WO2014049750A1 - 静電結合方式非接触給電装置 - Google Patents
静電結合方式非接触給電装置 Download PDFInfo
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- WO2014049750A1 WO2014049750A1 PCT/JP2012/074785 JP2012074785W WO2014049750A1 WO 2014049750 A1 WO2014049750 A1 WO 2014049750A1 JP 2012074785 W JP2012074785 W JP 2012074785W WO 2014049750 A1 WO2014049750 A1 WO 2014049750A1
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- electrodes
- segment
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- power supply
- switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/05—Circuit arrangements or systems for wireless supply or distribution of electric power using capacitive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
Definitions
- the present invention relates to a non-contact power supply device that supplies power to an electric load on a movable part in a non-contact manner from a fixed portion, and more particularly to an electrostatic coupling type non-contact power supply device in which electrodes are arranged to face each other at a distance.
- a linear motor device generally includes a track member in which N poles and S poles of a plurality of magnets are alternately arranged along a moving direction, and a movable portion configured to include an armature having a core and a coil. Is.
- a deformable power supply cable has been used to supply power to an electric load on a movable part such as a linear motor device.
- a non-contact power feeding device has been proposed in order to eliminate adverse effects such as an increase in the carrying weight due to a power feeding cable and a risk of disconnection due to metal fatigue.
- Patent Document 1 and Patent Document 2 disclose technical examples of electromagnetic induction type non-contact power feeding devices.
- the insulated power feeder for a moving body of Patent Document 1 includes a plurality of primary side coils arranged on the ground, a secondary side coil mounted on the moving body, each primary side coil, and a three-phase AC power source. And a plurality of switches arranged between them, and an overlap sensor for detecting an overlap state between the magnetic poles of the primary side coil and the secondary side coil.
- the overlap sensor detects the overlap of both magnetic poles, the switch is turned on to energize the primary coil, and when it is detected that both magnetic poles are separated, the switch is opened. Accordingly, it is described that the primary side coil is energized only when the secondary side coil is opposed to the primary side coil, and the efficient operation is possible by suppressing the generation of the leakage magnetic flux dissipated in the space.
- the insulated power feeding device for moving body of Patent Document 2 includes a multiple primary side coil connected in series to an AC power supply device capable of adjusting the output voltage, a secondary side coil mounted on the moving body, and each primary side.
- a voltmeter that measures the voltage between the terminals of the coil, a plurality of contactors that short-circuit the terminals of each primary coil, and a controller that controls the opening and closing of each contactor.
- a controller determines the specific primary side coil which the secondary side coil approached from the signal of the voltage between terminals, short-circuits the contactor of other primary side coils, and supplies only the specific primary side coil I am doing so.
- Patent Document 2 it is preferable to suppress the output voltage of the AC power supply device while monitoring the approach of the secondary coil, and to increase the output voltage when causing electromagnetic induction in the secondary coil.
- the contactor can be opened and closed while the output voltage is low to suppress sparks and prevent deterioration.
- the devices of Patent Document 1 and Patent Document 2 are preferable in that the power supply efficiency can be improved by energizing only a specific primary coil, but the target is limited to the electromagnetic induction system, and the non-electrostatic coupling system is not used. It cannot be used for a contact power supply device.
- Patent Document 1 since a secondary coil, that is, an overlap sensor (position detection sensor) for detecting the position of the moving body is required, the cost increases accordingly. In that respect, in Patent Document 2, an increase in cost can be suppressed by using a voltmeter instead of the overlap sensor.
- Patent Document 2 since the number of primary side coils to be energized changes, it is necessary to adjust the output voltage of the AC power supply device. In addition, it is necessary to adjust the output voltage in order to suppress sparks. For this reason, it is difficult and complicated to control the output voltage of the AC power supply device, and the power supply efficiency tends to decrease, and the cost of the AC power supply device also increases.
- the present invention has been made in view of the above-described problems of the background art, and should solve the problem of providing an electrostatic coupling type non-contact power feeding device capable of improving power feeding efficiency as compared with conventional non-contact power feeding using electrodes. Let it be an issue.
- the invention of the electrostatic coupling type non-contact power feeding device includes a power feeding electrode provided in a fixed portion, a high frequency power supply circuit that feeds high frequency power to the power feeding electrode, and the fixed Provided in a movable part that is movably mounted on a part, receiving a high-frequency power in a non-contact manner, spaced apart from the power-feeding electrode, and converting the high-frequency power received by the power-receiving electrode
- An electrostatic coupling type non-contact power feeding device including a power receiving circuit that feeds an electric load on a movable part, wherein the power feeding electrode is arranged in a moving direction of the movable part, and the high frequency power circuit
- a plurality of switch electrodes that are individually fed from each other, connected between the high-frequency power supply circuit and each of the partition electrodes, and capable of opening and closing independently of each other, and flows to each of the partition electrodes Section current Control is performed so as to close only a part of the plurality
- the switch control unit determines a traveling direction of the movable unit based on an increase / decrease state of the segment current in a plurality of segment electrodes through which the segment current flows.
- the specific switches corresponding to the plurality of segment electrodes through which the segment current flows and the segment electrodes arranged in the traveling direction thereof are closed, and the switches other than the specific switches are opened.
- each of the segmented electrodes has a length in the moving direction of the movable portion shorter than a length of the power receiving electrode, and a distance between them is small.
- the switch control unit determines a traveling direction of the movable unit based on an increase / decrease state of the segment current in two or more segment electrodes in which the segment current flows, and two or more segments in which the segment current flows A total of three or more specific switches corresponding to the segment electrodes and one segment electrode arranged in the traveling direction thereof are closed.
- the switch control unit closes the specific switch corresponding to the segment electrode where the segment current is large and the segment electrodes on both sides of the segment electrode. Open all other parts.
- each of the segmented electrodes has a length in the moving direction of the movable portion shorter than a length of the power receiving electrode, and a distance between them is small.
- the switch control unit closes a total of three or more specific switches corresponding to one or more section electrodes having a large section current and one section electrode on each side thereof.
- the invention according to claim 6 is the invention according to claim 3 or 5, wherein each of the segmented electrodes has a length in the moving direction of the movable portion exceeding 0.5 times the length of the power receiving electrode and less than 1 time.
- the switch controller closes a total of three specific switches.
- the switch control unit is configured to be at least one of when the device is started and when the switch that is closed during operation of the device becomes unknown. Once all the switches are temporarily closed, the current detection circuit individually detects the segment currents flowing through all the segment electrodes, and then the switch control unit determines the switch to be closed.
- the power feeding electrode is divided into a plurality of segmented electrodes and arranged in the moving direction of the movable portion and individually fed, the power receiving electrodes of the movable portion face each other.
- a sufficient power supply performance can be obtained by supplying a section current only to the section electrodes.
- the segment electrode with which the power receiving electrode is opposed and the segment electrode with which it is next opposed can be distinguished from at least one of the magnitude of the segment current and the increase / decrease state. Therefore, if only a part of the plurality of switches are closed and the output voltage of the high-frequency power supply circuit is controlled to be applied, the output voltage is not applied to the section electrode that is distant from the power receiving electrode. Thereby, the power loss due to the leakage of the electric field from the section electrode can be suppressed, and the power feeding efficiency can be improved as compared with the conventional case.
- the traveling direction of the movable part is determined based on the increase / decrease state of the segment current in the plurality of segment electrodes, and the segment electrode to which the output voltage is applied is determined. Therefore, a voltage is reliably applied to the division electrode facing the power receiving electrode and the next division electrode to be opposed, and no voltage is applied to the other division electrodes apart from the power receiving electrode, which is more efficient than the conventional method. Can be improved.
- each section electrode is made shorter than the power receiving electrode, the power receiving electrode always faces two or more section electrodes, and the progression of the movable part based on the increase / decrease state of the section current It becomes easy to determine the direction.
- the output voltage is applied to the segment electrode where the segment current is large and the segment electrodes on both sides thereof. Therefore, a voltage is reliably applied to the division electrode facing the power receiving electrode and the next division electrode to be opposed, and no voltage is applied to the other division electrodes apart from the power receiving electrode, which is more efficient than the conventional method. Can be improved.
- each segment electrode is shorter than the power receiving electrode, the power receiving electrode always faces two or more segment electrodes, and the segment is roughly proportional to the size of the facing electrode area.
- the current changes. For this reason, it is only necessary to apply a voltage to each of the segment electrodes on both sides of the segment electrode in which the segment current is large. Therefore, it is possible to reduce the number of section electrodes to which a voltage is applied, and to significantly improve the power supply efficiency.
- the power reception electrode faces two or three division electrodes.
- sufficient power supply performance can be obtained by applying a voltage to the three segmented electrodes. Thereby, the number of the division electrodes to which the voltage is applied can be reduced to the minimum three, and the power supply efficiency can be significantly improved.
- the movable part is temporarily detected by temporarily closing all the switches and individually detecting the divided currents flowing through all the divided electrodes. Can be determined. Therefore, the subsequent power supply control can be properly performed. Further, even when the switch to be closed becomes unknown for some reason during the operation of the device, the subsequent power supply control can be appropriately performed by performing the same operation and determination as when the device is started.
- FIG. 1 is a single-line connection diagram schematically showing an overall configuration of an electrostatic coupling type non-contact power feeding device according to a first embodiment of the present invention. It is a figure explaining the action
- FIG. 5 is a diagram for explaining the operation and action following FIG. 4.
- FIG. 6 is a diagram for explaining the operation and action subsequent to FIG. 5. It is a figure which shows typically a part of structure of the electrostatic coupling type non-contact electric power feeder of 3rd Embodiment.
- FIG. 1 is a perspective view showing an overall configuration of a component mounting machine 10 to which the electrostatic coupling type non-contact power feeding device 1 according to the first embodiment of the present invention can be applied.
- the component mounter 10 is a device that mounts a large number of components on a board, and is configured by two sets of component mounting units having the same structure arranged substantially symmetrically.
- the component mounting unit in a state where the right front cover of FIG. 1 is removed will be described as an example.
- the width direction of the component mounter 10 from the left back side to the right front side in the figure is the X-axis direction
- the longitudinal direction of the component mounter 10 is the Y-axis direction.
- the component mounter 10 is configured by assembling a substrate transport device 110, a component supply device 120, two component transfer devices 130, 140, and the like on a machine base 190.
- the board transfer device 110 is disposed so as to cross the vicinity of the center in the longitudinal direction of the component mounting machine 10 in the X-axis direction.
- the substrate transport device 110 has a transport conveyor (not shown) and transports the substrate in the X-axis direction.
- substrate conveyance apparatus 110 has an unillustrated clamp apparatus, and fixes and hold
- the component supply device 120 is provided at the front portion (left front side in FIG. 1) and the rear portion (not visible in the drawing) of the component mounter 10.
- the component supply device 120 includes a plurality of cassette-type feeders 121, and supplies components continuously to the two component transfer devices 130 and 140 from the carrier tape set in each feeder 121.
- the two component transfer devices 130 and 140 are so-called XY robot type devices that can move in the X-axis direction and the Y-axis direction.
- the two component transfer apparatuses 130 and 140 are disposed on the front side and the rear side in the longitudinal direction of the component mounter 10 so as to face each other.
- Each component transfer device 130, 140 has a linear motor device 150 for movement in the Y-axis direction.
- the linear motor device 150 includes a track member 151 and an auxiliary rail 155 common to the two component transfer devices 130 and 140, and a linear movable portion 153 for each of the two component transfer devices 130 and 140.
- the track member 151 corresponds to a part of the fixed portion 2 of the present invention, and extends in the Y-axis direction that is the moving direction of the linear movable portion 153.
- the track member 151 includes a bottom surface 15A disposed on the lower side of the linear movable portion 153 and side surfaces 15B disposed on both sides of the linear movable portion 153, and has a groove shape opening upward.
- a plurality of magnets 152 are arranged in the Y-axis direction on the inner side of the facing side surface 15B of the track member 151.
- the linear movable part 153 is movably mounted on the track member 151.
- the linear movable portion 153 corresponds to the movable portion 3 of the present invention, and includes a movable main body portion 160, an X-axis rail 161, a mounting head 170, and the like.
- the movable main body 160 extends in the Y-axis direction, and armatures that generate a propulsive force are disposed on opposite sides of the movable main body 160 so as to face the magnets 152 of the track member 151.
- the X-axis rail 161 extends from the movable main body 160 in the X-axis direction.
- One end 162 of the X-axis rail 161 is coupled to the movable main body 160 and the other end 163 is movably mounted on the auxiliary rail 155 so that the X-axis rail 161 moves integrally with the movable main body 160 in the Y-axis direction. It has become.
- the component mounting head 170 is mounted on the X-axis rail 161 and moves in the X-axis direction.
- a suction nozzle (not shown) is provided at the lower end of the component mounting head 170. The suction nozzle sucks and collects components from the component supply device 120 using negative pressure and mounts them on the substrate at the mounting work position.
- a ball screw feed mechanism (not shown) provided on the X-axis rail 161 has an X-axis motor that rotationally drives the ball screw, and drives the component mounting head 170 in the X-axis direction.
- a plurality of electrical components equipped in the linear movable part 153 (movable part 3) for operating the component mounting head 170 corresponds to the electric load of the present invention.
- the armature of the linear motor device 150 is also included in the electric load.
- the component mounter 10 further includes a display setting device 180 for exchanging information with an operator, a camera (not shown) that images a board and components, and the like.
- FIG. 2 is a configuration diagram conceptually illustrating a general electrostatic coupling type non-contact power feeding device 1Z.
- 2 is the moving direction of the movable part 3 and the extending direction of the track member 151 on the fixed part 2 side.
- the front side surface of the track member 151 is omitted.
- the track member 151 is provided with two power supply electrodes 4X and 4Y.
- the two power supply electrodes 4X and 4Y are symmetrical with each other and are formed in an L-shaped cross section using a metal plate or the like.
- One side of the L shape of the two power supply electrodes 4X and 4Y is disposed in contact with the bottom surface 15A of the track member 151.
- the other sides of the L shape of the two power supply electrodes 4X and 4Y are arranged in parallel to the magnet 152 on the side surface 15B of the track member 151. Further, the two power supply electrodes 4X and 4Y are disposed over substantially the entire length of the track member 151 (the total length in the left-right direction in FIG. 2).
- the high frequency power supply circuit 5 is disposed on the fixed part 2 side.
- the high frequency power supply circuit 5 supplies, for example, high frequency power in the 100 kHz to MHz band between the two power supply electrodes 4X and 4Y.
- the output voltage and output frequency of the high-frequency power supply circuit 5 can be adjusted, and examples of the output voltage waveform include a sine wave and a rectangular wave.
- the movable part 3 is provided with two power receiving electrodes 6X and 6Y.
- the two power receiving electrodes 6X and 6Y are symmetrical with each other, and are formed in a L-shaped cross section using a metal plate or the like.
- the two power receiving electrodes 6X and 6Y are disposed over substantially the entire length LZ of the movable portion 3, but are significantly shorter than the power feeding electrodes 4X and 4Y.
- the two power receiving electrodes 6X and 6Y are arranged in parallel and spaced apart from the power feeding electrodes 4X and 4Y on the fixed portion 2 side, respectively.
- condenser is each comprised between the electrodes 4X and 4Y for electric power feeding, and the electrodes 6X and 6Y for electric power reception, and non-contact electric power feeding of an electrostatic coupling system is performed.
- the movable part 3 is equipped with a power receiving circuit and an electric load (not shown).
- the two power receiving electrodes 6X and 6Y are electrically connected to the input side of the power receiving circuit, and the output side of the power receiving circuit is electrically connected to the electric load.
- the power receiving circuit converts the high frequency power received by the power receiving electrodes 6X and 6Y and supplies the electric load to the electric load.
- the power receiving circuit is configured in accordance with the operating voltage specification of the electric load, and for example, a full-wave rectifier circuit or an inverter circuit is used.
- a series resonant circuit is used to improve power supply capacity and power supply efficiency. That is, a resonance inductor is inserted and connected in the high frequency power supply circuit 5 or the power receiving circuit so that series resonance occurs at the output frequency of the high frequency power supply circuit 5.
- a coil is used as the resonance inductor.
- the resonance inductor is connected in series to a capacitor composed of the power supply electrodes 4X and 4Y and the power reception electrodes 6X and 6Y.
- the inductance value of the resonance inductor is determined so that the imaginary part of the impedance at the output frequency of the series resonance circuit is zero. Further, the output frequency of the high frequency power supply circuit 5 is also variably adjusted so as to match the resonance frequency.
- the two power receiving electrodes 6X and 6Y are much shorter than the power feeding electrodes 4X and 4Y. Accordingly, the range of the electrode surface areas of the power supply electrodes 4X and 4Y facing the power reception electrodes 6X and 6Y is limited. Then, as indicated by a one-dot chain line in FIG. 2, an electric field is radiated wastefully from a range AZ that does not face the power receiving electrodes 6X and 6Y among the surfaces of the power feeding electrodes 4X and 4Y, resulting in power loss. Therefore, in the present invention, the power feeding electrodes 4X and 4Y are divided into a plurality of segmented electrodes, and a voltage is applied only to a part thereof.
- FIG. 3 is a single-line connection diagram schematically showing the overall configuration of the electrostatic coupling type non-contact power feeding device 1 of the first embodiment of the present invention.
- the reciprocating electrical conductor is shown by one line, and only one set of electrodes and the like is shown by two. Further, the horizontal direction in FIG. 3 is the moving direction of the movable portion 3.
- the electrostatic coupling type non-contact power feeding device 1 is a device that performs non-contact power feeding to the electric load 69 on the movable part 3 by the electrostatic coupling method.
- the electrostatic coupling type non-contact power feeding device 1 includes a feeding electrode 4 including a plurality of section electrodes 41 to 46, a high frequency power supply circuit 5, a plurality of switches 71 to 76, a current detection circuit 8, and a switch on the fixed portion 2 side. And a power receiving electrode 6 and a power receiving circuit 65 on the movable part 3 side.
- the feeding electrode 4 on the fixed part 2 side is arranged in the moving direction of the movable part 3 and is composed of a plurality of segmented electrodes 41 to 46 that are individually fed from the high frequency power supply circuit 5.
- Each of the segment electrodes 41 to 46 is divided into six groups by roughly dividing the power supply electrodes 4X and 4Y shown in FIG. Note that the number of groups to be divided is not limited to six.
- the segment electrodes 41 to 46 are arranged so that the distance between them is as small as possible within a range in which electrical insulation can be secured.
- the left end side of the power feeding electrode 4 is referred to as a first segment electrode 41, and is numbered in the following order, and the right end side in the drawing is referred to as a sixth segment electrode 46.
- the plurality of switches 71 to 76 are respectively connected between the high-frequency power supply circuit 5 and the respective segmental electrodes 41 to 46, and can be opened and closed independently of each other. Therefore, the number of the switches 71 to 76 matches the number of sets of the segment electrodes 41 to 46, and is referred to as the first to sixth switches 71 to 76 for convenience.
- the output voltage of the high frequency power supply circuit 5 is applied to the respective segmental electrodes 41 to 46.
- the receiving electrodes 6 are opposed to the respective divisional electrodes 41 to 46, the divisional currents I1 to I6 flow and non-contact power feeding is performed. Loss occurs.
- the switches 71 to 76 electromagnetic contactors or the like can be used.
- the current detection circuit 8 individually detects the first to sixth segment currents I1 to I6 flowing through the first to sixth segment electrodes 41 to 46, respectively.
- the current detection circuit 8 can be composed of a current detection unit and a current reading unit (not shown).
- the current detection unit is individually provided between the high-frequency power supply circuit 5 and the switches 71 to 76, and outputs detection signals corresponding to the magnitudes of the segment currents I1 to I6. Examples of the current detection unit include a current transformer, a shunt resistor, and a Hall element.
- the current reading unit converts the detection signal output from the current detection unit into current information and transfers the current information to the switch control unit 9.
- the switch control unit 9 controls to close only a part of the plurality of switches 71 to 76 based on the magnitudes and the increasing / decreasing states of the respective segment currents I1 to I6 that change with the movement of the movable unit 3. .
- a sequencer programmable controller
- Detailed functions of the switch control unit 9 will be described later together with the operation and action.
- the power receiving electrode 6 on the movable part 3 side can have the same shape as the power receiving electrodes 6X and 6Y shown in FIG.
- the length L1 in the moving direction of each of the segment electrodes 41 to 46 is in the range of more than 0.5 and less than 1 times the length LZ of the power receiving electrode 6.
- FIG. 3 illustrates a case where the length L1 of each of the segment electrodes 41 to 46 is about 0.7 times the length LZ of the power receiving electrode 6.
- the present invention does not limit this range, and the length L1 of each of the segment electrodes 41 to 46 may be less than 0.5 times or more than 1 time the length LZ of the power receiving electrode 6.
- the input side of the power receiving circuit 65 is electrically connected to the power receiving electrode 6, and the output side is electrically connected to the electric load 69.
- the power receiving circuit 65 converts the high frequency power received by the power receiving electrode 6 and supplies the electric load 69 with power.
- the power receiving circuit 65 is configured in accordance with the operating voltage specification of the electric load 69, and can be configured by, for example, a full-wave rectifier circuit or an inverter circuit.
- FIG. 4 is a diagram for explaining the operation and action of the electrostatic coupling type non-contact power feeding device 1 of the first embodiment.
- 5 is a diagram for explaining the operation and action following FIG. 4
- FIG. 6 is a diagram for explaining the action and action following FIG.
- the switch controller 9 When starting the apparatus 1, the switch controller 9 temporarily closes all the switches 71 to 76 once.
- the current position and the traveling direction of the movable part 3 illustrated in FIG. 4 are assumed. That is, a current position is assumed in which the majority of the surface of the power receiving electrode 6 of the movable portion 3 faces the second segment electrode 42 and the remaining part faces the third segment electrode 43. Further, as shown by the arrow F1, it is assumed that the movable portion 3 proceeds in the right direction.
- the capacitance of each capacitor formed by the segment electrodes 41 to 46 and the power receiving electrode 6 is approximately proportional to the width of the opposing electrode area. For this reason, the capacitance C2 of the capacitor constituted by the second segment electrode 42 and the power receiving electrode 6 is large, and the capacitance C3 of the capacitor constituted by the third segment electrode 43 and the power reception electrode 6 is static. It becomes smaller than the capacitance C2. Further, the other first, fourth to sixth segmented electrodes 41, 44 to 46 hardly generate capacitance. Further, the magnitudes of the respective segment currents I1 to I6 are approximately proportional to the magnitude of the capacitance.
- the switch control unit 9 can determine the positions of the movable unit 3 and the power receiving electrode 6.
- the switch control part 9 can determine the progress of the movable part 3 in the right direction F1. Immediately after the determination, the switch control unit 9 makes a total of three second corresponding to the second and third segment electrodes 42 and 43 through which the segment current flows and the fourth segment electrode arranged in the traveling direction thereof. Maintain the closed state of the fourth switches 72 to 74, and open the other first, fifth, and sixth switches 71, 75, and 76.
- the power receiving electrode 6 is in the second to fourth segment electrodes 42. , 43, and 44.
- the second segment current I2 decreases
- the third segment current I3 maintains the maximum value
- the fourth segment current I4 starts to increase from zero.
- the power receiving electrode 6 is third, fourth. It comes to oppose two of the divisional electrodes 43 and 44. At this time, the second segment current I2 becomes zero, the third segment current I2 starts to decrease from the maximum value, and the fourth segment current I4 increases. Accordingly, the switch control unit 9 can determine the progress of the movable unit 3 in the right direction F1, opens the switch 72 corresponding to the second segment electrode 42, and opens the switch 75 corresponding to the fifth segment electrode 45. close.
- the switch control unit 9 opens the switch 73 corresponding to the third segment electrode 43 and closes the switch 76 corresponding to the sixth segment electrode 46.
- the switch control unit 9 can determine without error the progress of the movable unit 3 in the left direction F2.
- the switch control unit 9 can determine the traveling direction of the movable unit 3, always close the three adjacent switches, and open the remaining three switches to properly perform power feeding control.
- the switch control unit 9 In the middle of the operation of the device 1, even when the closed switches 71 to 76 are unclear due to, for example, missing measurement of the segment currents I1 to I6, the switch control unit 9 once sets all the switches. Is temporarily closed, and the same operation and determination as when the apparatus 2 is started are performed.
- the power feeding electrode 4 is divided into six section electrodes 41 to 46, arranged in the moving direction of the movable portion 3, and individually fed. . Further, since the lengths of the division electrodes 41 to 46 are in the range of more than 0.5 times less than the length of the power reception electrode 6 and less than one time, the power reception electrode 6 faces two or three division electrodes. A sufficient power supply performance can be obtained by applying a voltage to the three segmented electrodes.
- the switch control unit 9 determines the traveling direction of the movable unit 3 based on the increase / decrease state of the segment currents I1 to I6 in the plurality of segment electrodes 41 to 46, and determines the segment electrodes 41 to 46 to which the voltage is applied. Therefore, a voltage is reliably applied to the segment electrode facing the power receiving electrode 6 and the segment electrode scheduled to be opposed next, and no voltage is applied to the other segment electrodes apart from the power receiving electrode 6. As a result, power loss due to leakage of the electric field from the divisional electrodes 41 to 46 can be suppressed, and the power supply efficiency can be significantly improved as compared with the conventional case. Specifically, the number of segmented electrodes 41 to 46 to which a voltage is applied is half of all six, so that the power loss due to the leakage of the electric field is about half or less than the conventional one.
- the six segmented electrodes 41 to 46 are connected in parallel to the high frequency power supply circuit 5 and individually applied with an output voltage, and the capacitor constituted by the electrodes 41 to 46, 6 has no concern about sparks unlike the coil. Therefore, the output voltage of the high frequency power supply circuit 5 may be substantially constant. Therefore, output voltage control becomes easy and the cost of the high frequency power supply circuit 5 is reduced.
- the electrostatic coupling type non-contact power feeding device of the second embodiment will be described.
- the whole structure of an apparatus is the same as 1st Embodiment, and only the electric power feeding control method of the switch control part 9 differs. That is, the switch control part 9 of 2nd Embodiment closes the specific switch corresponding to the division electrode with which division electric current is large, and the division electrode of the both sides, and opens other than a specific switch.
- power feeding control can be appropriately performed only by comparing the magnitudes of the segment currents without determining the traveling direction of the movable part 3. Since the effect in 2nd Embodiment is the same as that of 1st Embodiment, description is abbreviate
- FIG. 7 is a diagram schematically showing a part of the configuration of the electrostatic coupling type non-contact power feeding device 1A of the third embodiment.
- the configuration of the other part on the fixed part 2A side is the same as that of the first embodiment, and the high-frequency power supply circuit, the current detection circuit, and the switch control part are not shown.
- the power receiving electrode 6, the power receiving circuit 65, and the electric load 69 of the movable part 3 are the same as those in the first embodiment.
- the length L2 of the sorting electrode 4H is about 0.35 times the length of the power receiving electrode 6LZ. That is, the length LZ of the power receiving electrode 6 is slightly smaller than the length L2 of the section electrode 4H, and the power receiving electrode 6 always faces the three or four section electrodes 4H. For this reason, as in the first embodiment, when the direction of travel of the movable part 3 is determined and power feeding control is performed, it is sufficient to close the total four switches 7H and apply voltage to the four segmented electrodes 4H. Can be maintained.
- the number of segmented electrodes H to which a voltage is applied is four (1/3), which is 12 (1/3), and the power loss due to the leakage of the electric field is about (1/3) or less of the conventional.
- the effect of improving the power supply efficiency is more remarkable than in the first embodiment.
- the segmented electrode 4H is subdivided, the power feeding efficiency is further improved by that amount, so that a large number of switches 7H are required, and the current detection circuit becomes complicated.
- the internal configurations of the current detection circuit 8 and the switch control unit 9 can employ various aspects other than those described in the first embodiment. Further, the switching control method of the switches 71 to 76 and 7H by the switch control unit 9 can be modified as appropriate. For example, the traveling speed of the movable part 3 is calculated from the time change rate of the section current, the timing at which the movable section 3 reaches the next section electrode is estimated, and the switch is controlled to close from the open state at that timing. May be. Various other modifications and applications of the present invention are possible.
- the electrostatic coupling type non-contact power feeding device of the present invention is not limited to the board work equipment such as a component mounting machine, but has other movable industries that have a movable part and require non-contact power feeding. It can also be widely used for equipment. Further, it can be used for a non-contact power supply without using a pantograph or the like to a running train, or a non-contact power supply from a road surface to a running electric vehicle.
- Electrostatic coupling type non-contact power feeding device 2 Fixed portion 3: Movable portion 4, 4X, 4Y: Feeding electrode, 41 to 46: 1st to 6th section electrode 4H: Section electrode 5: High frequency power supply circuit 6, 6X, 6Y: Power receiving electrode 65: Power receiving circuit 69: Electric load 71 to 76: 1st to 6th switch 7H: Switch 8: Current detection circuit 9: Switch control unit 10: Component mounter 110: Board transfer device 120: Component supply device 130, 140: Component transfer device 150: Linear motor device 151: Track member 160: Movable main body 161: X-axis rail 170: Mounting head 180: Display setting device 190: Machine base
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Inverter Devices (AREA)
Abstract
Description
2:固定部 3:可動部
4、4X、4Y:給電用電極、
41~46:第1~第6区分電極 4H:区分電極
5:高周波電源回路
6、6X、6Y:受電用電極
65:受電回路 69:電気負荷
71~76:第1~第6開閉器 7H:開閉器
8:電流検出回路
9:開閉器制御部
10:部品実装機
110:基板搬送装置 120:部品供給装置
130、140:部品移載装置 150:リニアモータ装置
151:軌道部材 160:可動本体部 161:X軸レール
170:実装ヘッド 180:表示設定装置 190:機台
Claims (7)
- 固定部に設けられた給電用電極と、
前記給電用電極に高周波電力を給電する高周波電源回路と、
前記固定部に移動可能に装架された可動部に設けられ、前記給電用電極に離隔対向して非接触で高周波電力を受け取る受電用電極と、
前記受電用電極が受け取った高周波電力を変換して前記可動部上の電気負荷に給電する受電回路とを備えた静電結合方式非接触給電装置であって、
前記給電用電極は、前記可動部の移動方向に列設されるとともに、前記高周波電源回路から個別に給電される複数の区分電極からなり、
前記高周波電源回路と各前記区分電極との間にそれぞれ接続され、互いに独立して開閉操作可能な複数の開閉器と、
各前記区分電極に流れる区分電流を個別に検出する電流検出回路と、
前記可動部の移動に伴って変化する各前記区分電流の大きさおよび増減状況の少なくとも一方に基づいて、前記複数の開閉器の一部のみを閉じるように制御する開閉器制御部と、をさらに備えた静電結合方式非接触給電装置。 - 請求項1において、
前記開閉器制御部は、前記区分電流が流れている複数の区分電極における前記区分電流の増減状況に基づいて前記可動部の進行方向を判定し、前記区分電流が流れている複数の区分電極およびその進行方向に配設された区分電極に対応する特定の開閉器を閉じ、前記特定の開閉器以外を開く静電結合方式非接触給電装置。 - 請求項2において、
各前記区分電極は、前記可動部の移動方向の長さが前記受電用電極の長さよりも短く、かつ、相互間の離間距離が小さく、
前記開閉器制御部は、前記区分電流が流れている2個以上の区分電極における前記区分電流の増減状況に基づいて前記可動部の進行方向を判定し、前記区分電流が流れている2個以上の区分電極およびその進行方向に配設された1個の区分電極に対応する合計3個以上の特定の開閉器を閉じる静電結合方式非接触給電装置。 - 請求項1において、
前記開閉器制御部は、前記区分電流が大きくなっている区分電極およびその両側の区分電極に対応する特定の開閉器を閉じ、前記特定の開閉器以外を開く静電結合方式非接触給電装置。 - 請求項4において、
各前記区分電極は、前記可動部の移動方向の長さが前記受電用電極の長さよりも短く、かつ、相互間の離間距離が小さく、
前記開閉器制御部は、前記区分電流が大きくなっている1個以上の区分電極およびその両側の各1個の区分電極に対応する合計3個以上の特定の開閉器を閉じる静電結合方式非接触給電装置。 - 請求項3または5において、
各前記区分電極は、前記可動部の移動方向の長さが前記受電用電極の長さの0.5倍を超え1倍未満の範囲にあり、
前記開閉器制御部は、合計3個の特定の開閉器を閉じる静電結合方式非接触給電装置。 - 請求項1~6のいずれか一項において、
装置始動時および装置作動の途中で閉じる開閉器が不明になった時の少なくとも一方の時に、前記開閉器制御部は一旦全ての開閉器を暫定的に閉じ、前記電流検出回路は全ての区分電極に流れる区分電流を個別に検出し、その後に前記開閉器制御部は閉じる開閉器を決定する静電結合方式非接触給電装置。
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US14/430,636 US9831720B2 (en) | 2012-09-26 | 2012-09-26 | Electrostatic-coupling contactless power supply device |
CN201280075963.7A CN104662773B (zh) | 2012-09-26 | 2012-09-26 | 静电耦合式非接触供电装置 |
EP12885421.3A EP2903131B1 (en) | 2012-09-26 | 2012-09-26 | Electrostatic-coupling-type non-contact power supply apparatus |
JP2014537926A JP6049742B2 (ja) | 2012-09-26 | 2012-09-26 | 静電結合方式非接触給電装置 |
PCT/JP2012/074785 WO2014049750A1 (ja) | 2012-09-26 | 2012-09-26 | 静電結合方式非接触給電装置 |
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JPWO2014049750A1 (ja) | 2016-08-22 |
JP6049742B2 (ja) | 2016-12-21 |
US20150249366A1 (en) | 2015-09-03 |
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US9831720B2 (en) | 2017-11-28 |
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