSb) from the power supply device 1 in the delay time measurement mode is input to the drive signal switching circuit 60 of the right power supply device 1. This is the delay time required for. Then, the system control circuit 40 in the delay time measurement mode stores the obtained delay time in the own memory 40a as the right delay information RD.

  In a similar manner, the delay time required for the upper drive signal PSa (lower drive signal PSb) from the power supply device 1 in the delay time measurement mode to be input to the drive signal switching circuit 60 of the left power supply device 1 is obtained. Then, the system control circuit 40 in the delay time measurement mode stores the obtained delay time in its own memory 40a as the left delay information LD.

  The system control circuit 40 in the delay time measurement mode stores the right and left delay information RD and LD stored in its own memory 40a through the system linkage circuit 35 and the first and second information input / output circuits 33 and 34. The power is output to the system control circuit 40 of the power feeding device 1. The system control circuit 40 of each power supply apparatus 1 stores the right and left delay information RD and LD obtained by the system control circuit 40 in the delay time measurement mode in the built-in memory 40a.

  When one power supply device 1 enters the delay time measurement mode and the right and left delay information RD and LD are obtained, the next power supply device 1 enters the delay time measurement mode and obtains the right and left delay information RD and LD. I do. Similarly to the previous power supply device 1, the next power supply device 1 obtains the right and left delay information RD and LD and stores them in the memory 40 a of its own system control circuit 40, and system control of each of the other power supply devices 1. Each of them is stored in the memory 40a of the circuit 40.

  When obtaining the right and left delay information RD, LD, the system control circuit 40 counts the number of reference clock signals CLK, and the value obtained by dividing the counted number by 2 is a drive signal for the right or left power supply device 1. The delay time required for input to the switching circuit 60 is used.

  This is based on the assumption that the wiring material, the cross-sectional area, and the wiring length of the output side wiring (forward path side wiring) and the input side wiring (return path side wiring) of the drive signals SPa and SPb are the same during the loopback. The value obtained by dividing by 2 is established as the delay time. On the other hand, if the wiring material, cross-sectional area, and wiring length of the outgoing path side wiring and the backward path side wiring are different, and the wiring resistance and wiring capacity are different between the outgoing path side wiring and the return path side wiring, the wiring The delay time may be obtained by a calculation method based on the material, the cross-sectional area, and the wiring length.

  Further, the right and left delay information RD, LD in itself and the other power supply apparatus 1 are stored in the memory 40a built in the system control circuit 40. However, the first or second information storage circuit 33c, 34c, or the system cooperation circuit You may memorize | store in the memory incorporated in 35. Of course, a dedicated memory circuit for storing the right and left delay information RD and LD may be provided and stored in the dedicated memory circuit.

  When all the power supply devices 1 are in the delay time measurement mode, the right and left delay information RD, LD of all the power supply devices 1 is stored in the memory 40a of the system control circuit 40 of all the power supply devices 1. The non-contact power feeding system S shifts from the delay time measurement mode to the normal operation mode.

  Since the left and right delay information LD and RD are automatically obtained by processing operation of the system control circuit 40 in the power feeding apparatus 1, labor for obtaining the left and right delay information LD and RD is reduced.

  Note that this may be applied to the power supply device 1 of the second embodiment. That is, in the power feeding device 1, the drive signal switching circuit 60 is provided between the power feeding signal generation circuit 41 and the power feeding circuit 31, and each drive signal switching circuit 60 is adjacent to the left and right in the power feeding device 1. You may implement so that it may connect. At this time, the drive signal switching circuit 60 positioned at both the left and right ends is connected to the drive signal switching circuit 60 of the left or right power supply apparatus 1 and one side thereof.

  Further, in the power feeding device 1 provided with the drive signal switching circuit 60, the phases of the upper and lower drive signals PSa and PSb from the drive signal switching circuit 60 in the master mode are varied using the above-described phase designation information. It may be output to its own power supply circuit 31 in the slave mode.

  In the second embodiment, the first information input / output circuit 33 is connected to the rightmost system linkage circuit 35 and the second information input / output circuit 34 is connected to the leftmost system linkage circuit 35. However, the present invention is not limited to this. Alternatively, it may be carried out by connecting to an appropriate system linkage circuit 35, respectively. Of course, two systems of the first and second information input / output circuits 33 and 34 may be connected to one system cooperation circuit 35.

In each of the above embodiments, two power supply devices 1, that is, the first and second information input / output circuits 33 and 34 are provided, but three or more power supply devices 1 may be provided.
Further, one power supply device 1 may be provided, that is, one of the first and second information input / output circuits 33 and 34 may be provided.

  In this case, the power supply apparatus 1 is provided with a plurality of input / output terminal pairs, and a selector circuit is provided between the plurality of input terminal pairs and one information input / output circuit. Further, the plurality of input / output terminal pairs are connected to different power feeding apparatuses 1, respectively. Then, the system cooperation circuit 35 controls the selector circuit to perform selection control so that any one of the plurality of input terminal pairs can be connected to the information input / output circuit.

Accordingly, a plurality of power supply apparatuses 1 can be connected to one information input / output circuit, and the circuit scale of the power supply apparatus 1 can be reduced.
In the above embodiment, the adjacent power feeding apparatuses 1 insert the intermediate connector into the opposing connector connection port 13. Then, the second information transmission circuit 34b of one power supply apparatus 1 and the first information reception circuit 33a of the other power supply apparatus 1 are connected via the intermediate connector, and the second information reception circuit 34a of one power supply apparatus 1 is connected. The other power supply device 1 was connected to the first information transmission circuit 33b.

  Instead of the intermediate connector, communication using radio waves, infrared rays, and light may be performed to exchange the information signal D between the adjacent power feeding apparatuses 1. In this case, the signal line connecting the power feeding devices 1 is omitted, and the power feeding device 1 and the power feeding device 1 can be easily assembled, and the non-contact power feeding system S can be easily constructed.

Of course, instead of connecting with a connector or the like, wiring may be connected with each other.
Furthermore, as shown in FIG. 24, an input / output switching circuit 61 may be provided in at least one of the first and second information input / output circuits 33 and 34 of the power feeding device 1. In FIG. 23, the first information input / output circuit 33 of the left power supply apparatus 1 is connected to the second information input / output circuit 34 of the right power supply apparatus 1 and enters the first information input / output circuit 33 of the left power supply apparatus 1. An output switching circuit 61 is provided.

For example, as shown in FIG. 25, the input / output switching circuit 61 includes first to fourth gate transistors Q1 to Q4 made of N-channel MOS transistors.
The source terminal of the first gate transistor Q1 is connected to the first noise removal circuit 33d, and the drain terminal of the second gate transistor Q2 is connected to the first information transmission circuit 33b. The drain terminal of the first gate transistor Q1 and the source terminal of the second gate transistor Q2 are connected to a first external connection terminal Ta1 that is connected to the power supply device 1 on the right side.

  The source terminal of the third gate transistor Q3 is connected to the first noise removal circuit 33d, and the drain terminal of the fourth gate transistor Q4 is connected to the first information transmission circuit 33b. The drain terminal of the third gate transistor Q3 and the source terminal of the fourth gate transistor Q4 are connected to the second external connection terminal Ta2 that is connected to the power supply device 1 on the right side.

  A select signal SL is input to the gate terminals of the first gate transistor Q1 and the fourth gate transistor Q4. The select signal SL is input to the gate terminals of the second gate transistor Q2 and the third gate transistor Q3 via the knot circuit 62.

  When the select signal SL is at the H level, the first gate transistor Q1 and the fourth gate transistor Q4 are turned on, and are connected to the first noise removal circuit 33d and the first external connection terminal Ta1, and the first information transmission is performed. The circuit 33b is connected to the second external connection terminal Ta2.

  On the other hand, when the select signal SL is at the L level, the second gate transistor Q2 and the third gate transistor Q3 are turned on, connected to the first noise removal circuit 33d and the second external connection terminal Ta2, and also to transmit the first information The circuit 33b is connected to the first external connection terminal Ta1.

  The select signal SL is generated by a determination circuit 63 provided in the right power supply apparatus 1. The determination circuit 63 determines the levels of the first and second external connection terminals Tb1 and Tb2 of the second information input / output circuit 34 when the right power supply apparatus 1 is initially set by turning on the power. It is generated by inputting through terminals Ta1 and Ta2.

  More specifically, in the power supply device 1 on the right side, the first external connection terminal Tb1 (input terminal) of the second noise removal circuit 34d of the second information input / output circuit 34 is pulled down to L level when the power is turned on, The second external connection terminal Tb2 (output terminal) of the second information transmission circuit 34b of the output circuit 34 is pulled up to H level when the power is turned on.

  That is, in the determination circuit 63, when the first external connection terminal Ta1 inputs an H level and the second external connection terminal Ta2 inputs an L level, the first external connection terminal Ta1 is connected to the second information transmission circuit 34b. Then, it is determined that the second external connection terminal Ta2 is connected to the second noise removal circuit 34d.

  Then, the determination circuit 63 outputs an H level select signal SL, turns on the first and fourth gate transistors Q1, Q4, and turns off the second and third gate transistors Q2, Q3. As a result, the first noise removal circuit 33d of the left power supply apparatus 1 and the second information transmission circuit 34b on the right side are connected, and the first information transmission circuit 33b of the left power supply apparatus 1 and the second noise removal on the right side are connected. The circuit 34d is connected.

  On the other hand, when the first external connection terminal Ta1 inputs an L level and the second external connection terminal Ta2 inputs an H level, the determination circuit 63 connects the first external connection terminal Ta1 to the second noise removal circuit 34d. Then, it is determined that the second external connection terminal Ta2 is connected to the second information transmission circuit 34b.

  Then, the determination circuit 63 outputs an L level select signal SL, turns on the second and third gate transistors Q2, Q3, and turns off the first and fourth gate transistors Q1, Q4. As a result, the first noise removal circuit 33d of the left power supply apparatus 1 and the second information transmission circuit 34b on the right side are connected, and the first information transmission circuit 33b of the left power supply apparatus 1 and the second noise removal on the right side are connected. The circuit 34d is connected.

The determination circuit 63 holds the determination result even after the initial setting and holds it until the power is turned off.
Therefore, when the power feeding device 1 and the power feeding device 1 are connected by, for example, wiring, the wiring is switched by the input / output switching circuit 61 after the wiring, whereby the two external connection terminals of the one power feeding device 1 and the other power feeding. Wiring can be performed without being conscious of the connection between the two external connection terminals of the device 1. As a result, the power supply device 1 and the power supply device 1 can be connected without being conscious of the connection, so that the construction and construction of the non-contact power supply system S is facilitated.

  Of course, instead of configuring the input / output switching circuit 61 with the electronic circuits such as the first to fourth gate transistors Q1 to Q4, the input / output switching circuit 61 is configured with a mechanical switch such as a DIP switch, You may carry out by switching manually.

In the communication method, information may be exchanged by 1-bit serial communication or information may be exchanged by multi-bit parallel communication.
In each of the above embodiments, the non-contact power feeding system S in which one power feeding device 1 is arranged in one direction (linear shape) and the power feeding area is expanded to one side is constructed.

  As shown in FIG. 26, this may be implemented by constructing a non-contact power feeding system S in which the power feeding device 1 is arranged in two directions (planar) and the power feeding area is expanded. In this case, by providing four information input / output circuits in one power supply device 1, it is possible to exchange information signals D with adjacent power supply devices 1 positioned in four directions.

  In addition, as shown in FIG. 27, the power feeding device 1 having one power feeding coil L1 is arranged in a planar shape so as to be adjacent to the power feeding device 1 having the same configuration in six directions, and the power feeding region is expanded. The contact power supply system S may be constructed. In this case, for example, by providing six information input / output circuits for one power supply device 1, it is possible to exchange information signals D with adjacent power supply devices 1 located in six directions.

  Furthermore, as shown in FIG. 28, the power supply device 1 having one power supply coil L1 is arranged in a planar shape so as to be adjacent to the power supply device 1 having the same configuration in eight directions, and the power supply region is expanded. The contact power supply system S may be constructed. In this case, for example, by providing eight information input / output circuits for one power supply device 1, it is possible to exchange information signals D with adjacent power supply devices 1 located in eight directions.

In the above embodiment, for example, the present invention may be applied to the non-contact power supply system S that supplies power to the power receiving device 2 having a function of transmitting its own identification information.
For example, the power feeding device 1 has a function of receiving identification information transmitted from the power receiving device 2 for each power feeding coil L1. Then, the system control circuit 40 may perform power supply if the identification information from the power reception device 2 is registered, and may not perform power supply if the power reception device is not registered. At this time, the identification information received by the system control circuit 40 is output to the system cooperation circuit 35 and is output to the other system cooperation circuit 35.

  In this case, the unregistered power receiving device 2 is not unnecessarily supplied with power. When a plurality of registered power receiving apparatuses 2 are arranged in the non-contact power feeding system S, the system control circuit 40 of the power feeding apparatus 1 determines that a plurality of different power receiving apparatuses 2 are arranged. And even if each power receiving apparatus 2 is arrange | positioned adjacently, the non-contact electric power feeding system S makes the system control circuit 40 of each power feeding apparatus 1 master mode, slave mode, standby mode, sleep mode etc. for every power receiving apparatus 2. The power receiving devices 2 can be simultaneously powered.

  Further, for example, when frequency information indicating a feeding frequency (a feeding frequency of a high-frequency current) for resonating the receiving coil L <b> 2 of the power receiving device 2 is transmitted, the system control circuit 40 receives the frequency information from the power receiving device 2. The system control circuit 40 may cause the power supply signal generation circuit 41 to generate the upper and lower drive signals PSa and PSb of the power supply frequency based on the frequency information from the power receiving device 2. That is, the power supply signal generation circuit 41 sets the reference count value K1 counted by the counter CNT using the frequency information, and uses the reference count value K1 based on the frequency information to generate the upper and lower drive signals PSa and PSb. Generate. At this time, the frequency information received by the system control circuit 40 is output to the system cooperation circuit 35 and is output to the other system cooperation circuit 35.

  For example, when the winding number information indicating the winding number of the power receiving coil L <b> 2 of the power receiving device 2 is transmitted, the system control circuit 40 receives the winding number information from the power receiving device 2. The system control circuit 40 may cause the power feeding circuit 31 to generate a high-frequency current having a magnitude based on the number of turns information from the power receiving device 2. At this time, the winding number information received by the system control circuit 40 is output to the system cooperation circuit 35 and is output to the other system cooperation circuit 35.

  Therefore, the identification information, the frequency information, and the winding number information are transmitted from the power receiving device 2 together, and the power feeding device 1 has a function of receiving the identification information, the frequency information, and the winding number information from the power receiving device 2 for each feeding coil L1. In this case, power supply with a wider application range is possible.

For example, in the non-contact power supply system S, the plurality of power receiving devices 2 can receive power supply in different positions with different high-frequency current magnitudes and different frequencies.
Further, frequency information and winding number information for each power receiving device 2 (identification information) are stored in advance in each power feeding device 1 (for example, the first and second information storage circuits 33c and 34c). Then, the power feeding device 1 may input only the identification information of the power receiving device 2 and calculate the frequency information and the number of turns information based on the identification information to control energization of the power feeding coil L1.

  In the above-described embodiment, for a plurality of power supply apparatuses 1 connected in a line type topology, a management apparatus PC for system inspection / management composed of a personal computer or the like has a line type topology in the power supply apparatus 1 at one end thereof. So connected. Then, the management apparatus PC can perform initial setting / setting change and setting confirmation of parameters and various information of each power supply apparatus 1 at once.

  The management apparatus PC is connected to a plurality of power supply apparatuses 1 connected in a line type topology so as to have a bus type topology. Then, the management apparatus PC may be configured to perform initial setting / setting change and setting confirmation of the parameters of the power supply apparatuses 1 and various information all at once.

Of course, the management apparatus PC may be connected to a plurality of power supply apparatuses 1 connected in a line type topology so as to have a topology in which a line type and a bus type are combined.
In each of the above embodiments, the power receiving device 2 supplies the driving power to the load Z of the electric device E on the housing 21. Alternatively, the power receiving device 2 may be configured integrally with the electric device E. For example, the power receiving circuit 55 of the power receiving device 2 including the power receiving coil L2 may be built in the casing of the electric device E.

  In the above embodiment, the shapes of the power feeding coil L1 and the power receiving coil L2 are quadrangular, but the shape is not limited to a quadrangular shape. Also good. Also, the sizes of the feeding coil L1 and the receiving coil L2 are not particularly limited. For example, the feeding coil L1 and the receiving coil L2 are the same or relatively different in size. May be.

  In each of the above embodiments, the power supply of each power supply apparatus 1 has not been specifically described, but one power supply apparatus for the entire non-contact power supply system is provided. The one power supply device inputs, for example, a commercial power source, and generates a driving power source for each power feeding device 1 from the commercial power source. And you may make it implement so that the drive power produced | generated with one power supply device may be supplied to each electric power feeder 1, respectively. Of course, a plurality of power supply devices 1 constituting the non-contact power supply system S may be divided into a plurality of sets, and one power supply device may be provided for each divided set.

  Further, each power supply device 1 is provided with a power supply device. The power supply apparatus of each power supply apparatus 1 may be configured to input a commercial power supply and generate a drive power supply for the power supply apparatus 1 from the commercial power supply.

  In the above embodiment, the non-contact power feeding system S is installed on the baseboard 7 formed on the lower side of the wall 6 of the room 5, but is not limited to this, for example, the floor of the room, the wall, You may install in a ceiling, a duck, etc. Of course, you may install in the top plate of a desk.

  DESCRIPTION OF SYMBOLS 1 ... Power feeding device (non-contact power feeding device), 2 ... Power receiving device, 5 ... Room, 6 ... Wall, 7 ... Baseboard, 11 ... Housing, 12 ... Power feeding surface, 13 ... Connector connection port, 21 ... Housing, 22 ... Power receiving surface, 31 ... Power feeding circuit, 33, 34 ... First and second information input / output circuits, 33a, 34a ... First and second information receiving circuits, 33b, 34b ... First and second information transmitting circuits, 33c, 34c ... first and second information storage circuits, 33d, 34d ... first and second noise removal circuits, 35 ... system cooperation circuit, 40 ... system control circuit, 40a ... memory, 41 ... power supply signal generation circuit, 42 DESCRIPTION OF SYMBOLS ... Feed synchronous circuit, 44 ... Gate circuit, 45 ... 1st AND circuit, 46 ... 2nd AND circuit, 55 ... Power receiving circuit, 60 ... Drive signal switching circuit, 60a ... Delay circuit part, 61 ... Input / output switching circuit, 62 ... Knot circuit, 63 ... Determination circuit, S ... Non Tactile power feeding system, AR1 ... feeding area, AR2 ... receiving surface, L1 ... feeding coil, L2 ... receiving coil, E ... electric equipment, Z ... load, Ca, Cb ... first and second capacitors, Qa, Qb ... first And second power transistor, N1, N2 ... node, Cx1, Cx2 ... resonant capacitor, CNT ... counter, CNT1, CNT2 ... first and second counters, K1 ... reference count value, K2 ... correction count value, K3 ... for detection Count value, EN ... enable signal, CLK ... reference clock signal, CLK1, CLK2 ... first and second clocks, PSa, PSb ... upper and lower drive signals (information, synchronization signal), D ... information signal (information), SYC, SYC1 ... power feeding synchronization signal (information, synchronization signal), PC ... management device, Vdd ... DC voltage, SS ... switching signal, RD, LD ... right side and left side Extension information, Q1 to Q4 ... first to fourth gate transistors, Ta1, Ta2 ... first and second external connection terminals, Tb1, Tb2 ... first and second external connection terminals, SL ... select signal.

Claims (35)

High-frequency current from the power supply circuit is passed through the power supply coil to generate an alternating magnetic field, and secondary power is generated using electromagnetic induction for the power reception coil provided in the power reception device that generates the power source required for the electrical equipment. A non-contact power feeding system in which a plurality of non-contact power feeding devices that perform power feeding are arranged,
Each non-contact power feeding device includes an information input / output circuit, and each non-contact power feeding device exchanges information with the other power feeding device via the information input / output circuit. A non-contact power feeding system characterized by. In the non-contact electric power feeding system of Claim 1,
The non-contact power feeding system according to claim 1, wherein the information is a device detection result when the presence or absence of the power receiving device facing the power feeding coil provided in each non-contact power feeding device is detected. In the non-contact electric power feeding system according to claim 1 or 2,
The information is a synchronization signal for synchronizing the high-frequency current that is output from any one of the non-contact power feeding devices in each of the non-contact power feeding devices, and the other non-contact power feeding device flows through the power feeding coil,
When the other non-contact power supply device generates a high-frequency current, the non-contact power generation device generates a high-frequency current synchronized with the high-frequency current of the non-contact power supply device that outputs the synchronization signal based on the synchronization signal. Power supply system. A feeding coil;
A power supply circuit for supplying a high-frequency current to the power supply coil;
A signal generation circuit for generating a high-frequency current by driving the power supply circuit to output a drive signal;
A system control circuit for controlling a drive signal generated by the signal generation circuit,
A secondary power is generated by using electromagnetic induction for a power receiving coil provided in a power receiving device that generates an alternating magnetic field by causing the high-frequency current to flow through the power feeding coil and generates a power source required for the electrical equipment. A non-contact power supply device for supplying power,
An information input / output circuit for inputting / outputting information to / from other contactless power supply devices;
A non-contact power supply comprising: a system linkage circuit that outputs information input from the information input / output circuit to the system control circuit and outputs information from the system control circuit to the information input / output circuit apparatus. In the non-contact electric power feeder of Claim 4,
The system control circuit outputs a reference clock signal for generating the drive signal for setting the frequency of the high-frequency current, and outputs an enable signal,
The signal generation circuit counts the reference clock signal, generates the drive signal that is inverted based on a reference count value, and outputs the drive signal to the power supply circuit based on the enable signal. A non-contact power feeding device. In the non-contact electric power feeder of Claim 5,
The system control circuit detects whether or not the power receiving device is opposed to the power supply coil, and outputs the enable signal based on the device detection result to the signal generation circuit. apparatus. In the non-contact electric power feeder of any one of Claims 4-6,
A plurality of the feeding coils are provided,
The power supply circuit is provided for each of the power supply coils,
One of the signal generation circuit, the system control circuit, and the system linkage circuit is provided for all of the power supply coils, and generates a common drive signal for each of the power supply circuits. . In the non-contact electric power feeder of Claim 7,
A non-contact power feeding device, wherein a plurality of the information input / output circuits are provided for the system linkage circuit. In the non-contact electric power feeder of Claim 7 or 8,
The synchronization signal from the other non-contact power feeding device and the drive signal from the signal generation circuit are input, and the other non-contact in place of the reference count value set for the signal generation circuit to generate the drive signal. A non-contact power feeding apparatus comprising: a power feeding synchronization circuit that obtains a correction count value synchronized with a drive signal of the power feeding apparatus and outputs the correction count value to the signal generation circuit. The contactless power supply device according to claim 9, wherein
The system linkage circuit is configured so that the system control circuit performs system control of another contactless power supply device based on information on the device detection result from a system control circuit and information on a device detection result from another contactless power supply device. Set the reference mode or subordinate mode for the circuit,
When the system control circuit is set to the reference mode, the signal generation circuit generates the drive signal that is inverted based on the reference count value, and the synchronization signal is passed through the system cooperation circuit and the information input / output circuit. Output to other non-contact power feeding devices,
The system control circuit, when set to the subordinate mode, generates the drive signal that is inverted based on the correction count value obtained by the power supply synchronization circuit in the signal generation circuit. The contactless power supply device according to claim 10,
The system control circuit set to the reference mode or the subordinate mode outputs the enable signal for outputting the drive signal to the power supply circuit of the power supply coil detecting the power reception device, and detects the power reception device. A non-contact power feeding apparatus that outputs the enable signal that does not output the drive signal to a power feeding circuit of a power feeding coil that is not connected. In the non-contact electric power feeder of Claim 11,
Based on the information on the device detection result from the system control circuit and the information on the device detection result from another non-contact power supply device, the power supply coil of its own non-contact power supply device uses the power supply coil of the system cooperation circuit. When not detecting and when the most adjacent feeding coil of another non-contact power feeding device is not detecting the power receiving device, the system control circuit is set to the sleep mode,
The system control circuit set in the sleep mode counts the reference clock signal with respect to the signal generation circuit, generates a detection drive signal that is inverted based on a predetermined detection count value, and generates the enable signal. A non-contact power supply device that intermittently outputs the drive signal for detection to the power supply circuit. In the non-contact electric power feeder of any one of Claims 7-12,
The signal generation circuit receives a synchronization signal from the other contactless power supply device, resets a count value counted by the signal generation circuit, newly counts the reference clock signal, and inverts the reference clock value based on the reference count value A non-contact power feeding device that generates the drive signal. In the non-contact electric power feeder of Claim 7 or 8,
The system linkage circuit is configured so that the system control circuit performs system control of another contactless power supply device based on information on the device detection result from a system control circuit and information on a device detection result from another contactless power supply device. Set the reference mode or subordinate mode for the circuit,
When the system control circuit is set to the reference mode, the signal generation circuit generates the drive signal that is inverted based on the reference count value, and the drive signal is passed through the system cooperation circuit and the information input / output circuit. Output to other non-contact power feeding devices,
When the system control circuit is set to the subordinate mode, instead of the drive signal generated by the signal generation circuit of the system control circuit, the system control circuit is configured to output to the power supply circuit of the contactless power supply apparatus that has become another reference mode. A non-contact power feeding device, wherein a drive signal is input via a system linkage circuit and an information input / output circuit. In the non-contact electric power feeder according to claim 14,
The system control circuit set to the reference mode or the subordinate mode outputs the enable signal for outputting the drive signal to the power supply circuit of the power supply coil detecting the power reception device, and detects the power reception device. A non-contact power feeding apparatus that outputs the enable signal that does not output the drive signal to a power feeding circuit of a power feeding coil that is not connected. In the non-contact electric power feeder according to claim 15,
Based on the information on the device detection result from the system control circuit and the information on the device detection result from another non-contact power supply device, the power supply coil of its own non-contact power supply device uses the power supply coil of the system cooperation circuit. When not detecting and when the most adjacent feeding coil of another non-contact power feeding device is not detecting the power receiving device, the system control circuit is set to the sleep mode,
The system control circuit set in the sleep mode counts the reference clock signal with respect to the signal generation circuit, generates a detection drive signal that is inverted based on a predetermined detection count value, and generates the enable signal. A non-contact power supply device that intermittently outputs the drive signal for detection to the power supply circuit. In the non-contact electric power feeder of Claim 7 or 8,
A drive signal switching circuit is provided between the signal generation circuit and the plurality of power supply circuits,
The drive signal switching circuit is connected so that a drive signal is exchanged with a drive signal switching circuit similarly provided in another power supply device,
The system linkage circuit is configured so that the system control circuit performs system control of another contactless power supply device based on information on the device detection result from a system control circuit and information on a device detection result from another contactless power supply device. Set the reference mode or subordinate mode for the circuit,
When the system control circuit is set to the reference mode, the signal generation circuit generates the drive signal that is inverted based on the reference count value, and the drive signal is transmitted to the system control circuit through its drive signal switching circuit. Along with the output to the power feeding circuit, it outputs to the drive signal switching circuit of other contactless power feeding device,
When the system control circuit is set to the subordinate mode, instead of the drive signal generated by the signal generation circuit of the system control circuit, the system control circuit is configured to output to the power supply circuit of the contactless power supply apparatus that has become another reference mode. A non-contact power feeding device, wherein a driving signal is input via its own driving signal switching circuit and is output to its own power feeding circuit. In the non-contact electric power feeder according to claim 17,
The system control circuit stores, as delay information, a delay time until the drive signal of the system control circuit is input to a drive signal switching circuit of another non-contact power feeding device adjacent thereto,
When the system control circuit is set to the reference mode and the system control circuit of another adjacent non-contact power feeding device is set to the subordinate mode, the drive signal switching circuit in the reference mode is the drive generated by the signal generation circuit. Immediately output the signal to the drive signal switching circuit in another adjacent subordinate mode, and output to the own power supply circuit by delaying the delay time of the delay information with respect to the own power supply circuit,
When the system control circuit is set to the subordinate mode, the driving signal switching circuit in the subordinate mode has its own power feeding circuit when the driving signal from the driving signal switching circuit of the non-contact power feeding device that has become another reference mode is input. A non-contact power feeding device characterized in that it outputs immediately. The contactless power supply device according to claim 18,
The system control circuit outputs the drive signal generated by its own signal generation circuit to the drive signal switching circuit of another adjacent non-contact power feeding device via its own drive signal switching circuit, and loops the output drive signal. A non-contact power feeding apparatus, wherein the delay time of the drive signal that is input after being backed up and is counted is measured by the reference clock signal, and delay information is generated based on the counted delay time. In the non-contact electric power feeder of any one of Claims 10-19,
The system control circuit stores phase designation information for changing the phase of the drive signal output to its own power supply circuit based on the drive signal from the non-contact power supply device in the reference mode. Contact power supply device. In the non-contact electric power feeder of any one of Claims 4-6,
A plurality of the feeding coils are provided,
The power supply circuit, the signal generation circuit, the system control circuit, and the system linkage circuit are provided for each of the power supply coils,
The system control circuit controls the drive signal to be generated for the corresponding signal generation circuit,
Each of the system linkage circuits is connected so as to be able to exchange information with each other. In the non-contact electric power feeder according to claim 21,
A plurality of the information input / output circuits are provided, and the plurality of information input / output circuits are connected to at least one of the plurality of system linkage circuits. The contactless power supply device according to claim 21 or 22,
The synchronization signal from the other system cooperation circuit and the drive signal from the signal generation circuit are input, and the other system cooperation circuit replaces the reference count value set for the signal generation circuit to generate the drive signal. A non-contact power feeding apparatus comprising: a power feeding synchronization circuit that obtains a correction count value that is synchronized with a drive signal of the signal generation circuit in step S1 and outputs the correction count value to the signal generation circuit. The contactless power supply device according to claim 23,
The system cooperation circuit includes information on the device detection result from a corresponding system control circuit, information on the device detection result from another system cooperation circuit, and information on a device detection result from another non-contact power feeding device. Based on whether the corresponding system control circuit is a reference mode or a subordinate mode for all other system control circuits,
When the system control circuit is set to a reference mode, the signal generation circuit generates the drive signal that is inverted based on the reference count value, and outputs the synchronization signal to all other system cooperation circuits. ,
The system control circuit, when set to the subordinate mode, generates the drive signal that is inverted based on the correction count value obtained by the power supply synchronization circuit in the signal generation circuit. The contactless power supply device according to claim 24,
The system control circuit set to the reference mode or the subordinate mode outputs the enable signal that causes the power supply circuit of each corresponding power supply coil to output the drive signal. In the non-contact electric power feeder of Claim 25,
The system linkage circuit is based on information on the device detection result from the system control circuit and information on the device detection result from another system control circuit. When the power feeding coil is not detecting the power receiving device, the system control circuit is set to the sleep mode,
The system control circuit set in the sleep mode counts the reference clock signal with respect to the signal generation circuit, generates a detection drive signal that is inverted based on a predetermined detection count value, and generates the enable signal. A non-contact power supply device that intermittently outputs the drive signal for detection to the power supply circuit. The contactless power supply device according to claim 25 or 26,
The system linkage circuit, based on the information on the device detection result from the system control circuit and the information on the device detection result from another system control circuit, has its own power supply coil not detecting the power receiving device, and at least When the power feeding coil on one side detects the power receiving device, the system control circuit is set to the standby mode,
The system control circuit set in the standby mode causes the signal generation circuit to generate a drive signal that counts the reference clock signal and inverts the signal based on the correction count value, and outputs the drive signal to the power supply circuit. A non-contact power feeding device that outputs the enable signal that is not allowed to be output. In the non-contact electric power feeder of any one of Claims 21-27,
The signal generation circuit receives the synchronization signal from the other, resets the count value counted by the signal generation circuit, newly counts the reference clock signal, and inverts the drive signal based on the reference count value A non-contact power feeding device characterized by generating The contactless power supply device according to claim 21 or 22,
The system cooperation circuit includes information on the device detection result from a corresponding system control circuit, information on the device detection result from another system cooperation circuit, and information on a device detection result from another non-contact power feeding device. Based on whether the corresponding system control circuit is a reference mode or a subordinate mode for all other system control circuits,
When the system control circuit is set to the reference mode, the signal generation circuit generates the drive signal that is inverted based on the reference count value, and outputs the drive signal to all other system cooperation circuits. ,
When the system control circuit is set to the subordinate mode, instead of the drive signal generated by the signal generation circuit of the system control circuit, the drive for outputting to the power supply circuit from the system control circuit that is in another reference mode A non-contact power feeding apparatus, wherein a signal is input via a system linkage circuit. The contactless power supply device according to claim 29,
The system control circuit set to the reference mode or the subordinate mode outputs the enable signal that causes the power supply circuit of each corresponding power supply coil to output the drive signal. The contactless power supply device according to claim 30,
The system linkage circuit is based on information on the device detection result from the system control circuit and information on the device detection result from another system control circuit. When the power feeding coil is not detecting the power receiving device, the system control circuit is set to the sleep mode,
The system control circuit set in the sleep mode counts the reference clock signal with respect to the signal generation circuit, generates a detection drive signal that is inverted based on a predetermined detection count value, and generates the enable signal. A non-contact power supply device that intermittently outputs the drive signal for detection to the power supply circuit. The contactless power supply device according to claim 30 or 31,
The system linkage circuit, based on the information on the device detection result from the system control circuit and the information on the device detection result from another system control circuit, has its own power supply coil not detecting the power receiving device, and at least When the power feeding coil on one side detects the power receiving device, the system control circuit is set to the standby mode,
The system control circuit set in the standby mode receives a drive signal from the system control circuit in another reference mode instead of the drive signal generated by the signal generation circuit of the system control circuit, and supplies the drive signal to the power supply. A non-contact power feeding device that outputs the enable signal that is not output to a circuit. In the non-contact electric power feeder of any one of Claims 4-32,
Switching the connection of the information input / output circuit with respect to the first and second external connection terminals between the information input / output circuit and the first and second external connection terminals connected to the information input / output circuit. A non-contact power feeding device comprising an input / output switching circuit. High-frequency current from the power supply circuit is passed through the power supply coil to generate an alternating magnetic field, and secondary power is generated using electromagnetic induction for the power reception coil provided in the power reception device that generates the power source required for the electrical equipment. A non-contact power feeding system that manages power supply by arranging a plurality of non-contact power feeding devices that perform power feeding,
Each non-contact power supply device includes an information input / output circuit,
Each non-contact power feeding device is connected in a line-type topology via the information input / output circuit,
A management apparatus is connected to each power supply apparatus 1 connected in the line topology, and each power supply apparatus is managed by the management apparatus. . In the cooperation management method of the non-contact electric power feeding system according to claim 34,
The non-contact power supply system, wherein the management device is connected to each power supply device 1 connected in the line type topology so as to have a line type topology and manages each power supply device. Linkage management method.