JP7084956B2 - Coil unit, non-contact power supply device, non-contact power supply system, induction heating device and electromagnetic cooker - Google Patents

Description

The present invention relates to a coil unit, a non-contact power supply device, a non-contact power supply / reception system, an induction heating device and an electromagnetic cooker.

More specifically, the present invention uses a coil unit suitable for use as a feeding coil for supplying power to a power receiving coil in non-contact power feeding, an induction heating device, an induction heating device, or the like, and the coil unit. The present invention relates to a non-contact power feeding device, a non-contact power receiving / receiving system provided with the non-contact power feeding device, an induction heating device using the coil unit, and an electromagnetic cooker using the coil unit.

In general, as one of the methods for supplying power to a power receiving load in a non-contact manner, for example, as disclosed in Japanese Patent Application Laid-Open No. 2014-17973, power is supplied from the feeding coil to the power receiving coil in a non-contact manner by an electromagnetic induction resonance method. A non-contact power supply / reception method is known.

Conventionally, in the field of non-contact power feeding equipment using such a non-contact power feeding method by an electromagnetic induction resonance method, in order to enable non-contact power feeding in a wide area, a plurality of feeding coils are widely used. A so-called multi-coil type non-contact power feeding device, which is arranged side by side on a plane over the entire area, is known.

Such a conventionally known multi-coil type non-contact power feeding device is capable of non-contact power feeding and receiving power supply in a wide area, and is extremely convenient.

However, the above-mentioned conventional multi-coil type non-contact power feeding device has the following problems.

Problem 1: Since multiple feeding coils are arranged evenly on a flat surface over a wide area, the feeding coils in the area where the power receiving coil does not exist are also energized during power receiving and feeding, and an unnecessary magnetic field is generated. There was a problem that it occurred, adversely affected the safety of the human body, and emitted disturbing electromagnetic waves.

Problem 2: Since a plurality of power feeding coils are arranged evenly on a plane over a wide area, the power feeding coil in the area where the power receiving coil does not exist is also energized during power receiving and feeding, so that the power feeding efficiency is improved. There was a problem that it became extremely worse.

Problem 3: When arranging a plurality of feeding coils on a plane evenly over a wide area, it is necessary to wire each of all the feeding coils to the power supply as many connection lines as the number of feeding coils. In addition to the problem of high cost, magnetic field interference between the feeding coils is also a problem when a plurality of power supplies are used.

Japanese Unexamined Patent Publication No. 2014-17973

The present invention has been made in view of various problems of the conventional technique as described above, and an object thereof is when coils such as a plurality of feeding coils are arranged over a wide area. In addition, a coil unit, a non-contact power feeding device, and a non-contact power receiving / feeding device that solve the above-mentioned problems 1 and 2 by selectively energizing a coil such as a feeding coil at an arbitrary location. It seeks to provide systems, induction heating devices and induction cookers.

Further, the present invention has been made in view of various problems in the conventional technique as described above, and an object thereof is to dispose coils such as a plurality of feeding coils over a wide area. In this case, the coil unit, the non-contact power feeding device, and the non-contact that solve the above-mentioned problem 3 by eliminating the need to wire the connection wires from each of the coils such as all the feeding coils to the power supply by the number of coils. It seeks to provide power receiving and receiving systems, induction heating devices and induction cookers.

In order to achieve the above object, the coil unit according to the present invention is arranged so that the first reciprocating line extending in the first direction and the second reciprocating line extending in the second direction intersect each other and the first reciprocating line is arranged. A coil is placed at the intersection of the reciprocating line and the second reciprocating line, and the first reciprocating line is connected to the power supply and the first switch for selecting the connected state or the disconnected state is connected to the second reciprocating line. A second switch for selecting the connected state or the disconnected state is connected and short-circuited.

Therefore, according to the coil unit according to the present invention, a current can be passed from the power supply to the coils arranged at the crossing positions only when both the first switch and the second switch are in the connected state. It will be like.

Therefore, when the non-contact power feeding device, the non-contact receiving power supply system, the induction heating device or the electromagnetic cooker are configured by using the coil unit according to the present invention, the first reciprocating line and the second reciprocating line are X-. By arranging a plurality of coils in a Y matrix shape and arranging the coils in an XY matrix shape at each intersection of the first reciprocating line and the second reciprocating line, the coils at arbitrary positions are arranged. It is possible to selectively energize only the coil.

That is, even when the coil unit according to the present invention is arranged over the entire area of a wide area, it becomes possible to selectively energize the coil at an arbitrary place.

Further, when the coil unit according to the present invention is arranged over the entire area as described above, a plurality of the first reciprocating line and the second reciprocating line are arranged in an XY matrix as described above. This eliminates the need to wire as many connection lines as the number of coils from each of all the coils to the power supply.

Such a coil unit according to the present invention can also be commercialized by forming a conductor pattern of a circuit configuration on a printed circuit board.

Further, the non-contact power supply system according to the present invention is non-contact in a wide range of fields such as power supply to a car parked in a parking lot, power supply to home appliances used indoors, or power supply to small devices placed on a desk. It can be applied to power supply.

Although the coil unit according to the present invention uses a reciprocating wire for wiring, the inductance of the reciprocating wire is small, so that the loss deterioration and the leakage inductance are small.

That is, in the coil unit that can be selectively energized, the coil unit according to the present invention intersects the first reciprocating line extending in the first direction and the first reciprocating line extending in the second direction. The second round-trip line, the coil connected at the intersection of the first round-trip line and the second round-trip line, the power supply connected to the second round-trip line, and the second round-trip line. It has a first switch for selecting the connection state or the disconnection state of the first reciprocating line, and a second switch for selecting the connection state or the disconnection state of the first reciprocating line.

Further, the coil unit according to the present invention is the coil unit according to the present invention, wherein the first reciprocating line has a first conductor in the first direction and a second conductor in the first direction, and the second reciprocating line is described above. Has a first conductor in the second direction and a second conductor in the second direction, the first conductor in the first direction is the outward line, the second conductor in the first direction is the return line, and the second conductor is the return line. When the first conductor in the direction is the outward line and the second conductor in the second direction is the return line, the power supply is the end portion between the first conductor in the second direction and the second conductor in the second direction. The first switch is connected to the first conductor in the second direction, and the second switch is connected between the first conductor in the first direction and the second conductor in the first direction. It is designed to be connected.

Further, the coil unit according to the present invention is the coil unit according to the present invention described above, and the coil is a spiral coil.

Further, the coil unit according to the present invention is the coil unit according to the present invention, wherein the spiral coil is a single spiral coil, and the inner diameter side end portion is connected to the first conductor in the second direction and is outside. The radial end is connected to the first conductor in the first direction, and the second conductor in the first direction and the second conductor in the second direction are connected at the intersection at the intersection position.

Further, the coil unit according to the present invention is the coil unit according to the present invention, wherein the single spiral coil has a resonance capacitor connected between the inner diameter side end portion and the outer diameter side end portion.

Further, the coil unit according to the present invention is the coil unit according to the present invention, and the spiral coil is a double spiral coil in which a first spiral coil and a second spiral coil are doubly overlapped. 1 The inner diameter side end of the spiral coil is connected to the first conductor in the second direction, and the outer diameter side end of the first spiral coil is connected to the first conductor in the first direction, and the second spiral coil is connected. The inner diameter side end of the coil is connected to the first direction second conductor, and the outer diameter side end of the second spiral coil is connected to the second direction second conductor.

Further, in the coil unit according to the present invention, the first reciprocating line and the second reciprocating line are arranged orthogonally in the XY plane in the XYZ Cartesian coordinate system. ..

Further, in the coil unit according to the present invention, the first switch and the second switch are semiconductor switches, respectively, in the coil unit according to the present invention.

Further, the coil unit according to the present invention is the coil unit according to the present invention in which a ferrite plate is arranged adjacent to the coil.

Further, the non-contact power feeding device according to the present invention is the non-contact power feeding device based on the electromagnetic induction resonance method, in which the first reciprocating line is extended in the first direction and is arranged side by side in the second direction. A second round-trip line that extends in the second direction and is arranged side by side in the first direction and intersects the first round-trip line, respectively, and the first round-trip line and the second round-trip line. Select the connection state or disconnection state of each of the plurality of coils connected to the intersections of the above, the single power supply connected in parallel to the plurality of second round-trip lines, and the plurality of second round-trip lines. It has a plurality of first switchers for selecting the connection state or the disconnection state of each of the plurality of first reciprocating lines.

Further, in the non-contact power feeding device according to the present invention, in the above-mentioned non-contact power feeding device according to the present invention, each of the plurality of first reciprocating lines has a first-direction first conductor and a first-direction second conductor, respectively. Each of the plurality of second reciprocating lines has a second-direction first conductor and a second-direction second conductor, respectively, and each of the first-direction first conductors is used as an outward line and is described above. When the second conductor in the first direction is the return line, the first conductor in the second direction is the outbound line, and the second conductor in the second direction is the return line. The power supply is connected to the end of each of the above-mentioned second-direction first conductors and the above-mentioned second-direction second conductor, and the above-mentioned first switch is connected to the above-mentioned second-direction first conductor, respectively. The second switch is connected between the first conductor in the first direction and the second conductor in the first direction, respectively.

Further, in the non-contact power feeding device according to the present invention, in the above-mentioned non-contact power feeding device according to the present invention, the plurality of coils are a plurality of spiral coils.

Further, the non-contact power feeding device according to the present invention is the above-mentioned non-contact power feeding device according to the present invention, in which the plurality of spiral coils are single spiral coils, respectively, and the inner diameter side end portion is formed at each of the above-mentioned intersecting positions. The first conductor in the second direction is connected, the outer diameter side end is connected to the first conductor in the first direction, and the second conductor in the first direction and the second conductor in the second direction are connected to each of the above. It is connected at the intersection at the intersection of.

Further, in the non-contact power feeding device according to the present invention, in the above-mentioned non-contact power feeding device, the plurality of single spiral coils are located between the inner diameter side end portion and the outer diameter side end portion thereof. A resonance capacitor is connected to.

Further, the non-contact power feeding device according to the present invention is the non-contact power feeding device according to the present invention. In the coil, at each of the above crossing positions, the inner diameter side end of the first spiral coil is connected to the first conductor in the second direction, and the outer diameter side end of the first spiral coil is connected to the first conductor. The inner diameter side end of the second spiral coil is connected to the first conductor in the first direction, the outer diameter side end of the second spiral coil is connected to the second conductor in the first direction, and the outer diameter side end of the second spiral coil is connected to the second conductor in the second direction. It is connected to two conductors.

Further, in the non-contact power feeding device according to the present invention, in the non-contact power feeding device according to the present invention, the plurality of first reciprocating lines and the plurality of second reciprocating lines are respectively in the XY plane in the XYZ orthogonal coordinate system. They are arranged at right angles.

Further, in the non-contact power feeding device according to the present invention, in the above-mentioned non-contact power feeding device, the plurality of first switching devices and the plurality of second switching devices are semiconductor switches, respectively.

Further, the non-contact power feeding device according to the present invention is the non-contact power feeding device according to the present invention in which a ferrite plate is arranged adjacent to the coil.

Further, the non-contact power feeding device according to the present invention is the connection state and disconnection state between each of the plurality of first switching devices and each of the plurality of second switching devices in the above-mentioned non-contact power feeding device according to the present invention. And are sequentially switched to detect the presence or absence of a power receiving load in each of the plurality of coils.

Further, the non-contact power feeding device according to the present invention is the connection state and disconnection state between each of the plurality of first switching devices and each of the plurality of second switching devices in the above-mentioned non-contact power feeding device according to the present invention. And are switched in a time-division manner, and the power supply is energized from the power supply to the plurality of coils in a time-division manner.

Further, the non-contact power feeding device according to the present invention is the non-contact power feeding device according to the present invention, each of the plurality of first switching devices and each of the plurality of second switching devices according to the movement of the passive load. The coil that energizes according to the movement of the passive load is changed by switching between the connection state and the disconnection state.

Further, the non-contact power feeding device according to the present invention is further arranged adjacent to each of the above coils in the above-mentioned non-contact power feeding device according to the present invention, and a plurality of mobile detectors for detecting the presence or absence of a power receiving load. And have.

Further, the non-contact power feeding device according to the present invention is a non-contact power feeding device formed by forming a conductor pattern of a circuit configuration on a printed circuit board, and the above circuit configuration is the circuit configuration of the above-mentioned non-contact power feeding device according to the present invention. be.

Further, the non-contact power supply device according to the present invention is the non-contact power supply device according to the present invention, wherein the printed circuit board is formed by superimposing a double-sided printed circuit board and a three-layer power supply line board, and the double-sided printed circuit board is formed. The conductor pattern of the coil in the circuit configuration of the non-contact power supply device according to the present invention is formed on the surface of the above-mentioned three-layer power supply line substrate, and the coil in the circuit configuration of the non-contact power supply device according to the above-mentioned invention is excluded from the above-mentioned three-layer power supply line substrate. A conductor pattern is formed, and the double-sided printed circuit board and the three-layer power feeding line board are electrically connected by wiring.

Further, the non-contact power feeding device according to the present invention is the above-mentioned non-contact power feeding device according to the present invention in which a plurality of the printed circuit boards are connected.

Further, the non-contact power supply / reception system according to the present invention is a non-contact power supply / reception system in which power is supplied from the power supply coil to the power reception coil in a non-contact manner by an electromagnetic induction resonance method. The power feeding coil is used to energize the coil to supply power to the power receiving coil of the power receiving load.

Further, in the non-contact power supply / reception system according to the present invention, in the non-contact power supply / reception system according to the present invention, the power receiving load is an automobile or an electric device.

Further, the induction heating device according to the present invention is an induction heating device that heats a portion to be heated by induction heating, in which the coil in the non-contact power feeding device according to the present invention is used as an induction heating coil, and the coil is energized to be covered. It is designed to heat a heated object.

Further, the electromagnetic cooker according to the present invention is an electromagnetic cooker that heats and cooks a cooking utensil by induction heating. It is designed to heat cooking utensils by energizing them.

Further, in the electromagnetic cooker according to the present invention, the electromagnetic cooker according to the present invention controls the energization of the coil in a time-divided manner to control the heating distribution of the cooking utensil.

Since the present invention is configured as described above, even when a plurality of coils such as feeding coils are arranged over a wide area, the coils such as feeding coils at arbitrary locations are selectively energized. This is an excellent effect that the above-mentioned problems 1 and 2 can be solved.

Further, since the present invention is configured as described above, even when a plurality of coils such as feeding coils are arranged over a wide area, all the coils such as feeding coils are connected to the power supply. Therefore, it is not necessary to wire the connection wires as many as the number of coils, and the above-mentioned problem 3 can be solved, which is an excellent effect.

FIG. 1 is an explanatory diagram schematically showing a circuit configuration of a coil unit according to a first embodiment as an example of the embodiment of the present invention. FIG. 2 is an explanatory diagram schematically showing a circuit configuration of a coil unit according to a second embodiment as an example of the embodiment of the present invention. FIG. 3 is an explanatory diagram schematically showing a circuit configuration of a coil unit according to a third embodiment as an example of the embodiment of the present invention. FIG. 4 is an explanatory diagram schematically showing a circuit configuration of a non-contact power feeding device according to a fourth embodiment as an example of the embodiment of the present invention. FIG. 5 is an explanatory diagram schematically showing a circuit configuration of a non-contact power feeding device according to a fifth embodiment as an example of the embodiment of the present invention. FIG. 6 is a timing chart showing the operation of the non-contact power feeding device according to the fourth embodiment and the fifth embodiment. FIG. 7 is a timing chart showing the operation of the non-contact power feeding device according to the fourth embodiment and the fifth embodiment. FIG. 8 is an explanatory diagram schematically showing a circuit configuration of a non-contact power feeding device according to a sixth embodiment as an example of the embodiment of the present invention. FIG. 9 is an explanatory diagram schematically showing a circuit configuration of a non-contact power feeding device according to a seventh embodiment as an example of the embodiment of the present invention. FIG. 10 is an explanatory diagram schematically showing a circuit configuration of a non-contact power feeding device according to an eighth embodiment as an example of the embodiment of the present invention. FIG. 11 is a timing chart showing the operation of the non-contact power feeding device according to the seventh embodiment and the eighth embodiment. FIG. 12 is an explanatory diagram schematically showing a circuit configuration of a non-contact power feeding device according to a ninth embodiment as an example of the embodiment of the present invention. FIG. 13 is an explanatory diagram schematically showing a circuit configuration of a non-contact power feeding device according to a tenth embodiment as an example of the embodiment of the present invention. FIG. 14 is an explanatory diagram schematically showing a circuit configuration of a non-contact power feeding device according to an eleventh embodiment as an example of the embodiment of the present invention. 15 (a) and 15 (b) are explanatory views schematically showing a circuit configuration of a non-contact power feeding device according to a twelfth embodiment as an example of the embodiment of the present invention. Note that FIG. 15 (b) is a view taken along the arrow D of FIG. 15 (a). FIG. 16 shows the first switch and the second switch in the coil unit according to the first embodiment to the third embodiment and the non-contact power feeding device according to the fourth embodiment to the twelfth embodiment. It is explanatory drawing which shows schematically the circuit structure of the semiconductor switch which can be used. 17 (a) and 17 (b) are modified examples of the coil unit according to the first embodiment to the third embodiment and the non-contact power feeding device according to the fourth embodiment to the twelfth embodiment. It is explanatory drawing which shows schematically. Note that FIG. 17 (b) is a view taken along the line E of FIG. 17 (a). FIG. 18 is an explanatory diagram schematically showing a circuit configuration of a non-contact power feeding device according to a thirteenth embodiment as an example of the embodiment of the present invention. Note that FIG. 18 shows the surface of the printed circuit board according to the thirteenth embodiment. FIG. 19 is an explanatory diagram schematically showing a circuit configuration of a non-contact power feeding device according to a thirteenth embodiment as an example of the embodiment of the present invention. Note that FIG. 19 shows the back surface of the printed circuit board according to the thirteenth embodiment. FIG. 20 is an explanatory diagram schematically showing a circuit configuration of a non-contact power feeding device according to a thirteenth embodiment as an example of the embodiment of the present invention. Note that FIG. 20 shows a cross-sectional view taken along the line FF in FIG. FIG. 21 is an explanatory diagram schematically showing a circuit configuration of a non-contact power feeding device according to a fourteenth embodiment as an example of the embodiment of the present invention. FIG. 22 is an explanatory diagram schematically showing the configuration of the non-contact power supply / reception system according to the fifteenth embodiment as an example of the embodiment of the present invention. FIG. 23 is an explanatory diagram schematically showing the configuration of the non-contact power supply / reception system according to the sixteenth embodiment as an example of the embodiment of the present invention. FIG. 24 is an explanatory diagram schematically showing the configuration of the non-contact power supply / reception system according to the seventeenth embodiment as an example of the embodiment of the present invention. FIG. 25 is an explanatory diagram schematically showing the configuration of the induction heating device according to the eighteenth embodiment as an example of the embodiment of the present invention. FIG. 26 is an explanatory diagram schematically showing the configuration of the electromagnetic cooker according to the nineteenth embodiment as an example of the embodiment of the present invention. FIG. 27 is an explanatory diagram schematically showing the configuration of the electromagnetic cooker according to the twentieth embodiment as an example of the embodiment of the present invention.

Hereinafter, examples of embodiments of the coil unit, the non-contact power supply device, the non-contact power supply / reception system, the induction heating device, and the electromagnetic cooker according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the section "Modes for Carrying Out the Invention", the same reference numerals are given to the configurations and actions that are the same as or equivalent to the configurations and actions described with reference to the respective figures. The detailed configuration thereof and the description of their actions will be omitted as appropriate.

(I) First Embodiment of the present invention

(I-1) Configuration

First, as an example of the embodiment of the present invention, the coil unit according to the first embodiment will be described with reference to FIG.

Here, FIG. 1 shows an explanatory diagram schematically showing the circuit configuration of the coil unit according to the first embodiment as an example of the embodiment of the present invention.

The coil unit 10 according to the first embodiment of the present invention has a first reciprocating parallel line 12 extending in the X direction and a reciprocating line extending in the Y direction as a reciprocating line arranged parallel to the XY plane in the XYZ Cartesian coordinate system. The two reciprocating parallel lines 14 are arranged orthogonally to each other.

Then, a round spiral coil 16 which is a round single spiral coil is arranged as a coil at the intersection position A between the first reciprocating parallel line 12 and the second reciprocating parallel line 14 which are orthogonal to each other.

Here, in order to facilitate the understanding of the present invention, for convenience of explanation, the first linear conductor 12a in the X direction (shown by a solid line in FIG. 1), which is a conductor constituting the first reciprocating parallel line 12, is shown. The X-direction second linear conductor 12b (indicated by a broken line in FIG. 1), which is a conductor constituting the first reciprocating parallel line 12 as an outward line, is used as a return line, and the second reciprocating parallel line 14 is used. The Y-direction first linear conductor 14a (shown by a solid line in FIG. 1), which is a constituent conductor, is used as the outward line, and the Y-direction second linear conductor 14b, which is a conductor constituting the second reciprocating parallel line 14, is used as the outward line. (Indicated by a broken line in FIG. 1) will be described as a return route.

The AC power source 18, which is a power source, is connected to the ends of the first linear conductor 14a in the Y direction and the second linear conductor 14b in the Y direction on the second reciprocating parallel line 14 away from the intersection position A.

Further, a first switch 20 for selecting a connected state or a disconnected state is connected to the first linear conductor 14a in the Y direction.

Therefore, the first switch 20 functions as a power switch for controlling on / off of energization from the AC power supply 18.

On the other hand, the end portions of the X-direction first linear conductor 12a and the X-direction second linear conductor 12b constituting the first reciprocating parallel line 12 away from the intersection position A are second to select a connected state or a disconnected state. It is short-circuited by the switch 22.

Further, in the round spiral coil 16, the inner diameter side end portion 16a located at the most central portion thereof is connected to the first linear conductor 14a in the Y direction, and the outer diameter side end portion located at the outermost edge portion thereof. 16b is connected to the first linear conductor 12a in the X direction.

Further, the second linear conductor 12b in the X direction and the second linear conductor 14b in the Y direction are connected at an intersection B at the intersection position A.

(I-2) Operation

In the above configuration, first, the first case in which both the first switch 20 and the second switch 22 in the coil unit 10 are connected will be described.

In this first case, since the first switch 20 is in the connected state, the alternating current, which is the current output from the alternating current power source 18, flows through the first linear conductor 14a in the Y direction and ends on the inner diameter side. It reaches the portion 16a, further flows the round spiral coil 16 from the inner diameter side end portion 16a to the outer diameter side end portion 16b, and flows from the outer diameter side end portion 16b to the first linear conductor 12a in the X direction. , Passes through the outbound route of the round-trip line and flows to the second switch 22 (see the solid line arrow in FIG. 1).

Here, since the second switch 22 is in the connected state, the alternating current that has passed through the outward line of the reciprocating line flows through the second linear conductor 12b in the X direction and reaches the intersection point B, from the intersection point B to Y. It flows to the second linear conductor 14b in the direction, passes through the return line of the round-trip line, and returns to the AC power supply 18 (see the broken line arrow in FIG. 1).

Therefore, in the first case described above, an alternating current can be applied to the round spiral coil 16.

Next, a second case in which both the first switch 20 and the second switch 22 of the coil unit 10 are in the disconnected state or one of them is in the disconnected state will be described.

In this second case, no alternating current flows through the reciprocating line, and no alternating current is applied to the round spiral coil 16.

(I-3) Action effect

Therefore, according to the coil unit 10 described above, the circular spiral coil 16 can be energized with an alternating current only when both the first switch 20 and the second switch 22 are in the connected state. become able to.

Therefore, when the coil unit 10 is used to configure a non-contact power feeding device, a non-contact power receiving / feeding system, an induction heating device, or an electromagnetic cooker, the first reciprocating parallel line 12 and the second reciprocating parallel line 14 are X-. A plurality of circular spiral coils 16 are arranged in a Y matrix shape, and round spiral coils 16 are arranged in an XY matrix shape at each intersection position A of the first reciprocating parallel line 12 and the second reciprocating parallel line 14. As a result, it is possible to selectively energize only the round spiral coil 16 at an arbitrary position corresponding to the position of an arbitrary power receiving load.

That is, even when the coil unit 10 is arranged over the entire area of a wide area, the circular spiral coil 16 at an arbitrary position can be selectively energized.

Further, when the coil unit 10 is arranged over the entire wide area as described above, a plurality of the first reciprocating parallel lines 12 and the second reciprocating parallel lines 14 are arranged in an XY matrix as described above. This eliminates the need to wire as many connection lines as the number of round spiral coils 16 from each of all the round spiral coils 16 to the AC power supply 18.

(II) Second Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the coil unit according to the second embodiment will be described with reference to FIG.

Here, FIG. 2 shows an explanatory diagram schematically showing the circuit configuration of the coil unit according to the second embodiment as an example of the embodiment of the present invention.

Comparing the coil unit 30 according to the second embodiment and the coil unit 10 according to the first embodiment, the coil unit 10 includes the round spiral coil 16 as a coil, whereas the coil unit 30 is provided. Is different only in that it comprises a quadrangular spiral coil 32, which is a quadrangular single vortex coil as a coil.

The shape of the spiral coil may be a quadrangle like the quadrangular spiral coil 32 in the coil unit 30, and the coil unit 30 also operates in the same manner as the coil unit 10 and has the same effect.

(III) Third Embodiment of the present invention

(III-1) Composition

Next, as an example of the embodiment of the present invention, the coil unit according to the third embodiment will be described with reference to FIG.

Here, FIG. 3 shows an explanatory diagram schematically showing the circuit configuration of the coil unit according to the third embodiment as an example of the embodiment of the present invention.

The coil unit 40 according to the third embodiment is arranged at the intersection position A between the first reciprocating parallel line 12 and the second reciprocating parallel line 14 which are orthogonal to each other when compared with the coil unit 10 according to the first embodiment. It differs from the coil unit 10 in that a round double spiral coil 42, which is a round double spiral coil, is arranged in place of the round spiral coil 16.

The round double spiral coil 42 includes a first round spiral coil 44 (shown by a solid line in FIG. 3) which is an outward line on the round-trip line and a second round spiral coil 46 (which is shown by a solid line in FIG. 3) which is a return line on the round-trip line. (Indicated by a broken line) in the above.

The inner diameter side end 44a located at the outermost center of the first round spiral coil 44 is connected to the first linear conductor 14a in the Y direction, and the outer diameter side located at the outermost edge thereof. The end portion 44b is connected to the first linear conductor 12a in the X direction.

Further, in the second round spiral coil 46, the inner diameter side end portion 46a located at the most central portion thereof is connected to the second linear conductor 12b in the X direction, and the outer diameter side located at the outermost edge portion thereof. The end portion 46b is connected to the second linear conductor 14b in the Y direction.

(III-2) Operation

In the above configuration, first, the first case in which both the first switch 20 and the second switch 22 in the coil unit 40 are connected will be described.

In this first case, since the first switch 20 is in the connected state, the AC current output from the AC power supply 18 flows through the first linear conductor 14a in the Y direction to the inner diameter side end portion 44a. After reaching, the first round spiral coil 44 flows from the inner diameter side end 44a to the outer diameter side end 44b, and flows from the outer diameter side end 44b to the first linear conductor 12a in the X direction. It passes through the outbound route of the round-trip line and flows to the second switch 22 (see the solid line arrow in FIG. 3).

Here, since the second switch 22 is in the connected state, the alternating current that has passed through the outward line of the reciprocating line flows through the second linear conductor 12b in the X direction and reaches the inner diameter side end portion 46a, and further. The second round spiral coil 46 flows from the inner diameter side end portion 46a to the outer diameter side end portion 46b, flows from the outer diameter side end portion 46b to the second linear conductor 14b in the Y direction, and passes through the return line of the reciprocating line. Then, it returns to the AC power supply 18 (see the broken line arrow in FIG. 3).

Therefore, in the first case described above, an alternating current can be applied to the first round spiral coil 44 and the second round spiral coil 46 constituting the round double spiral coil 42.

Next, a second case in which both the first switch 20 and the second switch 22 of the coil unit 40 are in the disconnected state or one of them is in the disconnected state will be described.

In this second case, an alternating current does not flow in the reciprocating line, and an alternating current is energized in the first round spiral coil 44 and the second round spiral coil 46 constituting the round double spiral coil 42. Not done.

(III-3) Action effect

Since the coil unit 40 operates in the same manner as the coil unit 10 as described above, the same operation and effect as the coil unit 10 can be obtained.

(IV) Fourth Embodiment of the present invention

(IV-1) Configuration

Next, as an example of the embodiment of the present invention, the non-contact power feeding device according to the fourth embodiment will be described with reference to FIG.

Here, FIG. 4 shows an explanatory diagram schematically showing the circuit configuration of the non-contact power feeding device according to the fourth embodiment as an example of the embodiment of the present invention.

The non-contact power feeding device 50 according to the fourth embodiment is an example in which the coil unit 10 is used as a component to configure a non-contact power feeding device that feeds power from the feeding coil to the power receiving coil in a non-contact manner by an electromagnetic induction resonance method. Shows.

More specifically, the non-contact power feeding device 50 has n first reciprocating parallel lines 12 extending in the X direction in the Y direction (row direction) in the XY matrix (in the example shown in FIG. 4). Is "n = 4".) They are arranged side by side.

Therefore, four second switchers 22 are arranged corresponding to each of the four first reciprocating parallel lines 12, which are indicated by SY1, SY2, SY3, and SYN in FIG.

On the other hand, the non-contact power feeding device 50 has n (in the example shown in FIG. 4) of a plurality of second reciprocating parallel lines 14 extending in the Y direction in the X direction (column direction) in the XY matrix. n = 6 ".) They are arranged side by side.

Therefore, six first switchers 20 are arranged corresponding to each of the six second reciprocating parallel lines 14 as shown by SX1, SX2, SX3, SX4, SX5, and SXn in FIG.

Then, at each intersection position A where the four first reciprocating parallel lines 12 and the six second reciprocating parallel lines 14 intersect, the round spiral coils 16 are arranged in an XY matrix.

In the example shown in FIG. 4, since there are 24 intersection positions A, a total of 24 round spiral coils 16 are connected to the outward line in an XY matrix by XY matrix arrangement of 4 rows and 6 columns. Has been done.

Here, focusing on each of the 24 round spiral coils 16, in each round spiral coil 16, the inner diameter side end portion 16a located at the most central portion thereof is connected to the first linear conductor 14a in the Y direction. The outer diameter side end portion 16b located at the outermost edge thereof is connected to the first linear conductor 12a in the X direction, and further, the second linear conductor 12b in the X direction and the second linear conductor in the Y direction. It is connected to 14b at the intersection B at the intersection position A.

That is, each round spiral coil 16 is connected so as to be in series between the reciprocating lines arranged in the Y direction (row direction) in the XY matrix and the X direction (column direction) in the XY matrix. ing.

Further, the AC power supply 18 is connected to the ends of the Y-direction first linear conductor 14a and the Y-direction second linear conductor 14b with respect to each of the six second reciprocating parallel lines 14.

That is, the six second reciprocating parallel lines 14 are connected in parallel to the AC power supply 18, and in the non-contact power feeding device 50, power is supplied by the AC power supply 18, which is a single power source.

In the non-contact power feeding device 50, the coil unit 10 is configured in each of the 24 round spiral coils 16, and each of the 24 round spiral coils 16 functions as a feeding coil by the electromagnetic induction resonance method. do.

In FIG. 4, reference numeral C indicates a resonance capacitor.

(IV-2) Operation

In the above configuration, in the non-contact power feeding device 50, the connected state and the disconnected state are selectively switched for each of the six first switchers 20 (SX1, SX2, SX3, SX4, SX5, SXn). Any round shape among the 24 round spiral coils 16 by selectively switching between the connected state and the disconnected state for each of the four second switchers 22 (SY1, SY2, SY3, SYN). Only the spiral coil 16 can be energized.

For example, when the power receiving coil 52 of the power receiving load is in the position shown in FIG. 4, only the SX4 is connected to the first switch 20 and all the others are disconnected, and the second switch 22 is connected. Sets only SY3 to the connected state and all others to the disconnected state.

By selectively switching between the connected state and the disconnected state in the first switch 20 and the second switch 22 described above, the alternating current output from the alternating current power source 18 is the round spiral coil 16 corresponding to the power receiving coil 52. (The round spiral coil 16 in the third row (SY3) and the fourth column (SX4) in the XY matrix arrangement) is energized, and the round spiral coil 16 functions as a feeding coil for the power receiving coil 52.

(IV-3) Action Effect

Therefore, according to the non-contact power feeding device 50 described above, the plurality of round spiral coils 16 are connected by selectively switching between the connected state and the disconnected state of the first switch 20 and the second switch 22. Among them, it is possible to selectively energize only the round spiral coil 16 at an arbitrary position corresponding to the position of the power receiving coil in an arbitrary power receiving load to supply power to the power receiving coil.

That is, even when the round spiral coil 16 is arranged over the entire wide area in the non-contact power feeding device 50, it becomes possible to selectively energize only the round spiral coil 16 at an arbitrary position.

Further, as described above, when the round spiral coil 16 is arranged over the entire wide area in the non-contact power feeding device 50, the first reciprocating parallel line 12 and the second reciprocating parallel line 14 are provided as described above. By arranging a plurality of them in an XY matrix, it is not necessary to wire as many connection lines as the number of round spiral coils 16 from each of all the round spiral coils 16 to the AC power supply 18.

For example, in the example shown in FIG. 4, since there are 24 round spiral coils 16, if the connection lines are wired from each of the round spiral coils 16 to the power supply 18 by the number of the round spiral coils 16, 24 You will need a connecting wire for the book.

However, in the non-contact power feeding device 50, it is only necessary to wire a total of 10 connecting lines of the four first reciprocating parallel lines 12 and the six second reciprocating parallel lines 14.

(V) Fifth Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the non-contact power feeding device according to the fifth embodiment will be described with reference to FIG.

Here, FIG. 5 shows an explanatory diagram schematically showing the circuit configuration of the non-contact power feeding device according to the fifth embodiment as an example of the embodiment of the present invention.

Comparing the non-contact power feeding device 60 according to the fifth embodiment and the non-contact power feeding device 50 according to the fourth embodiment, the non-contact power feeding device 50 uses the coil unit 10 as a component. The only difference is that the non-contact power feeding device 60 uses the coil unit 40 as a component.

The shape of the spiral coil may be the round double spiral coil 42 in the non-contact power feeding device 60, and the round double spiral coil 42 is in the Y direction (row direction) in the XY matrix and the X direction (in the row direction) in the XY matrix. The AC power supply 18 is connected in series between the reciprocating lines arranged in the column direction), and the AC power supply 18 is connected to the first linear conductor 14a in the Y direction and the Y direction for each of the six second reciprocating parallel lines 14. It is connected to the end of the second linear conductor 14b, and the non-contact power feeding device 60 operates in the same manner as the non-contact power feeding device 50, and the same operation and effect can be obtained.

That is, when the power receiving coil 52 of the power receiving load is in the position shown in FIG. 5, only the SX4 is connected to the first switch 20 and all the others are disconnected, and the second switch 22 is connected. Sets only SY3 to the connected state and all others to the disconnected state.

By selectively switching between the connection state and the disconnection state between the first switch 20 and the second switch 22 described above, the AC current output from the AC power supply 18 is a round double spiral corresponding to the power receiving coil 52. Only the coil 42 (the round double spiral coil 42 in the third row (SY3) and the fourth column (SX4) in the XY matrix arrangement) is energized, and the round double spiral coil 42 supplies power to the power receiving coil 52. Functions as a coil.

In the non-contact power feeding device 50, since all the return lines of the reciprocating line shown by the broken line are connected, a quadrangular loop circuit is formed in the vicinity of the round spiral coil 16 and unnecessary induction is provided in this loop circuit. Current flows.

However, according to the non-contact power feeding device 60, since the loop circuit that is always connected can be eliminated, it is possible to prevent the generation of an unnecessary induced current.

(VI) Description of Power Received Load Detection Operation in Non-contact Power Supply Devices 50, 60

Next, with reference to FIG. 6, the presence / absence of a power receiving load in the non-contact power feeding devices 50 and 60, and more specifically, a process of detecting a place where the power receiving load provided with the power receiving coil 52 is arranged will be described.

Note that FIG. 6 shows a timing chart showing the operation of the non-contact power feeding device 50 according to the fourth embodiment and the non-contact power feeding device 60 according to the fifth embodiment.

In the non-contact power feeding devices 50 and 60, the following processing operations are performed in order to detect the presence / absence of a power receiving load, and more specifically, the location where the power receiving load provided with the power receiving coil 52 is arranged.

That is, the connection state (hereinafter, appropriately referred to as “on”) and the disconnection state (hereinafter, appropriately referred to as “off”) between the first switch 20 and the second switch 22 are selectively switched. Then, a weak AC current is sequentially passed one by one to all the round spiral coils 16 (round double spiral coils 42), which are the feeding coils arranged in a matrix, for a short time, and at that time, the AC power supply is supplied. By detecting the change in the load impedance from the 18 side, the presence or absence of a power receiving load is detected.

In addition, this processing operation is a method generally performed conventionally in the processing for detecting the presence or absence of a pot placed on an electromagnetic cooker, but the non-contact power feeding device 50 and the non-contact power feeding device are described below. It will be described in detail in relation to 60.

Here, in the non-contact power feeding device 50 and the non-contact power feeding device 60, the following processing operations 1 to 5 described with reference to FIG. 6 are sequentially performed.

Processing operation 1: First, the first switch 20 of the SX1 is turned on, and during this on period, the second switch 22 of SY1 to SYN is sequentially turned on / off in order, and the first switch 20 of the SX1 is used. The presence or absence of a load is detected for n round spiral coils 16 (round double spiral coils 42) connected in the Y direction (row direction).

Processing operation 2: Similar to the above processing operation 1, n round spiral coils 16 (round double spiral coils 42) in the Y direction (row direction) connected to the first switch 20 of SX2 to SXn. Detects the presence or absence of a load.

Processing operation 3: When no load is detected in the processing operations 1 to 2 described above, the AC power supply 18 is left off because there is no power receiving load to be supplied.

Processing operation 4: When one load is detected in the above-mentioned processing operations 1 to 2, only the first switch 20 and the second switch 22 corresponding to the detected location are turned on. The AC power supply 18 is turned on. As a result, only the round spiral coil 16 (round double spiral coil 42), which is the feeding coil corresponding to the detected location, is energized, and power is supplied to the receiving coil of the power receiving load, which is the load at the detected location. ..

Processing operation 5: When a plurality of loads are detected in the above-mentioned processing operations 1 to 2, the above-mentioned processing operation 4 is performed according to the priority set in advance in preparation for that case.

The processing operations 1 to 5 described above are repeated at preset time intervals to detect the position of the power receiving load at each preset time interval and supply power to the detected power receiving load. be able to.

(VII) Description of time-division feeding operation in contactless feeding devices 50 and 60

Next, with reference to FIG. 7, a time-division power feeding operation in the non-contact power feeding devices 50 and 60, and more specifically, a time-division power feeding operation to the power receiving coil 52 of the power receiving load will be described.

Note that FIG. 7 shows a timing chart showing the operation of the non-contact power feeding device 50 according to the fourth embodiment and the non-contact power feeding device 60 according to the fifth embodiment. With reference to this, an operation of supplying power to the power receiving coil 52 of the power receiving load in a time-division manner will be described.

That is, when M power-receiving loads are detected as a plurality of power-receiving loads in the processing operations 1 to 2 in the above-mentioned "Explanation of the power-receiving load detection operation in the (VI) non-contact power feeding devices 50 and 60". , The preset unit power supply time α is divided into 1 / M hours, and the first switch 20 and the second switch 22 are controlled on / off by time division, and M power supply coils (round spiral coil) are controlled. 16. The round double spiral coil 42) is energized so as to make a round in order of α / M time, and power is sequentially supplied to the plurality of power receiving coils 52.

By performing such a processing operation, it becomes possible to evenly supply power to the power receiving coils 52 of all the power receiving loads.

(VIII) Sixth Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the non-contact power feeding device according to the sixth embodiment will be described with reference to FIG.

Here, FIG. 8 shows an explanatory diagram schematically showing the circuit configuration of the non-contact power feeding device according to the sixth embodiment as an example of the embodiment of the present invention.

The sixth embodiment shown in FIG. 8 has the same configuration as the non-contact power feeding device 50 according to the fourth embodiment, but differs only in its operation.

That is, in the sixth embodiment, when the received power load moves, the circular spiral coil 16 that energizes following the movement is changed.

Here, the processing operation 1 to the processing operation 2 in the above-mentioned "Explanation of the power receiving load detection operation in the (VI) non-contact power feeding devices 50 and 60" can detect the moving location even when the power receiving load moves. , Only the round spiral coil 16 corresponding to the detected moving place is energized.

For example, in the example shown in FIG. 8, as the power receiving load provided with the power receiving coil 52 moves, only the first switch 20 of the SX3 and the second switch 22 of the SYN are turned on, and the second switch in the XY matrix arrangement is turned on. Only the round spiral coil 16 in the third column (SX3) of the nth row (SYn) is energized, and then only the first switch 20 of the SX4 and the second switch 22 of the SY3 are turned on, and the XY matrix is turned on. Only the round spiral coil 16 in the third row (SY3) and the fourth column (SX4) in the arrangement is energized, and then only the first switch 20 of the SX5 and the second switch 22 of the SY2 are turned on, and X -Only the round spiral coil 16 in the second row (SY2) and the fifth column (SX5) in the Y matrix arrangement is energized to supply power to the power receiving coil 52.

(IX) Seventh Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the non-contact power feeding device according to the seventh embodiment will be described with reference to FIG.

Here, FIG. 9 shows an explanatory diagram schematically showing the circuit configuration of the non-contact power feeding device according to the seventh embodiment as an example of the embodiment of the present invention.

Comparing the non-contact power feeding device 70 according to the seventh embodiment and the non-contact power feeding device 50 according to the fourth embodiment, the non-contact power feeding device 50 uses the coil unit 10 as a component. The only difference is that the non-contact power feeding device 70 uses the coil unit 30 as a component, and the mobile body detector 72 that detects the presence or absence of a power receiving load is provided adjacent to the square spiral coil 32. There is.

The shape of the spiral coil may be the quadrangular spiral coil 32 in the non-contact power feeding device 70, and the non-contact power feeding device 70 also operates in the same manner as the non-contact power feeding device 50, and the same operation and effect can be obtained.

Further, the mobile body detector 72 may be configured by, for example, an optical sensor or the like, and detects the presence or absence of a passive load.

In the non-contact power feeding device 70, a moving body detector 72 is arranged adjacent to each quadrangular spiral coil 32, and the presence or absence of a passive load is detected by the moving body detector 72. (VI) It is not necessary to perform the processing operation 1 to the processing operation 2 in "Explanation of the power receiving load detection operation in the non-contact power feeding devices 50 and 60".

In FIG. 9, a power receiving load having a power receiving coil 52 having an area corresponding to the area of a plurality of (four in the example shown in FIG. 9) square spiral coil 32 moves to an arbitrary position. The on / off control between the first switch 20 and the second switch 22 at the time of the operation is shown.

Specifically, first, the power received load by the moving object detector 72 is the third row (SY3) third column (SX3) th row, the third row (SY3) fourth column (SX4) th, in the XY matrix arrangement. When it is detected that it is in the position of the second row (SY2), the third column (SX3), and the second row (SY2), the fourth column (SX4) (the position shown by the broken line in FIG. 9), Only the first switch 20 of the SX3 and SX4 and the second switch 22 of the SY3 and SY2 are turned on, and the third row (SY3), the third column (SX3), and the third row (SY3) in the XY matrix arrangement are turned on. ) Only the four square spiral coils 32 in the 4th column (SX4), the 2nd row (SY2), the 3rd column (SX3), and the 2nd row (SY2), the 4th column (SX4) are energized to receive power. Power is supplied to the coil 52.

After that, the power received load by the mobile detector 72 is the third row (SY3), the fourth column (SX4), the third row (SY3), the fifth column (SX5), and the second row (SX5) in the XY matrix arrangement. SY2) When it is detected that the user has moved to the position of the 4th column (SX4) and the 5th column (SX5) of the 2nd row (SY2) (the position shown by the solid line in FIG. 9), the SX3 is the third. 1 Turn off the switch 20 and turn on the first switch 20 of the SX5, and in the XY matrix arrangement, the third row (SY3), the fourth column (SX4), and the third row (SY3), the fifth. Only the four square spiral coils 32 in the column (SX5), the second row (SY2), the fourth column (SX4), and the second row (SY2), the fifth column (SX5) are energized to the power receiving coil 52. Power.

(X) Eighth Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the non-contact power feeding device according to the eighth embodiment will be described with reference to FIG.

Here, FIG. 10 shows an explanatory diagram schematically showing the circuit configuration of the non-contact power feeding device according to the eighth embodiment as an example of the embodiment of the present invention.

Comparing the non-contact power feeding device 80 according to the eighth embodiment and the non-contact power feeding device 70 according to the seventh embodiment, the non-contact power feeding device 70 connects the square spiral coil 32 to the crossing position A. On the other hand, only in the point where the non-contact power feeding device 80 connects the square double spiral coil 82, which is a square double spiral coil corresponding to the round double spiral coil 42, as a coil at the intersection position A. It's different.

Here, the round double spiral coil 42 and the quadrangular double spiral coil 82 have different shapes such as a round shape and a quadrangular shape, but are the same in other configurations. Therefore, FIGS. 3 and 10 show. The corresponding configurations are shown using the same reference numerals.

Even in such a non-contact power feeding device 80, the operation is the same as that of the non-contact power feeding device 70, and the same operation and effect can be obtained.

According to the non-contact power feeding device 80, it is possible to reduce unnecessary induced current paths by the loop circuit configured by the ground line.

(XI) Description of energization operation in non-contact power feeding devices 70 and 80

Next, the processing of the energization operation in the non-contact power feeding devices 70 and 80 will be described with reference to FIG.

Note that FIG. 11 shows a timing chart showing the operation of the non-contact power feeding device 70 according to the seventh embodiment and the non-contact power feeding device 80 according to the eighth embodiment.

In the non-contact power feeding device 70 (non-contact power feeding device 80), the moving body detector 72 is arranged adjacent to all of the respective square swirl coils 32 (square double swirl coils 82).

Therefore, each moving body detector 72 disengages the moving passive load from the square spiral coil 32 (square double spiral coil 82) on the rear side in the traveling direction, and the square spiral coil 32 (square double spiral coil 32) on the front side in the traveling direction. When it is detected that the coil is mounted on the spiral coil 82), the energization of the square spiral coil 32 (square double spiral coil 82) on the rear side in the traveling direction is cut off, and the square spiral on the front side in the traveling direction is cut off. Energization of the coil 32 (square double spiral coil 82) is started.

Hereinafter, the operation of switching the energization to the quadrangular spiral coil 32 (square double spiral coil 82) will be described with reference to FIGS. 9 and 10 together with FIG. 11.

Processing operation 1: As shown in FIG. 9 (FIG. 10), a power receiving load provided with a power receiving coil 52 having a size equivalent to four square spiral coils 32 (square double spiral coil 82) moves from left to right. If this is the case, the square spiral coil 32 (square) in the third row (SY3), third column (SX3), and second row (SY2), third column (SX3), which is on the rear side in the traveling direction of the power receiving load. The moving body detector 72 (rear row moving body detector) adjacent to the double spiral coil 82) has a power receiving load in the third row (SY3), the third column (SX3), and the second row (SY2), the third column ( SX3) It detects that it is out of the square swirl coil 32 (square double swirl coil 82) of the second eye, that is, the switching of the detection result of the moving body detector 72 (back row moving body detector) from on to off.

Processing operation 2: The first switch 20 (back row power switch) of the SX3 is turned off according to the switching of the detection result of the moving body detector 72 (back row moving body detector) in the processing operation 1 from on to off. .. At this time, a moving object is detected adjacent to the square spiral coil 32 (square double spiral coil 82) in the third row (SY3), the fourth column (SX4), and the second row (SY2), the fourth column (SX4). The vessel 72 (middle row moving object detector) remains on.

Processing operation 3: The first switch 20 (middle row power switch) of the SX4 is turned off according to the switching of the detection result of the moving body detector 72 (back row moving body detector) in the processing operation 1 from on to off. do.

Processing operation 4: Square spiral coil 32 (square double spiral) in the 3rd row (SY3), 5th column (SX5) and 2nd row (SY2), 5th column (SX5), which is on the front side in the traveling direction of the power receiving load. The moving body detector 72 (front row moving body detector) adjacent to the coil 82) has a power receiving load of the third row (SY3), the fifth column (SX5), and the second row (SY2), the fifth column (SX5). When it is mounted on the square swirl coil 32 (square double swirl coil 82), that is, when the detection result of the moving body detector 72 (front row moving body detector) is switched from off to on, the first switch of the SX4 20 (middle row power switch) and the first switch 20 (front row power switch) of the SX5 are turned on.

In the processing operation 1, when the moving body detector 72 (back row moving body detector) is off and the moving body detector 72 (front row moving body detector) is already on, the moving body is turned on. After the detector 72 (back row moving object detector) is turned off, when a preset short time t elapses, the first switch 20 (middle row power switch) of the SX4 and the first switch of the SX5 Turn on 20 (front row power switch).

(XII) A ninth embodiment of the present invention

Next, as an example of the embodiment of the present invention, the non-contact power feeding device according to the ninth embodiment will be described with reference to FIG.

Here, FIG. 12 shows an explanatory diagram schematically showing the circuit configuration of the non-contact power feeding device according to the ninth embodiment as an example of the embodiment of the present invention.

The non-contact power feeding device 90 according to the ninth embodiment shows a state in which the conductor pattern of the circuit configuration shown in the non-contact power feeding device 70 is formed on the double-sided printed circuit board 92.

The conductor pattern 94 shown by the solid line in FIG. 9 is the conductor pattern formed on the front surface of the double-sided printed circuit board 92, while the conductor pattern 96 shown by the broken line in FIG. 9 is the conductor formed on the back surface of the double-sided printed circuit board 92. It is a pattern.

By making the circuit configuration shown in the non-contact power feeding device 70 into a printed circuit board like the non-contact power feeding device 90, a thin circuit structure can be manufactured with high accuracy and at low cost.

(XIII) A tenth embodiment of the present invention

Next, as an example of the embodiment of the present invention, the non-contact power feeding device according to the tenth embodiment will be described with reference to FIG.

Here, FIG. 13 shows an explanatory diagram schematically showing the circuit configuration of the non-contact power feeding device according to the tenth embodiment as an example of the embodiment of the present invention.

The non-contact power feeding device 100 according to the ninth embodiment shows a state in which the conductor pattern of the circuit configuration shown in the non-contact power feeding device 60 is formed on the double-sided printed circuit board 102.

The conductor pattern 104 shown by the solid line in FIG. 10 is the conductor pattern formed on the front surface of the double-sided printed circuit board 102, while the conductor pattern 106 shown by the broken line in FIG. 9 is the conductor formed on the back surface of the double-sided printed circuit board 102. It is a pattern.

In the non-contact power feeding device 90, since the conductor pattern of the return line of the reciprocating line shown by the broken line is connected by all lines, a quadrangular loop circuit is formed near the flat quadrangular spiral coil 32 (square flat vortex coil). It is formed and an unnecessary induced current flows through this loop circuit.

However, according to the non-contact power feeding device 100, it is possible to eliminate the loop circuit flowing through the non-energized reciprocating line and eliminate the loop circuit that is always connected, so that it is possible to prevent the generation of unnecessary induced current. It will be like.

(XIV) Eleventh Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the non-contact power feeding device according to the eleventh embodiment will be described with reference to FIG.

Here, FIG. 14 shows an explanatory diagram schematically showing the circuit configuration of the non-contact power feeding device according to the eleventh embodiment as an example of the embodiment of the present invention.

Comparing the non-contact power feeding device 110 according to the eleventh embodiment and the non-contact power feeding device 50 according to the fourth embodiment, it is not only in that the non-contact power feeding device 110 is connected to the resonance capacitor 112. The contact feeding device 110 is different from the non-contact feeding device 50.

More specifically, a resonance capacitor 112 is connected between the inner diameter side end portion 16a and the outer diameter side end portion 16b of each round spiral coil 16, and a parallel resonance circuit is formed by each round spiral coil 16 portion. There is.

Here, since it is known that the parallel resonant circuit should supply a current of 1 / Q to the Q constant of the circuit, the current of the reciprocating line can be reduced to 1 / Q. Therefore, the reciprocating line can be formed thin and the current loss is reduced.

For example, in the case of "Q = 10", a current of "1/10" may be passed, so that the reciprocating line can be formed thin and the current loss can be reduced.

In the coil unit 10, a resonance capacitor 112 may be connected between the inner diameter side end portion 16a and the outer diameter side end portion 16b of the round spiral coil 16, and in the coil unit 30, a square spiral coil may be connected. A resonance capacitor 112 may be connected between the inner diameter side end portion 16a and the outer diameter side end portion 16b of 32.

(XV) A twelfth embodiment of the present invention

Next, as an example of the embodiment of the present invention, the non-contact power feeding device according to the twelfth embodiment will be described with reference to FIGS. 15 (a) and 15 (b).

Here, FIGS. 15 (a) and 15 (b) show explanatory views schematically showing the circuit configuration of the non-contact power feeding device according to the twelfth embodiment as an example of the embodiment of the present invention. .. Note that FIG. 15 (b) is a view taken along the arrow D of FIG. 15 (a).

In the non-contact power feeding device 120 according to the twelfth embodiment and the non-contact power feeding device 90 according to the ninth embodiment, the non-contact power feeding device 120 has an inner diameter side end portion 16a and an outer diameter side end portion of the square spiral coil 32. It differs from the non-contact power feeding device 90 only in that a resonance capacitor 112 is connected to the portion 16b and a parallel resonance circuit is formed by each of the square spiral coil 32 portions.

As described above, it is known that the parallel resonant circuit should supply 1 / Q current to the Q constant of the circuit, so that the current of the reciprocating line can be reduced to 1 / Q. become.

For example, in the case of "Q = 10", a current of "1/10" may be passed.

(XVI) Configuration example of the first switch and the second switch

In FIG. 16, the coil units 10, 30, 40 according to the first to third embodiments and the non-contact power feeding devices 50, 60, 70, 80, 90, 100, 110 according to the fourth to twelfth embodiments are shown. , 120 shows an explanatory diagram schematically showing the circuit configuration of the semiconductor switch that can be used as the first switch 20 and the second switch 22.

As the first switch 20 and the second switch 22, various conventionally known switches can be used. For example, SSR (Solid), which is a non-contact relay semiconductor switch whose circuit configuration is shown in FIG. A State Relay (solid state relay) 130 can be used.

By using a semiconductor switch such as the SSR 130 as the first switch 20 and the second switch 22, the first switch 20 and the second switch 22 can be miniaturized, and high-speed and stable switching can be achieved. Operation can be obtained and reliability can be improved.

(XVII) Modification example regarding each of the above-described embodiments.

17 (a) and 17 (b) show the coil units 10, 30, 40 according to the first to third embodiments described above, and the non-contact power feeding devices 50, 60, 70 according to the fourth to twelfth embodiments. , 80, 90, 100, 110, 120 are shown are explanatory diagrams schematically showing modification examples. Note that FIG. 17 (b) is a view taken along the line E of FIG. 17 (a).

In the coil units 10, 30, 40 according to the first to third embodiments and the non-contact power feeding devices 50, 60, 70, 80, 90, 100, 110, 120 according to the fourth to twelfth embodiments, The ferrite plate 140 may be arranged adjacent to the round swirl coil 16, the square swirl coil 32, the round double swirl coil 42, and the square double swirl coil 82.

Specifically, for example, as shown in FIG. 17, a ferrite plate 140 is arranged on the back side of the quadrangular spiral coil 32.

(XVIII) Thirteenth Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the non-contact power feeding device according to the thirteenth embodiment will be described with reference to FIGS. 18 to 20.

Here, FIG. 18 shows an explanatory diagram schematically showing the circuit configuration of the non-contact power feeding device according to the thirteenth embodiment as an example of the embodiment of the present invention. Note that FIG. 18 shows the surface of the printed circuit board according to the thirteenth embodiment.

Further, FIG. 19 shows an explanatory diagram schematically showing the circuit configuration of the non-contact power feeding device according to the thirteenth embodiment as an example of the embodiment of the present invention. Note that FIG. 19 shows the back surface of the printed circuit board according to the thirteenth embodiment.

Further, FIG. 20 shows an explanatory diagram schematically showing the circuit configuration of the non-contact power feeding device according to the thirteenth embodiment as an example of the embodiment of the present invention. Note that FIG. 20 shows a cross-sectional view taken along the line FF in FIG.

In the non-contact power feeding device 150 according to the thirteenth embodiment, the conductor pattern of the circuit configuration shown in the non-contact power feeding device 70 is formed on the double-sided printed circuit board 152 and the three-layer power feeding line board 154, and the double-sided printed circuit board 152 and the three layers are formed. A printed circuit board is formed by superimposing the power supply line board 154 on the board.

As shown in FIGS. 18 to 20, the conductor pattern 156 of the square spiral coil 32 in the circuit configuration shown in the non-contact power feeding device 70 is formed on the surface of the double-sided printed circuit board 152, and the three-layer power feeding line board 154 has a conductor pattern 156. Is formed with a conductor pattern 158 excluding the square spiral coil 32 in the circuit configuration shown in the non-contact power feeding device 70.

The double-sided printed circuit board 152 and the three-layer power supply line board 154 are electrically connected by wiring 160.

Here, reference numeral 162 indicates a ferrite material, and reference numeral 164 indicates an earth line.

That is, a ferrite material 162 is disposed between the double-sided printed circuit board 152 and the three-layer power supply line board 154, and the ferrite material 162 improves the power supply efficiency and is unnecessary for the three-layer power supply line board 154 side. The induced magnetic field can be cut off, and the loop current of the ground line 164 can be prevented.

(XIX) 14th Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the non-contact power feeding device according to the fourteenth embodiment will be described with reference to FIG. 21.

Here, FIG. 21 shows an explanatory diagram schematically showing the circuit configuration of the non-contact power feeding device according to the fourteenth embodiment as an example of the embodiment of the present invention.

The non-contact power supply device according to the 14th embodiment includes a plurality of non-contact power supply devices (contactless power supply device 90, non-contact power supply device 100, non-contact power supply device 120, non-contact power supply device 150) on a printed circuit board. It is configured by connecting individual pieces.

Specifically, for example, as shown in FIG. 21, the non-contact power feeding device 170 according to the fourteenth embodiment has a plurality of non-contact power feeding devices 90 (in the example shown in FIG. 21, “4 vertical × ×”. Horizontal 4 = 16 ".) Connected.

According to such a non-contact power feeding device 170, it becomes possible to supply power to a power receiving load provided with a power receiving coil over an extremely wide area.

When forming the non-contact power supply device 170, the four sides of the non-contact power supply device (contactless power supply device 90, non-contact power supply device 100, non-contact power supply device 120, non-contact power supply device 150) made into a printed circuit board. Terminals or connectors are arranged in the above, and a non-contact power supply device (contactless power supply device 90, non-contact power supply device 100, non-contact power supply device 120, non-contact power supply device 150) printed on a printed circuit board by these terminals or connectors is arranged vertically and horizontally. It is preferable to be able to connect freely.

(XX) Fifteenth Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the non-contact power supply / reception system according to the fifteenth embodiment will be described with reference to FIG. 22.

Here, FIG. 22 shows an explanatory diagram schematically showing the configuration of the non-contact power supply / reception system according to the fifteenth embodiment as an example of the embodiment of the present invention.

The non-contact power supply / reception system 180 is a parking lot power supply system installed on the ground of a parking area in a parking lot and for non-contact power supply to an automobile 182 parked in the parking lot.

It is assumed that the automobile 182 is provided with a power receiving coil 52 and a charging device (not shown).

The non-contact power feeding system 180 includes a non-contact power feeding device 50 installed on the ground of a parking area in a parking lot, and when a car 182 is parked on any of the round spiral coils 16, the car 182 Energizes the round spiral coil 16 in the parked place and supplies power to the power receiving coil 52 of the automobile 182 to store electricity in the charging device.

The detection of whether or not the automobile 182 is parked on the round spiral coil 16 is the same as the processing operation described in the above-mentioned "Explanation of the power receiving load detection operation in the (VI) non-contact power feeding devices 50 and 60". It suffices to perform various processing operations.

Then, the first switch 20 and the second switch 22 are controlled on / off so that only the round spiral coil 16 in which it is detected that the automobile 182 is parked is energized. Power is supplied to the power receiving coil 52 of the automobile 182.

Further, as shown in FIG. 22, when the automobile 182 is parked on each of the plurality of round spiral coils 16 (in the example shown in FIG. 22, the automobile 182 is mounted on the three round spiral coils 16). Are parked respectively.), The same processing operation as that described in the above-mentioned "Explanation of time-divided power feeding operation in (VII) non-contact power feeding devices 50 and 60" is performed, and each round spiral. The coil 16 is energized in a time-divided manner.

In the round spiral coil 16, a resonance capacitor 112 is provided between the inner diameter side end portion 16a and the outer diameter side end portion 16b as described in the above-mentioned “(XIV) 11th embodiment of the present invention”. They may be connected to form a parallel resonant circuit with 16 portions of each round spiral coil.

When a parallel resonant circuit is formed with 16 parts of each round spiral coil in this way, it is only necessary to pass a current Q times smaller than that of the circuit to the reciprocating line, so the reciprocating line can be wired with a thin electric wire or a coaxial cable. As a result, the installation cost when installing the non-contact power supply / reception system 180 in the parking lot can be reduced, and the installation work becomes easy.

(XXI) 16th Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the non-contact power supply / reception system according to the sixteenth embodiment will be described with reference to FIG. 23.

Here, FIG. 23 shows an explanatory diagram schematically showing the configuration of the non-contact power supply / reception system according to the sixteenth embodiment as an example of the embodiment of the present invention.

The non-contact power feeding system 190 includes a non-contact power feeding device 50 laid on the floor 192 of the room, as in the above-mentioned "(XX) 15th embodiment of the present invention". When a home electric appliance (indoor home appliance) 194 is placed on the round spiral coil 16 (not shown in FIG. 23), the round swirl coil 16 (at the place where the home appliance 194 is placed) is placed. It is a home electric appliance power supply system for supplying power to the home electric appliance 194 in a non-contact manner by energizing (not shown in FIG. 23).

The home appliances 194 include, for example, an automatic vacuum cleaner 194-1, a television 194-2, a heating appliance 194-3, a lighting fixture 194-4, a fan 194-5, and the like, all of which are circles. It is provided with a power receiving coil 52 that is supplied with power by energization of the spiral spiral coil 16.

Such a non-contact power supply / receiving system 190 is highly convenient when power is supplied to home appliances 194 that are moved and used, such as an automatic vacuum cleaner 194-1 and a heater 194-3.

(XXII) Seventeenth Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the non-contact power supply / reception system according to the 17th embodiment will be described with reference to FIG. 24.

Here, FIG. 24 shows an explanatory diagram schematically showing the configuration of the non-contact power supply / reception system according to the seventeenth embodiment as an example of the embodiment of the present invention.

The non-contact power receiving and feeding system 200 includes a non-contact power feeding device 90 installed on the upper surface 202a of the desk 202, and a small device (desktop small device) 204 as an electric device is arranged on any of the square spiral coils 32. Then, it is a non-contact power receiving and feeding system that energizes the square spiral coil 32 at the place where the small device 204 is arranged and supplies power to the small device 204 in a non-contact manner.

As the accessory 204, there are various types such as a lighting fixture 204-1, a personal cone puter 204-2, an electric pencil sharpener 204-3, a mobile phone 204-4, or a fan 204-5. Both have a power receiving coil 52 that is fed by energization of the square spiral coil 32.

Such a non-contact power supply / receiving system 200 is highly convenient for supplying power to small devices 204 that are moved and used, such as a personal cone pewter 204-2, an electric pencil sharpener 204-3, and a mobile phone 204-4. ..

(XXIII) Eighteenth Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the induction heating device according to the eighteenth embodiment will be described with reference to FIG. 25.

Here, FIG. 25 shows an explanatory diagram schematically showing the configuration of the induction heating device according to the eighteenth embodiment as an example of the embodiment of the present invention.

The induction heating device 210 includes a non-contact power feeding device 50, and uses a round spiral coil 16 as an induction heating coil.

That is, by arranging the heated object 212 of the metal work on any of the round spiral coils 16 and energizing the round spiral coil 16 at the place where the heated object 212 is arranged, the round spiral coil 16 is energized. 16 functions as an induction heating coil, and the heated object 212 can be induced and heated.

(XXIV) 19th Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the electromagnetic cooker according to the 19th embodiment will be described with reference to FIG. 26.

Here, FIG. 26 shows an explanatory diagram schematically showing the configuration of the electromagnetic cooker according to the nineteenth embodiment as an example of the embodiment of the present invention.

The electromagnetic cooker 220 is provided with a non-contact power feeding device 50, and uses a round spiral coil 16 as an electromagnetic cooker induction heating coil.

That is, a cooking utensil such as a metal cooking pot 222 is arranged on any of the round swirl coils 16 to energize the round swirling coil 16 at the place where the cooking utensils such as the metal cooking pot 222 are arranged. As a result, the round spiral coil 16 functions as an induction heating coil for an electromagnetic cooker, and can induce and heat a cooking utensil such as a metal cooking pot 222.

As a result, the foodstuff placed in the cooking utensil such as the metal cooking pot 222 can be heated to a desired temperature to cook the foodstuff.

(XXV) 20th Embodiment of the present invention

Next, as an example of the embodiment of the present invention, the electromagnetic cooker according to the twentieth embodiment will be described with reference to FIG. 27.

Here, FIG. 27 shows an explanatory diagram schematically showing the configuration of the electromagnetic cooker according to the twentieth embodiment as an example of the embodiment of the present invention.

The electromagnetic cooker 230 includes a non-contact power feeding device 50, and uses a round spiral coil 16 as an induction heating coil for an electromagnetic cooker.

That is, a large-area iron plate 232 is placed on a plurality of round spiral coils 16 (for example, on all the round spiral coils 16 constituting the non-contact power feeding device 50 as shown in FIG. 27). As a cooking utensil for cooking, as described in the above-mentioned "Explanation of time-divided power feeding operation in (VII) non-contact power feeding devices 50 and 60", each and a plurality of the plurality of first switching devices 20 By switching between the connected state and the disconnected state of each of the second switchers 22 in a time-divided manner and energizing the plurality of round spiral coils 16 from the AC power supply 18 in a time-divided manner, a plurality of round spirals are wound. The coil 16 functions as an induction heating coil for an electromagnetic cooker that operates in a time-divided manner, and can perform induction heating while controlling the heating distribution of a cooking appliance such as an iron plate 232.

As a result, the heating distribution of the cooking utensil such as the iron plate 232 can be controlled according to the position of the food material placed on the cooking utensil such as the iron plate 232, so that the food material placed on the cooking utensil such as the iron plate 232 can be efficiently used. The food can be cooked by heating to.

(XXVI) Description of Other Embodiments and Modifications

It should be noted that each of the above-described embodiments is merely an example, and the present invention can be implemented in various other embodiments. That is, the present invention is not limited to the above-described embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the present invention.

For example, each of the above-described embodiments may be modified as shown in (XXVI-1) to (XXVI-12) below.

(XXVI-1) In each of the above-described embodiments, the case where a reciprocating parallel line is used as the reciprocating line has been described, but the reciprocating line that can be used in the present invention is not limited to the reciprocating parallel line. Of course. For example, as the reciprocating wire that can be used in the present invention, various reciprocating wires such as a coaxial cable, a reciprocating stranded wire, and a reciprocating litz wire can be appropriately used in addition to the reciprocating parallel wire.

(XXVI-2) In each of the above-described embodiments, as a configuration example of the first switch and the second switch, a semiconductor switch of a non-contact relay such as an SSR has been described, but the present invention is not limited thereto. Of course. As the first switch and the second switch, various switches such as a switch including a mechanically movable part such as a contact relay such as an electromagnetic relay (EMR: Electro Magnetic Relay) can be used. It may be used as appropriate.

(XXVI-3) In each of the above-described embodiments, a spiral coil is used as the coil, and as specific examples thereof, a round spiral coil, a square spiral coil, a round double spiral coil, and a square double spiral coil have been described. However, it goes without saying that the coil is not limited to these. That is, the shape of the coil used in the present invention is not particularly limited, and may not be a spiral type, may be a triangle or a polygon in addition to a round shape or a quadrangle, and may be appropriately selected according to design conditions and the like. do it.

(XXVI-4) In each of the above-described embodiments, a planar coil such as a round spiral coil or a square spiral coil has been mainly described as the spiral coil, but it goes without saying that the spiral coil is not limited to these. be. That is, the spiral coil used in the present invention is not limited to the flat coil, and a spiral coil having irregularities may be used depending on design conditions and the like.

(XXVI-5) In each of the above-described embodiments, the case where a plurality of spiral coils are evenly arranged over the entire region is shown, but the region is not limited to this, and the region is of course not limited to this. The plurality of spiral coils may be closely arranged in a specific section in the whole area, while the plurality of spiral coils may be sparsely arranged in a specific section in the whole area. That is, the arrangement ratio when arranging the plurality of spiral coils in a certain region may be appropriately changed according to the design conditions and the like.

(XXVI-6) In each of the above-described embodiments, a case where a plurality of spiral coils of the same size are arranged in a certain region is shown, but it is of course not limited to this, and is different. A plurality of spiral coils of a size may be appropriately arranged. That is, it is not necessary that the sizes of the plurality of spiral coils arranged in a certain region are all the same, and the spiral coils having an appropriate size may be selected and used according to the design conditions and the like.

(XXVI-7) In each of the above-described embodiments, the non-contact power feeding device including four first reciprocating parallel lines and six second reciprocating parallel lines has been described, but the first reciprocating parallel lines and Of course, the number of lines with the second round-trip parallel line is not limited to these. The number of the first reciprocating parallel line and the second reciprocating parallel line may be appropriately changed according to, for example, the number of spiral coils to be arranged in a matrix.

(XXVI-8) In each of the above-described embodiments, the case where one spiral coil or four spiral coils are energized has been illustrated and described, but it is of course not limited to these. That is, the number of spiral coils to be energized is not limited, and an appropriate number of spiral coils may be energized.

(XXVI-9) In each of the above-described embodiments, the case where the first reciprocating parallel line and the second reciprocating parallel line are arranged in parallel with the XY plane has been described, but the present invention is not limited to this. Therefore, if the first reciprocating parallel line and the second reciprocating parallel line are arranged so as to intersect each other, the first reciprocating parallel line and the second reciprocating parallel line may have any arrangement relationship.

(XXVI-10) In each of the above-described embodiments, the case where the first reciprocating parallel line and the second reciprocating parallel line are arranged so as to be orthogonal to each other has been described, but it is of course not limited to this. If the first reciprocating parallel line and the second reciprocating parallel line intersect, they may intersect at an angle larger than a right angle or an angle smaller than a right angle.

(XXVI-11) In each of the above-described embodiments, the reciprocating line is a linear conductor (X-direction first linear conductor, X-direction second linear conductor, Y-direction first linear conductor, Y-direction second straight line). Although the case of being composed of a shaped conductor) has been described, the present invention is not limited to this, and the reciprocating line may be appropriately configured by a curved conductor or a bent conductor.

(XXVI-12) Of course, the above-described embodiments and the above-described embodiments (XXVI-1) to (XXVI-11) may be combined as appropriate.

INDUSTRIAL APPLICABILITY The present invention can be used in various fields such as a field of non-contact power supply / reception, inductive heating, or electromagnetic cooking in which power is supplied from a power feeding coil to a power receiving coil in a non-contact manner by an electromagnetic induction resonance method.

10 Coil unit 12 1st reciprocating parallel line (1st reciprocating line)
12a X-direction first linear conductor (first direction first conductor)
12b X-direction second linear conductor (first-direction second conductor)
14 Second round-trip parallel line (second round-trip line)
14a Y-direction first linear conductor (second-direction first conductor)
14b Y-direction second linear conductor (second-direction second conductor)
16 Round spiral coil (coil, spiral coil, single spiral coil)
16a Inner diameter side end 16b Outer diameter side end 18 AC power supply (power supply)
20 1st switch (1st switch)
22 Second switch (second switch)
30 Coil unit 32 Square spiral coil (coil, spiral coil, single spiral coil)
40 Coil unit 42 Round double spiral coil (coil, spiral coil, double spiral coil)
44 1st round spiral coil (1st spiral coil)
44a Inner diameter side end 44b Outer diameter side end 46 Second round spiral coil (second spiral coil)
46a Inner diameter side end 46b Outer diameter side end 50 Non-contact power supply device 52 Power receiving coil 60 Non-contact power supply device 70 Non-contact power supply device 72 Mobile detector 80 Non-contact power supply device 82 Square double spiral coil (coil, spiral coil) , Double swirl coil)
90 Non-contact power supply device 92 Double-sided printed circuit board (printed circuit board)
94 Conductor pattern 96 Conductor pattern 100 Non-contact power supply device 102 Double-sided printed circuit board (printed circuit board)
110 Non-contact power supply device 112 Resonant capacitor 120 Non-contact power supply device 130 SSR (Solid State Relay) (Semiconductor switch)
140 Ferrite plate 150 Non-contact power supply device 152 Double-sided printed circuit board (printed circuit board)
154 Three-layer power supply line board (printed circuit board)
156 Conductor pattern 158 Conductor pattern 160 Wiring 162 Ferrite material 164 Earth line 170 Non-contact power supply device 180 Non-contact power supply system 182 Automobile 190 Non-contact power supply system 192 Floor 194 Home appliances (indoor home appliances) (electrical equipment)
194-1 Automatic vacuum cleaner (electrical equipment)
194-2 TV (electrical equipment)
194-3 Heating equipment (electrical equipment)
194-4 Lighting equipment (electrical equipment)
194-5 Fan (electrical equipment)
200 Non-contact power supply / reception system 202 Desk 202a Top surface 204 Small equipment (desktop small equipment) (electrical equipment)
204-1 Lighting equipment (electrical equipment)
204-2 Personal corn pewter (electrical equipment)
204-3 Electric pencil sharpener (electrical equipment)
204-4 Mobile phone (electrical equipment)
204-5 Fan (electrical equipment)
210 Induction heating device 212 Heated object 220 Induction cooker 222 Metal cooking pot (cooking utensil)
230 Induction cooker 232 Iron plate (cooking utensil)
A Crossing position B Intersection point C Resonant capacitor t Time

Claims (30)

In a coil unit that can be selectively energized
A first reciprocating line having a first conductor in the first direction and a second conductor in the first direction and extending in the first direction,
A second reciprocating line having a first conductor in the second direction and a second conductor in the second direction, extending in the second direction and intersecting the first reciprocating line,
At the intersection of the first reciprocating line and the second reciprocating line , one end is connected to the first conductor in the first direction, and the other end is connected to the first conductor in the second direction. With the coil connected to the conductor ,
With the power supply connected to the second round-trip line,
A first switch that selects the connection state or disconnection state between the second reciprocating line and the power supply, and
A coil unit comprising a second switch for selecting a connected state or a disconnected state between the first conductor in the first direction and the second conductor in the first direction . In the coil unit according to claim 1,
The first conductor in the first direction is the outbound line, the second conductor in the first direction is the return line, the first conductor in the second direction is the outbound line, and the second conductor in the second direction is the outbound line. When making a return route,
The power supply is connected to the end of the second conductor in the second direction and the second conductor in the second direction.
The first switch is connected between the first conductor in the second direction and the power supply .
The second switch is a coil unit characterized in that it is connected between the first conductor in the first direction and the second conductor in the first direction. In the coil unit according to claim 2,
The coil is a coil unit characterized by being a spiral coil. In the coil unit according to claim 3,
The spiral coil is a single spiral coil, and the inner diameter side end portion is connected to the second direction first conductor, and the outer diameter side end portion is connected to the first direction first conductor.
A coil unit characterized in that the first-direction second conductor and the second-direction second conductor are connected at an intersection at the intersection position. In the coil unit according to claim 4,
The single spiral coil is a coil unit characterized in that a resonance capacitor is connected between the inner diameter side end portion and the outer diameter side end portion. In the coil unit according to claim 3,
The spiral coil is a double spiral coil in which a first spiral coil and a second spiral coil are doubly overlapped.
The inner diameter side end of the first spiral coil is connected to the second direction first conductor, and the outer diameter side end of the first spiral coil is connected to the first direction first conductor.
The inner diameter side end of the second spiral coil is connected to the first direction second conductor, and the outer diameter side end of the second spiral coil is connected to the second direction second conductor. Coil unit to do. In the coil unit according to any one of claims 1, 2, 3, 4, 5 or 6.
The coil unit is characterized in that the first reciprocating line and the second reciprocating line are arranged orthogonally in the XY plane in the XYZ Cartesian coordinate system. In the coil unit according to any one of claims 1, 2, 3, 4, 5, 6 or 7.
The coil unit is characterized in that the first switch and the second switch are semiconductor switches, respectively. The coil unit according to any one of claims 1, 2, 3, 4, 5, 6, 7 or 8.
A coil unit characterized in that a ferrite plate is arranged adjacent to the coil. In a non-contact power supply device using the electromagnetic induction resonance method,
A first reciprocating line that extends in the first direction and is arranged side by side in the second direction , each of which has a first conductor in the first direction and a second conductor in the first direction. When,
A plurality of conductors are arranged side by side in the first direction while extending in the second direction, intersecting the first reciprocating line, respectively , and the plurality of arranged conductors are arranged in the second direction and the second direction, respectively. A second round-trip wire with a second conductor, respectively ,
At each of the intersections of the first reciprocating line and the second reciprocating line, one end is connected to the first conductor in the first direction, and the other end is connected to the first conductor in the second direction. With multiple coils connected to the conductor ,
A single power supply connected in parallel to the plurality of second round-trip lines,
A plurality of first switchers for selecting a connection state or a disconnection state between each of the plurality of second round-trip lines and the power supply, and
It is characterized by having a plurality of second switchers for selecting a connection state or a disconnection state between the first conductor in the first direction and the second conductor in the first direction in each of the plurality of first reciprocating lines. Non-contact power supply device. In the non-contact power feeding device according to claim 10,
Each of the first conductors in the first direction is used as an outward line, the second conductor in each of the first directions is used as a return line, and the first conductor in each of the second directions is used as the outbound line. When the second conductor in the second direction is the return line,
The power supply is connected to the ends of the respective second-direction first conductors and the respective second-direction second conductors.
The first switch is connected between the first conductor in the second direction and the power supply , respectively.
The second switch is a non-contact power feeding device characterized in that the first conductor in the first direction and the second conductor in the first direction are connected to each other. In the non-contact power feeding device according to claim 11,
The non-contact power feeding device, wherein the plurality of coils are a plurality of spiral coils. In the non-contact power feeding device according to claim 12,
Each of the plurality of spiral coils is a single spiral coil, and at each of the intersecting positions, the inner diameter side end portion is connected to the second direction first conductor, and the outer diameter side end portion is the first. Connect with the first conductor in the direction,
A non-contact power feeding device characterized in that the first-direction second conductor and the second-direction second conductor are connected at intersections at the respective intersection positions. In the non-contact power feeding device according to claim 13,
The plurality of single spiral coils are non-contact power feeding devices in which a resonance capacitor is connected between the respective inner diameter side ends and the respective outer diameter side ends. In the non-contact power feeding device according to claim 12,
The plurality of spiral coils are double spiral coils in which the first spiral coil and the second spiral coil are doubly overlapped, respectively.
At each of the intersection positions, the inner diameter side end of the first spiral coil is connected to the second direction first conductor, and the outer diameter side end of the first spiral coil is connected to the first direction first conductor. The inner diameter side end of the second spiral coil was connected to the first direction second conductor, and the outer diameter side end of the second spiral coil was connected to the second direction second conductor. A non-contact power feeding device characterized by that. In the non-contact power feeding device according to any one of claims 10, 11, 12, 13, 14 or 15.
The non-contact power feeding device, wherein the plurality of first reciprocating lines and the plurality of second reciprocating lines are arranged orthogonally to each other in the XY plane in the XYZ Cartesian coordinate system. In the non-contact power feeding device according to any one of claims 10, 11, 12, 13, 14, 15 or 16.
The plurality of first switchers and the plurality of second switchers are non-contact power feeding devices, each of which is a semiconductor switch. In the non-contact power feeding device according to any one of claims 10, 11, 12, 13, 14, 15, 16 or 17.
A non-contact power feeding device characterized in that a ferrite plate is arranged adjacent to the coil. The non-contact power feeding device according to any one of claims 10, 11, 12, 13, 14, 15, 16, 17 or 18.
The presence / absence of a power receiving load in each of the plurality of coils is detected by sequentially switching between the connection state and the disconnection state of each of the plurality of first switches and each of the plurality of second switches. A non-contact power supply device characterized by. The non-contact power feeding device according to any one of claims 10, 11, 12, 13, 14, 15, 16, 17, 18 or 19.
Switching between the connection state and the disconnection state of each of the plurality of first switching devices and each of the plurality of second switching devices in a time-division manner, and energizing the plurality of coils in a time-division manner from the power supply. A non-contact power supply device characterized by. The non-contact power feeding device according to any one of claims 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20.
According to the movement of the passive load, the connection state and the disconnection state of each of the plurality of first switching devices and each of the plurality of second switching devices are switched, and the current is energized following the movement of the passive load. A non-contact power feeding device characterized in that the coil is changed. In the non-contact power feeding device according to any one of claims 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 or 21, further.
A non-contact power feeding device, which is arranged adjacent to each of the coils and has a plurality of mobile detectors for detecting the presence or absence of a power receiving load. It is a non-contact power supply device that forms a conductor pattern of a circuit configuration on a printed circuit board.
The circuit configuration is the circuit configuration of the non-contact power feeding device according to any one of claims 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 or 22. A non-contact power supply device characterized by. In the non-contact power feeding device according to claim 23,
The printed circuit board is formed by superimposing a double-sided printed circuit board and a three-layer power supply line board.
The circuit configuration of the non-contact power feeding device according to any one of claims 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 or 22 on the surface of the double-sided printed circuit board. The conductor pattern of the coil is formed in
The circuit of the non-contact power feeding device according to any one of claims 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 or 22 is provided on the three-layer power feeding line substrate. A conductor pattern excluding the coil in the configuration is formed,
A non-contact power feeding device characterized in that the double-sided printed circuit board and the three-layer power feeding line board are electrically connected by wiring. In the non-contact power feeding device according to any one of claims 23 or 24,
A non-contact power feeding device characterized in that a plurality of the printed circuit boards are connected. In a non-contact power supply / reception system in which power is supplied from the power supply coil to the power reception coil in a non-contact manner by the electromagnetic induction resonance method.
Power the coil in the non-contact power feeding device according to any one of claims 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 or 25. As a coil
A non-contact power supply / reception system characterized by energizing the coil and supplying power to the power receiving coil of the power receiving load. In the non-contact power supply / reception system according to claim 26,
The power receiving load is a non-contact power supply / receiving system characterized in that it is an automobile or an electric device. In an induction heating device that heats the heated part by induction heating
Induce the coil in the non-contact power feeding device according to any one of claims 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 or 25. As a heating coil
An induction heating device characterized in that the coil is energized to heat an object to be heated. In an electromagnetic cooker that heats and cooks cooking utensils by induction heating
The coil in the non-contact power feeding device according to any one of claims 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 or 25 is electromagnetically driven. As a cooker induction heating coil,
An electromagnetic cooker characterized in that the coil is energized to heat a cooking utensil. In the electromagnetic cooker according to claim 29,
An electromagnetic cooker characterized in that the heating distribution of the cooking utensil is controlled by controlling the energization of the coil in a time-division manner.

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