JP3491178B2 - Contactless power supply system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pickup unit which is inductively coupled to a load such as a plurality of transport vehicles from a feeder line connected to a power source in a physically non-contact state with the feeder line. for non-contact power supply system which attained the cost of power supply equipment for non-contact power supply system for supplying power, the relative particular feed line supplying a constant current through.

[0002]

2. Description of the Related Art FIG. 10 is a front view showing the relationship between a guide rail and a carrier in a conventional monorail type carrier facility,
FIG. 11 is an enlarged cross-sectional view showing the relationship between the power supply line provided on the guide rail and the pickup section provided on the transport vehicle. In the figure, 1 denotes the guide rail and 2 denotes the transport vehicle.

The guide rail 1 is formed in an I-shaped cross section, and is supported by a support arm 11 mounted along its one side in the longitudinal direction at substantially constant intervals in a state of being suspended from the ceiling of a factory or the like. A guide line 12 is fixed to the other side surface of the guide rail 1 and extends in the longitudinal direction along the guide rail 1.

On the other hand, the carrier 2 is arranged in front of and behind the traveling direction of the carrier 2 at a predetermined interval, and the guide rail 1 is seen in a front view.
The carrier 23 is provided over a pair of U-shaped body frames 21 (only one side of which is shown in the drawing) that holds the U-shape, and a carrier 23 (not shown) is detachably supported by the carrier 23.

On one of the body frames 21, a drive trolley 21a rollingly contacted with the upper end surface of the guide rail 1 is provided at a position facing the upper end surface of the guide rail 1, and a drive trolley 21a facing the lower end surface of the guide rail 1 is provided on the side surface. A pair of steady rest rollers 21 rolling and contacting
b and 21b, respectively, and a pickup unit 24 at a position facing the guide line 12,
1a on the upper end surface of the guide rail 1 and the steady rest roller 2
The guide rails 1b and 21b are mounted on the guide rail 1 in a state in which they are in rolling contact with both side surfaces of the lower end portion of the guide rail 1 and the pickup portion 24 faces the guide line 12.

Above the body frame 21, the drive trolley 21 is provided.
A motor M that is connected to a is mounted, drives the control unit and the motor M (not shown) by the electric power supplied through the pickup unit 24, rotates the drive trolley 21a, and moves the carrier 2 along the guide rail 1. It is designed to drive. As shown in FIG. 11, the guide line 12 includes two supporters 12 protruding laterally at a predetermined distance above and below a mounting plate 12a fixed to the other side surface of the guide rail 1.
One line is stretched in a loop at each tip of b and 12c. A line on one side of the induction line 12 stretched in a loop is referred to as a power supply line 12d, and a line on the other side is referred to as a power supply line 12e.

On the other hand, in the pickup section 24, a pickup coil 24g is attached to the central projection 24d of the plate-shaped projections 24b, 24c, and 24d provided at the top, bottom, and the center of the pickup core 24a having an E-shaped cross section. It is wrapped. In such a conventional system, the motor M
In contrast, a constant voltage is constantly applied to maintain the stable running state of each carrier regardless of the load.
A constant current source as shown in FIG. 12 is connected to the power supply lines 12d and 12e.

FIG. 12 is a circuit diagram showing a general configuration of a constant current circuit for supplying a constant current to a power supply line, which is configured as a thyristor bridge in which six thyristors are combined to rectify a commercial three-phase alternating current. Rectifier 4 for obtaining DC voltage
1. a capacitor 42 for smoothing the output of the rectifying unit 41,
An inverter converter 43 configured to combine four power transistors in a bridge to switch a DC voltage to generate a voltage of a predetermined frequency, an impedance matching transformer 44 for impedance matching and isolation (floating), and the rectifier. 41
And a high-frequency gate unit 46 for controlling the inverter conversion unit 43.

Impedance matching transformer section 44
The both ends on the secondary side of are connected to the above-mentioned power supply lines 12d and 12e through the resonance capacitor CR. The rectifying section gate unit 45 is connected to each of the three-phase AC power supply lines R, S, and T, and the current detector CT ₃ provided on the power supply line 12e.
, And outputs a control signal to the gate terminals G _{1 to} G ₆ of each thyristor to adjust the DC voltage based on the current detected by the current detector CT ₃ and fixes the thyristor by feedback control. The frequency sine wave constant current is supplied to the power supply lines 12d and 12e.

The gate unit 46 has a transformer T1 on the secondary side of the impedance matching transformer section 44.
Is connected to the gates of the power transistors constituting each inverter conversion unit 43, detects the voltage phase of the power supply lines 12d and 12e, and controls the switching frequency of the inverter conversion unit 43. ing.

[0011]

The constant current source as shown in FIG. 12 has a complicated structure, a large number of parts, and a high equipment cost.

The present invention has been made in view of the above circumstances, and a first object thereof is to combine a constant voltage power source and an impedance conversion unit to reduce the number of parts and to configure an inexpensive constant current source. A contactless power supply system is provided. A second object is to provide a low-cost non-contact power supply system with a simplified structure by using various impedance converters composed of a T-type or π-type 4-terminal circuit. is there.

[0013]

A contactless power supply system according to a first aspect of the present invention supplies a power supply line connected to a power source to a load via a pickup section inductively coupled to the power supply line. the non-contact power supply system for supplying power, wherein the power source comprises a constant voltage power source, and an impedance converter for converting the constant voltage from the constant voltage power source to the constant current, the Inpi
The impedance converter is an inductor set to resonance and
It consists of a T-type 4-terminal circuit including a capacitor.
The series element of the T-type 4-terminal circuit is two inductors,
In addition, the parallel elements are composed of capacitors,
The input and output terminals of are common terminals, and other
Connect the two inductors directly between the input and output terminals.
Connected to the column, the connection point between both inductors and the common terminal
The capacitor is connected between the two.

A contactless power supply system according to a second aspect of the present invention, an inductive connection from a power supply line connected to a power source to the power supply line.
Supplying power to the load via the combined pickup unit
In the contactless power supply system, the power source is a constant voltage power source.
And a constant voltage source for converting a constant voltage from the constant voltage power source into a constant current.
Impedance conversion unit , the impedance conversion unit including an inductor and a capacitor set to a resonance state.
Yes constituted by 4-terminal circuit-free T-type two capacitors in series element 4 terminal circuit of the T-type, also parallel elements
Inductor respectively formed of, corresponding one input terminal to the output terminal and the common terminal, and connect the two capacitors in series between the corresponding other input terminal and the output terminal, both calibration
An inductor is connected between a connection point between the capacitors and the common terminal.

A contactless power supply system according to a third aspect of the present invention includes a power supply line connected to a power source and an inductive connection with the power supply line.
Supplying power to the load via the combined pickup unit
In the contactless power supply system, the power source is a constant voltage power source.
And a constant voltage source for converting a constant voltage from the constant voltage power source into a constant current.
Impedance conversion unit , the impedance conversion unit including an inductor and a capacitor set to a resonance state.
Yes constituted by 4-terminal circuit free π type, a series element inductor 4-terminal circuit of the π type, also parallel elements are two
Each of them is composed of a capacitor , and one corresponding input terminal and output terminal are used as a common terminal, and the inductor is connected between the corresponding other input terminal and output terminal, and each connection on both sides thereof is connected.
Each of the capacitors is connected between the connecting end and the common terminal.

A contactless power supply system according to a fourth aspect of the present invention, an inductive connection from a power supply line connected to a power source to the power supply line.
Supplying power to the load via the combined pickup unit
In the contactless power supply system, the power source is a constant voltage power source.
And a constant voltage source for converting a constant voltage from the constant voltage power source into a constant current.
Impedance conversion unit , the impedance conversion unit including an inductor and a capacitor set to a resonance state.
Yes constituted by 4-terminal circuit free π type, a series element capacitor four-terminal circuit of the π type, also parallel elements are two
Each of the inductors is configured to have a corresponding one input terminal and an output terminal as a common terminal, and the capacitor is connected between the corresponding other input terminal and an output terminal, and the connection ends on both sides of the capacitor are common to each other. Each of the inductors is connected to a terminal.

A non-contact power supply system according to a fifth aspect of the present invention comprises a power supply line connected to a power source and an inductive connection with the power supply line.
Supplying power to the load via the combined pickup unit
In the contactless power supply system, the power source is a constant voltage power source.
And a constant voltage source for converting a constant voltage from the constant voltage power source into a constant current.
Impedance conversion section, and the impedance conversion section
Is the input voltage is proportional to the output current, and the input current is the output
Inductors and capacitors that satisfy the condition that voltage is proportional to
It is characterized in that it is configured by a four-terminal circuit including a switch .

The contactless power supply system <br/> beam according to a sixth aspect of the present invention, there inductor plurality constituting the impedance conversion portion, at least one of which is so constructed that the feed line also serves as this It is characterized by

[0019]

The operation of the present invention will be described with reference to FIG.
FIG. 6A shows a constant voltage power supply and impedance according to the present invention.
It is an explanatory view showing a constant current source consisting of
31 is a constant voltage power supply, 32 is an impedance converter
ing. The impedance converter 32 is a T-type four-terminal circuit.
As an inductor (L _S , L
_T : inductance) 32a, 32b and parallel elements
Consists of a capacitor (C _S : capacitance) 32c
Has been done.

[0020]

Now, the constant voltage from the constant voltage power source 31 is V₀,
The voltage applied to the power supply lines 12d and 12e is V₁, Inductor
The current supplied to 32a and 32b is I₀, I₁Then, this
The relationship of Expression (1) described later is established between them. Obey
I₁, I₀Are respectively expressed by equations (2) and (3) as described below.
Let From now on i ₁To keep V constant₀Is constant
The constant voltage power supply 31 and the impedance converter 32
A constant current is supplied to the power supply lines 12d and 12e by the combination of
Can be paid.

In the first to fourth aspects of the present invention, the impedance conversion unit is composed of a T-type or π-type four-terminal circuit, and a capacitor or inductor is used as a series element and an inductor or capacitor is used as a parallel element. so,
Various circuits can convert a constant voltage to a constant current and supply it to the power supply line. In the fifth invention, the ratio of the input voltage and the output current
Since the condition is proportional to the example and the input current and the output voltage,
It is possible to return constant voltage to constant current and supply it to the power supply line with various types of circuits.
Is. According to the sixth aspect of the invention, the structure of the impedance conversion unit can be simplified by using the power supply line as the inductor.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings showing the embodiments. FIG. 1 is a schematic view showing a monorail type transportation facility to which the present invention is applied, FIG. 2 is a side view showing a relationship between a guide rail and a guided vehicle, FIG. 3 is a front view of the same, and FIG. 4 is a feeder line and a pickup section. 3 is an enlarged cross-sectional view showing the inductive coupling structure of FIG. In the figure, 1 is a guide rail that constitutes a monorail type transportation system in a factory, 2 is a guided vehicle, and 3 is a system controller. The guide rail 1 is installed so as to form a multiple loop by connecting stations (not shown) corresponding to the purpose of transportation, and a switch rail for selectively using either one at each intersection. A system branch / merge unit 4 is provided.

As shown in FIGS. 2 and 3, the guide rail 1 has a substantially I-shaped cross section, and one side surface thereof is provided with support arms 11 at substantially regular intervals in the longitudinal direction.
It is installed in a state where it is hung from the ceiling of the factory through 1. A guide line 12 is fixed to the other side surface of the guide rail 1 over the same entire length in the longitudinal direction, and is connected to the power supply unit 7 shown in FIG.

As shown in FIG. 4, the guide line 12 has a pair of supporters 12b protruding laterally at a predetermined interval in the upward and downward directions from one side surface of a mounting plate 12a screwed to the other side surface of the guide rail 1. , 12c, each of which has a line extending in a loop shape at its tip. One side of the line stretched in a loop is referred to as a power supply line 12d, and the other side is referred to as a power supply line 12e.
The power supply lines 12d and 12e are configured by coating a stranded wire formed by bundling insulated thin wires with a resin material. On the other hand, the carrier 2 is passed over a pair of front and rear body frames 21 and 22 which are U-shaped in a front view as shown in FIGS.
The object to be conveyed is detachably attached to the carrier 23.

The vehicle body frame 21 is an upper portion thereof, and a drive trolley 21a rollingly contacted with the upper surface of the guide rail 1 at a position facing the upper surface of the guide rail 1, and a position facing both upper and lower side surfaces of the guide rail 1, respectively. Each of the pair of steady rest rollers 21b and 21c rollingly contacting this is provided, and a motor M linked to the drive trolley 21a is fixed to the upper portion. Further, the pickup portion 2 is provided on each side of the body frame 21 that faces the power supply lines 12d and 12e of the guide rail 1.
4 are provided.

The pickup section 24 is a pickup core 24 made of a magnetic material and having an E-shaped cross section as shown in FIG.
Upper and lower protrusions 24b, 24c, and the central protrusion 2 in a.
A pickup coil 24g is wound around the back portions 24f and 24h connecting the 4d, in other words, the inner back walls of the recesses facing the power supply lines 12d and 12e. The number of turns, wire diameter, etc. of the pickup coil 24g are set as necessary. The pickup coil 24g is provided with the feeder lines 12d, 1 when the carrier 2 is mounted on the guide rail 1.
The power supply line 12 is opposed to the peripheral surface of 2e at a predetermined interval.
By energizing d and 12e, the electric power is induced in the pickup coil 24g by being positioned in the magnetic field formed around the electric power, so that the electric power is supplied to the motor M.

On the other hand, as shown in FIG. 2, the body frame 22 is provided with a driven trolley 22a which is in contact with the upper portion of the vehicle body frame 22 and faces the upper surface of the guide rail 1, and also on the guide rail 1.
Anti-sway rollers 22b and 22c are provided at the positions facing the lower side surfaces to be in rolling contact therewith.

The system controller 3 is for carrying out the control necessary for the transport vehicle to transport an object to be transported from one station to another intended station.
In addition to instructing operations such as loading and unloading of the transport vehicle, it outputs a control signal for securing a travel route to the branch / merge controller 5 shown in FIG. 1, and is not shown installed in each station. The station controller is also provided with a function to issue a work instruction for transferring the transported object G, to control the operation of the entire system to ensure safety, and to issue an alarm when a failure occurs.

The branching / merging controller 5 is for controlling traffic between the plurality of transport vehicles 2, and is installed at a location requiring traffic control, for example, a branching section, a merging section or the like. The other 6 is a repair line, and this repair line 6 branches the vehicle 2 requiring maintenance and inspection, and joins and joins the transport vehicle 2.
It is for guiding from the guide rail 1 to this place via the to perform maintenance.

FIG. 5 is a block diagram showing a schematic structure of a power supply / power receiving structure between the guide rail 1 and the carrier vehicle 2 in the monorail type carrier system shown in FIG. The power supply unit 7 is installed on the ground together with the system controller 3 and the like, and supplies a constant current to the power supply lines 12d and 12e forming the guide line 12. The pickup unit 24 is a feeder line 1 by inductive coupling.
Power is received from 2d and 12e, and power is supplied to the motor of each carrier vehicle 2 via the power receiving circuit 8.

FIG. 6A shows a concrete structure of the power supply section 7.
It is a circuit diagram and is a commonly used constant voltage power supply 31.
And the impedance conversion unit 32 in combination with the induction line 1
It is designed to supply a constant current to the load after 2
It The T-type 4-terminal circuit is used for the impedance converter 32.
And the series elements 32a and 32b have two inductors.
And the parallel element 32c is a capacitor.
The corresponding one input terminal A'and output terminal B'are common.
Between the other corresponding input terminal A and output terminal B as a terminal
Connect the two inductors in series to
Connect the capacitor between the connection point and the common terminal.
Continue, L_S, L _T, C_SIs set to be in resonance
ing.

FIGS. 6B to 6D are circuit diagrams of respective four-terminal circuits showing other examples of the impedance converter 32. The impedance converter 32 shown in FIG.
Type four-terminal circuit is used, and its series elements 33a, 33
b is two capacitors, and the parallel element 33c is an inductor. The corresponding one input terminal A ′ and output terminal B ′ are common terminals, and the other corresponding input terminal A and output terminal B are Connect two capacitors in series between
An inductor is connected between a connection point between both capacitors and the common terminal, and capacitance and inductance are set to be in a resonance state.

Impedance converter 3 shown in FIG. 6 (c)
2 uses a π-type four-terminal circuit, and its series element 34a
Is an inductor, and the parallel elements 34b and 34c are respectively composed of two capacitors. One corresponding input terminal A '
And the output terminal B ′ as a common terminal, the inductor is connected between the corresponding other input terminal A and the output terminal B, and the capacitors are provided between the connection terminals on both sides of the inductor and the common terminal. Are connected, and the inductance and capacitance are set to be in a resonance state.

Impedance converter 3 shown in FIG. 6 (d)
2 uses a π-type four-terminal circuit, and its series element 35a
Is a capacitor, and the parallel elements 35b and 35c are respectively composed of two inductors, and one corresponding input terminal A '
And the output terminal B ′ are common terminals, the capacitor is connected between the corresponding other input terminal A and the output terminal B, and the inductors are connected between the connection terminals on both sides of the capacitor and the common terminal. Are connected, and the capacitance and inductance are set to be in a resonance state.

FIG. 7 is an electric circuit diagram showing the structure of the power receiving portion mounted on the transport vehicle 2. With respect to the power supply lines 12d and 12e, the pickup portions 2 of the plurality of transport vehicles 2 are provided.
4 is inductively coupled. The configurations of the transport vehicles 2 are substantially the same, and one of them will be described.

The power receiving portion is composed of a pickup coil 24g and a capacitor 51a, receives electric power induced in the pickup coil 24g from a magnetic field formed around the feeder lines 12d and 12e by energization, and functions as a constant current circuit portion. A pickup resonance circuit unit 51, capacitors 52a and 52b, and an inductor 52c, and an impedance conversion unit 52 that converts a constant current output from the constant current circuit unit into a constant voltage, a full-wave rectification unit that converts a constant voltage source into a direct current. 53 and a smoothing circuit section 54 for smoothing the voltage. The smoothing circuit section 54 includes a choke coil 54a, a capacitor 54b, and a bleeder resistor 54c. As the impedance converter 52, FIG.
Any of those shown in (d) may be used. The configurations of the other power receiving units are substantially the same, and corresponding parts are designated by the same reference numerals and the description thereof will be omitted.

Next, the operation of the contactless power supply system according to the present invention will be described. The constant voltage output from the constant voltage power supply 31 is converted into a constant current by the impedance conversion unit 32, and power is supplied to the power supply lines 12d and 12e. On the other hand, the pickup section 24 gives the electric power induced in the pickup coil 24g in the magnetic field to the impedance conversion section 52 as a constant current in the pickup resonance circuit section 51. The impedance conversion unit 52 converts a constant current into a constant voltage, a full-wave rectifier circuit 53 converts the constant voltage into a direct current, a smoothing circuit unit 54 smoothes the voltage, and supplies it to the motor M. As a result, even if the load of the motor M changes, a constant voltage is always applied to the other driving motor M, and the load fluctuation of one motor M affects the driving state of the other driving motor M. There is no.

The operation of each circuit will be specifically described below. In FIG. 6A, the constant voltage power supply 31 is connected to the power supply line by combining the series elements 32a and 32b made of inductors and the impedance conversion unit 32 made of the parallel element 32c made of capacitors. The voltage of the constant voltage power source is V ₀ , the currents flowing through the series elements 32a and 32b composed of inductors are I ₀ and I ₁ , respectively, and the voltage applied to the feeder is V ₁
If the inductances of the series elements 32a and 32b are selected so that ωL _S = 1 / ωC _S = ωL _T , then V
_The relationship represented by the equation (1) is established between ₀ and I ₀ and V ₁ and I ₁ .

[0040]

[Equation 1]

From now on, I ₁ and I ₀ are as follows (2),
It can be expressed by equation (3).

[0042]

[Equation 2]

If v ₀ = V ₀ sin (ωt), then I ₁ =
A constant, that is, a constant sinusoidal current is supplied to the power supply lines 12d and 12e. Note that the same effect can be obtained even if the configuration shown in FIGS. 6B to 6D is adopted instead of the configuration shown in FIG.

FIG. 8A shows the power supply line 12d in FIG.
12e and a theory showing the relationship between the pickup resonance circuit unit 51
It is a clear view. However, for the sake of explanation, the guide line 12 and the pickup
Power supply line 12 with a winding ratio of 1: 1 with the up coil 24g
The voltage across d and 12e is V ₁, Current I₁, Picker
Up the voltage across the resonance circuit section 51 to V₃, Current I₃When
To do. A model of this is as shown in FIG.
Is. In FIG. 8B, ω (L₁+ L₃) = 1 / ω
C_PIf the resonance capacitor 51a is selected so that
Voltage V₁, I₁And V₃, I₃Between (4)
The relation of formula is materialized.

[0045]

[Equation 3]

From the equation (4), I ₃ and I ₁ , and V ₁ and V ₃ can be expressed as the following equations (5) and (6).

[0047]

[Equation 4]

In the equation (5), since I ₁ is a constant current, I ₃ = constant, and the pickup resonance circuit section 51 functions as a constant current source. FIG. 8C shows the circuit shown in FIG. 8B as a constant current power supply. Figure 8
In (c), the voltage V across the power supply lines 12d and 12e
₁ and current I ₁ , the voltage to the pickup coil 24g is (L ₁ + L ₃ ) V ₁ / L ₁ , and the current is L ₁ · I ₁ /
(L ₁ + L ₃ ).

FIG. 9 is an explanatory diagram of the impedance converter 52, and parallel elements 52a and 52 composed of capacitors thereof.
Let V _{3 be} the voltage across b and I _{3 be} the input current to the connection point of the series element 52c composed of an inductor.
If the voltage across both ends of 2b is V ₅ and the output current is I ₅ , then ω
If capacitances C ₁₁ and C ₁₂ are selected so that L _I = 1 / ωC ₁₂ and C ₁₁ = C ₁₂ , then V ₃ , I ₃ , V ₅ , and I
_The relationship shown in the following equation (7) is established between the _five .

[0050]

[Equation 5]

From now on, V ₃ and V ₅ are as follows (8),
It can be expressed as in equation (9). V ₃ = jωL ₁ · I ₅ (8)

[0052]

[Equation 6]

As described above, since I ₃ = constant, V ₅ =
It becomes constant, and the output of the impedance converter 52 becomes a constant voltage. That is, a constant voltage is applied to each motor M regardless of its load. Multiple transport vehicles 2
For example, even if one of them is stopped and the load is released, that is, I ₅ = 0, the voltage applied to the power supply line of the pickup unit 24 becomes V ₃ = 0 according to the equation (5), and the other. A constant current is given to the impedance conversion unit 52 through the pickup resonance circuit unit 51 to the driving vehicle 2 being driven, and is converted into a constant voltage there, and another motor M being driven is driven.
Therefore, the stop of one carrier does not adversely affect the driving states of other carriers.

[0054]

As described above, in the system according to the first aspect of the present invention, the constant voltage power source and the impedance conversion section for converting the constant voltage of the constant voltage power source into the constant current and supplying the same to the power supply line are provided. A constant current can always be supplied to the power supply line, and stable power supply to each load becomes possible. In the second to fifth inventions, it is possible to expand the selection range of the impedance conversion unit by properly using the T-type and π-type four-terminal circuits. In the sixth aspect, the number of parts is reduced, and the configuration can be simplified and made compact.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a monorail type transportation facility to which a contactless power supply system according to the present invention is applied.

FIG. 2 is a side view showing the relationship between a guide rail and a carrier vehicle in a monorail system carrier system.

FIG. 3 is an enlarged front view showing a relationship between a guide rail and a carrier vehicle.

FIG. 4 is an enlarged cross-sectional view showing a relationship between a guide rail of a guide rail and a pickup section of a carrier vehicle.

FIG. 5 is a block diagram showing power supply equipment.

FIG. 6 is a circuit diagram showing details of a power supply unit.

FIG. 7 is a circuit diagram showing details of a power receiving unit.

FIG. 8 is a circuit diagram of a feeder line and a pickup unit.

FIG. 9 is an explanatory diagram of an impedance conversion unit.

FIG. 10 is a front view showing a relationship between a conventional guide rail and a carrier vehicle.

FIG. 11 is an enlarged cross-sectional view showing a relationship between a conventional power supply line and a pickup unit.

FIG. 12 is a circuit diagram showing a general constant current circuit.

[Explanation of symbols]

1 Guide rail 2 carrier 3 system controller 4 branching / merging sections 5 branch / merge controller 6 repair line 11 Support arm 12 induction lines 21,22 Body frame 24 Pickup part 24g pickup coil 31 constant voltage power supply 32 Impedance converter 32a, 32b inductor 32c capacitor 51 Pickup resonance circuit 52 Impedance converter 53 Full wave rectifier circuit 54 constant voltage circuit

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuo Kawamatsu 4-17-96 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Prefecture Tsubakimoto Chain Co., Ltd. ) References JP-A-7-227004 (JP, A) SAIKAI Sho 55-61709 (JP, U) JPB 61-33204 (JP, B1) JPB 49-44431 (JP, Y1) JP 6-506099 (JP, A) International publication 93/23909 (WO, A1) International publication 96/20526 (WO, A1) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02J 17/00 B60L 5 / 00 B60M 7/00 B65G 43/00 H01F 38/14

Claims (6)

(57) [Claims] 1. Power is supplied from a power supply line connected to a power supply to a load via a pickup section inductively coupled to the power supply line.
The non-contact power supply system for supplying the power source comprises a constant voltage power source, and an impedance converter for converting the constant voltage from the constant voltage source to a constant current,該I
The impedance converter is an inductor set to resonance.
And a T-type 4-terminal circuit including a capacitor
The series element of the T-type 4-terminal circuit has two inductors.
And parallel elements are composed of capacitors
The common input and output terminals
Between the other input terminal and the output terminal
Connected in series with the connection point between both inductors
A non-contact power supply system , wherein the capacitor is connected between a terminal and the terminal . 2. A power supply line connected to a power source,
Power is supplied to the load via the pickup section that is inductively coupled with
In the contactless power supply system for supplying, the power source is
Converts a constant voltage power supply and a constant voltage from the constant voltage power supply to a constant current
And a impedance converter for conversion, inductors and capacity the impedance <br/> scan conversion unit is set to the resonance state
It is configured by a T-type four-terminal circuit including a shutter, the series element of the T-type four-terminal circuit is configured by two capacitors , and the parallel element is configured by an inductor , and one corresponding input terminal and output terminal. collected by a common terminal, connecting the two capacitors between the corresponding other input terminal and the output terminal in series, b between the common terminal and the connection point between the two capacitors
A contactless power supplying <br/> system you characterized in that connecting the inductor. 3. A power supply line connected to a power source,
Power is supplied to the load via the pickup section that is inductively coupled with
In the contactless power supply system for supplying, the power source is
Converts a constant voltage power supply and a constant voltage from the constant voltage power supply to a constant current
And a impedance converter for conversion, inductors and capacity the impedance <br/> scan conversion unit is set to the resonance state
It is configured by a π-type four-terminal circuit including ata, the series element of the π- type four-terminal circuit is an inductor , and the parallel elements are respectively configured by two capacitors , and one corresponding input terminal and output terminal collected by a common terminal, said inductor is connected between the corresponding other input terminal and an output terminal, at both
Wherein during the connecting end portions of the side and said common terminal each Capacity
A contactless power supply system <br/> arm you characterized in that to connect the motor. 4. A power supply line connected to a power supply,
Power is supplied to the load via the pickup section that is inductively coupled with
In the contactless power supply system for supplying, the power source is
Converts a constant voltage power supply and a constant voltage from the constant voltage power supply to a constant current
And a impedance converter for conversion, inductors and capacity the impedance <br/> scan conversion unit is set to the resonance state
It is configured by a π-type four-terminal circuit including theta, the series element of the π-type four-terminal circuit is a capacitor , and the parallel elements are respectively configured by two inductors , and one corresponding input terminal and output terminal Are used as common terminals, the capacitors are connected between corresponding other input terminals and output terminals, and the inductors are connected between the connection terminals on both sides of the capacitors and the common terminals.
A contactless power supply system <br/> arm you characterized in that to connect the motor. 5. A power supply line connected to a power source,
Power is supplied to the load via the pickup section that is inductively coupled with
In the contactless power supply system for supplying, the power source is
Converts a constant voltage power supply and a constant voltage from the constant voltage power supply to a constant current
And an impedance converter for converting the impedance.
The input voltage and output current are proportional to
Current and output voltage are proportional to the inductor and
A contactless power supply system that is characterized in that are configured by the 4-terminal circuit including a capacitor. 6. The inductor constituting the impedance converting section there plurality, at least one of which a non-contact power supply system according to any one of claims 1 to 5 is a configuration in which the feed line also serves as this.