KR102122396B1 - Combining form type wireless power transmission system for unmanned aerial vehicle - Google Patents

Abstract

A hybrid wireless power transmission system is provided. A hybrid wireless power transmission system according to an embodiment of the present invention includes a wireless power transmission module having a wireless power transmission antenna for wirelessly transmitting power supplied from a power supply unit; And a wireless power receiving module having a wireless power receiving antenna for receiving wireless power transmitted from the wireless power transmitting module, wherein the wireless power transmitting antenna is a flat antenna in which a conductive member is wound in a loop shape, The antenna for wireless power reception is a solenoid-type antenna wound along the longitudinal direction so that the conductive member wraps around the circumferential surface of the magnetic core having a predetermined length.

Description

A combined wireless power transmission system and a wireless power transmission system for an unmanned aerial vehicle including the same {Combining form type wireless power transmission system for unmanned aerial vehicle}

The present invention relates to a wireless power transmission system, and more particularly, to a hybrid wireless power transmission system in which antennas for wireless power transmission are configured in different forms.

Wireless power transmission technology is a technology for wirelessly transmitting electrical energy to a desired device. Such wireless power transmission technology has already begun to be applied to electric motors or transformers using electromagnetic induction in the 1800s, and since then, a method of transmitting electric energy by radiating electromagnetic waves such as radio waves or lasers has also been attempted.

The above-described wireless power transmission technology is very convenient because there is no need to use a separate wired cable for charging. Accordingly, attempts to apply wireless power transmission technology to various electronic devices are increasing. However, in the wireless power transmission technology, smooth power transmission is performed only when the wireless power transmission module and the wireless power reception module are aligned with each other.

That is, the conventional wireless power transmission technology has a problem in that the degree of freedom of charging is very limited. Accordingly, in order to charge the battery of an unmanned aerial vehicle such as a drone in a wireless manner, it is urgent to develop a form suitable for this.

KR 10-2016-0097399 A

The present invention has been devised in view of the above points, and an object thereof is to provide a hybrid wireless power transmission system capable of increasing charging freedom and a wireless power transmission system for an unmanned aerial vehicle.

In order to achieve the above object, the present invention provides a wireless power transmission module having a wireless power transmission antenna for wirelessly transmitting power supplied from a power supply; And a wireless power receiving module having a wireless power receiving antenna for receiving wireless power transmitted from the wireless power transmitting module, wherein the wireless power transmitting antenna is a flat antenna in which a conductive member is wound in a loop shape, The antenna for wireless power reception provides a composite wireless power transmission system, which is a solenoid-type antenna wound along a lengthwise direction so that a conductive member surrounds a circumferential surface of a magnetic core having a predetermined length.

Further, the antenna for wireless power transmission may be an antenna pattern formed in a loop shape on one surface of the circuit board. Alternatively, the antenna for wireless power transmission may be a flat coil in which a conductive member is wound in a loop shape.

In addition, when the wireless power receiving module and the wireless power transmitting module are aligned, the magnetic core may be disposed on one side of an empty space formed at a central region of the antenna for wireless power transmission.

On the other hand, the present invention can be vertically lowered and vertically raised through a plurality of power generators that are driven using a power source of a battery, and an unmanned flying device having a wireless power receiving module for receiving wireless power for charging the battery; It provides a wireless power transmission system for an unmanned air vehicle comprising a; station with a built-in wireless power transmission module for wirelessly transmitting the power supplied from the power supply so that the battery can be charged when landing the unmanned air vehicle.

In addition, the wireless power receiving module may include a solenoid type wireless power receiving antenna, and the wireless power transmitting module may include a flat type wireless power transmitting antenna.

In addition, the station, the control module; And at least one movable member moving along the X-axis direction and the Y-axis direction orthogonal to each other through the control of the control module. At this time, the wireless power transmission module may be fixed to one side of the movable member. Accordingly, the wireless power transmission module may be changed into an alignment state with the wireless power reception module by changing its position through movement of the movable member.

In addition, the position of the wireless power transmission module may be changed to an alignment state for implementing optimal charging efficiency with the wireless power reception module.

As another example, the station may further include a rotating member rotatably coupled to the movable member. Through this, the position of the wireless power transmission module may be changed in alignment with the wireless power reception module through linear movement and rotation.

According to the present invention, the antenna for wireless power transmission is provided as a flat type antenna and the antenna for wireless power reception is provided as a solenoid type antenna, so that the influence of the angle during alignment for wireless charging can be excluded. Through this, it is possible to increase the degree of freedom of charging between the wireless power receiving module and the wireless power transmitting module, and it can be effectively applied to various electronic devices using batteries.

1 is a schematic diagram showing a hybrid wireless power transmission system according to an embodiment of the present invention,
Figure 2 is a schematic diagram showing another form of a wireless power transmission antenna that can be applied to a hybrid wireless power transmission system according to an embodiment of the present invention,
3 is a view for explaining the degree of freedom of charging of the hybrid wireless power transmission system according to an embodiment of the present invention,
Figure 4 is a schematic diagram showing a wireless power transmission system for an unmanned aerial vehicle according to an embodiment of the present invention,
5 is a view showing a method in which a wireless power transmission module is changed from an initial position to an alignment position in a wireless power transmission system for an unmanned aerial vehicle according to an embodiment of the present invention;
6 is a schematic diagram showing a wireless power transmission system for an unmanned aerial vehicle according to another embodiment of the present invention, and
7 is a view showing a method in which a wireless power transmission module is changed from an initial position to an aligned position in a wireless power transmission system for an unmanned aerial vehicle according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily practice. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. In the drawings, parts not related to the description are omitted in order to clearly describe the present invention, and the same reference numerals will be added to the same or similar elements throughout the specification.

The hybrid wireless power transmission system 100,200 according to an embodiment of the present invention includes the wireless power transmission modules 110 and 210 and the wireless power reception module 120 as shown in FIGS. 1 and 2.

The wireless power transmission modules 110 and 210 may generate a magnetic field using power supplied through a power supply source and transmit power in a wireless manner together with the magnetic field. In addition, the wireless power receiving module 120 may generate power required by using induced electromotive force by receiving power transmitted from the wireless power transmitting modules 110 and 210. Here, the power supply source may be commercial power supplied through a power line or a known battery.

At this time, the hybrid wireless power transmission system 100,200 according to an embodiment of the present invention is a wireless power transmission antenna for wireless power transmission module (110,210) for transmitting wireless power (111) and wireless for receiving wireless power The antennas 121 for receiving wireless power of the power receiving module 120 may be configured in different forms.

Specifically, the wireless power transmission module 110, 210 may include a wireless power transmission antenna 111 for transmitting wireless power and a shielding sheet 112 disposed on one surface of the wireless power transmission antenna 111. The wireless power transmission antenna 111 may be a flat antenna wound in a loop shape.

In addition, the wireless power receiving module 120 has a bar-shaped magnetic body core 122 having a predetermined length, and a conductive member along the circumferential surface of the magnetic body core 122 along the longitudinal direction of the magnetic core 122. A wireless power receiving antenna 121 wound multiple times to be wrapped may be included, and the wireless power receiving antenna 121 is a solenoid type wound multiple times along the longitudinal direction of the magnetic core 122 as described above. It can be an antenna.

In the present invention, the antenna for wireless power transmission 111 may be a flat coil in which a conductive member is wound a plurality of times with a predetermined number of turns, as shown in FIG. 1, or a circuit board 113 as shown in FIG. 2. ) May be an antenna pattern in which a conductive member such as copper foil is patterned on at least one surface. In addition, although the drawing shows that the antenna 111 for wireless power transmission is composed of one, the present invention is not limited thereto, and the antenna 111 for wireless power transmission may be composed of a plurality.

In addition, the number of turns of the conductive member wound along the longitudinal direction of the magnetic core 122 can be appropriately varied according to the desired transmission power, and the materials of the magnetic core 122 and the shielding sheet 112 are used. It can be changed according to the frequency.

Meanwhile, a material having a high magnetic permeability, a low magnetic permeability, and a high Q value may be used for the magnetic core 122 and/or the shielding sheet 112. In addition, a material having a high saturation magnetic flux density may be used for the magnetic core 122 and/or the shielding sheet 112.

As a specific example, the magnetic core 122 and/or the shielding sheet 112 may be formed of a magnetic material including at least one of Ni-Zn ferrite, Mn-Zn ferrite, polymer, and amorphous ribbon.

At this time, the shielding sheet 112 may be flaked to improve flexibility or suppress generation of eddy currents, and may be separated into a plurality of fine pieces. Further, the magnetic core 122 and/or the shielding sheet 112 may have a form in which a plate-shaped magnetic sheet having a predetermined area is stacked in multiple layers.

However, the material of the magnetic material is not limited thereto, and it is revealed that all known magnetic materials that can be used in wireless power transmission technology can be suitably used.

In the hybrid wireless power transmission system 100 and 200 according to an embodiment of the present invention described above, when the wireless power transmission modules 110 and 210 and the wireless power reception module 120 are aligned with each other, wireless power transmission may be performed.

In this case, when the wireless power transmission modules 110 and 210 and the wireless power receiving module 120 are aligned with each other, the wireless power receiving module 120 has an antenna for transmitting the wireless power at one end of the magnetic core 122. It may be disposed on one side of the wireless power transmission module (110,210) to be located on the side of the empty space (S) of 111).

More preferably, the wireless power receiving module 120 is the wireless power transmission module so that one end side of the magnetic core 122 is located in the central portion (O) side of the empty space portion of the antenna 111 for wireless power transmission ( 110,210).

Through this, the magnetic field emitted from the antenna 111 for wireless power transmission implemented as a flat antenna can be smoothly induced to the antenna 121 for wireless power reception implemented as a solenoid type antenna.

That is, in the flat antenna, a path of the main magnetic field may be formed on the side of the empty space formed in the center of the antenna, and in the solenoid-type antenna, a path of the main magnetic field may be formed at an end side of the magnetic core disposed inside the solenoid-type antenna. Can be.

Due to this, when the wireless power transmission modules 110 and 210 and the wireless power receiving module 120 are aligned with each other, one end side of the magnetic core 122 is an empty space portion S side of the antenna 111 for wireless power transmission. When disposed to be located at, the main magnetic field emitted from the antenna 111 for wireless power transmission, which is a flat antenna, may overlap with the direction of the main magnetic field of the antenna 121 for wireless power reception, which is a solenoid type antenna.

Accordingly, the main magnetic field emitted from the antenna 111 for wireless power transmission can be smoothly induced to the antenna 121 for wireless power reception.

In addition, when the antenna for wireless power transmission 111 is a flat antenna of a loop shape and the antenna for wireless power reception 121 is a solenoid type antenna, the magnetic core 122 is random with respect to the X axis or the Y axis. Even if it is arranged in an inclined state at an angle of, if one end of the magnetic core 122 is located in the empty space S of the antenna 111 for wireless power transmission, optimal wireless charging efficiency can be obtained.

In other words, as shown in FIG. 3, one end of the magnetic core 122 is not required to consider the angle between the longitudinal direction of the magnetic core 122 and the radial or width direction of the antenna 111 for wireless power transmission. When located in the empty space portion (S) of the wireless power transmission antenna 111 may be arranged in a state that can obtain the optimal wireless charging efficiency.

Through this, the hybrid wireless power transmission system 100,200 according to an embodiment of the present invention may consider an angle formed by the longitudinal direction of the magnetic core 122 and the radial or width direction of the antenna 111 for wireless power transmission. It is possible to increase the degree of freedom of charging by implementing the optimum charging efficiency without need.

In addition, in the hybrid wireless power transmission system 100 and 200 according to an embodiment of the present invention, the wireless power transmission through the antenna 111 for wireless power transmission is achieved by implementing the wireless power transmission antenna 111 as a flat antenna. It can be done in a large area. Accordingly, the wireless power transmission antenna 111 may be capable of transmitting a large capacity of kW.

In addition, the hybrid wireless power transmission system 100,200 according to an embodiment of the present invention is composed of a flat antenna having a large area for the antenna 111 for wireless power transmission, thereby increasing heat dissipation performance to increase charging efficiency or charging time. Can be shortened.

Meanwhile, the above-described hybrid wireless power transmission systems 100 and 200 may constitute a charging system for charging the battery 315 embedded in the unmanned flying device 310 such as a known drone.

That is, the wireless power transmission system 300,400 for an unmanned aerial vehicle according to an embodiment of the present invention may include an unmanned aerial vehicle 310 and a station 320,420 as illustrated in FIGS. 4 and 6.

At this time, a wireless power receiving module 120 for receiving wireless power may be built in the unmanned flying device 310 side, and a wireless power transmitting module 110 for transmitting wireless power may be provided at the stations 320 and 420, respectively. It can be built.

Accordingly, the battery 315 embedded in the unmanned aerial vehicle 310 may be wirelessly charged using the power provided by the stations 320 and 420.

In this embodiment, the wireless power transmission module 110 may generate a magnetic field using the power supplied through the power supply source 327 and transmit power in a wireless manner together with the magnetic field, and the wireless power reception module ( 120) may generate the induced electromotive force by receiving the power transmitted from the wireless power transmission module 110. Accordingly, the wireless power receiving module 120 may produce power for charging the battery 315 embedded in the unmanned flying device 310 through the induced electromotive force.

At this time, the wireless power transmission module 110 and the wireless power receiving module 120 is a wireless power transmission module and a wireless power receiving module constituting the above-described complex wireless power transmission system (100,200) shown in Figures 1 and 2 This can be applied as is. In addition, since the configuration and operation relationship of the wireless power transmission module 110 and the wireless power reception module 120 are the same as the above, detailed description will be omitted.

In addition, the power supply source 327 may be commercial power supplied through a power line, or may be a separate battery built into the stations 320 and 420. The power supply source 327 may be controlled through the control module 326 embedded in the stations 320 and 420 to supply power to the wireless power transmission module 110 or cut off the power supply.

In the present invention, the unmanned aerial vehicle 310 may be a helicopter or quadcopter type drone capable of vertical descent and vertical ascent.

For example, the unmanned aerial vehicle 310 may include a body portion 311, a power generating portion 312, and a landing gear 313 as shown in FIGS. 4 and 6.

The body 311 may be mounted with various electronic units suitable for the purpose of use, and a battery 315 for driving various electronic units may be built in. The shape of the body portion 311 may be appropriately changed, and various known shapes may be applied.

Here, the battery 315 may be a prismatic battery or a known flexible battery. In addition, although the drawing shows that the battery 315 is embedded in the body portion 311, the position of the battery 315 is not limited thereto, and it is revealed that the battery 315 may be appropriately changed according to design conditions.

The power generating part 312 may be connected to the body part 311 and may generate power for flying the body part 311 when power is supplied. For example, the power generator 312 may be a method in which a propeller rotates through driving of a motor. The power generation unit 312 may be one, but may be provided in plural to allow free direction change, and overall driving may be controlled through a control unit (not shown) built in the body unit 311. .

Accordingly, when the motor is driven through the control unit, the unmanned flying device 310 can be floated into the air by generating lift or propulsion while the propeller is rotated, and when the power generating unit 312 is provided in plural, respectively The flight direction may be changed according to the output difference of the power generation units 312 of.

Here, the control unit built in the body portion 311 can control the overall operation and driving of the unmanned flying device (310). Further, the control unit may be in the form of a chipset mounted on a circuit board (not shown). In one example, the control unit may be a microprocessor.

The landing gear 313 may be a structure for supporting the weight of the body portion 311 when the unmanned flying device 310 takes off and lands or is moored at the stations 320 and 420. The landing gear 313 may include a plurality of leg portions 313a extending from the body portion 311 and a connecting portion 313b connecting a lower end side of the leg portion. The landing gear 313 may be provided as one or a plurality of spaced apart spaced apart.

In addition, the unmanned aerial vehicle 310 may include at least one camera unit 314 for capturing an image of the ground or surroundings, and collects various information about the state and surrounding environment of the unmanned aerial vehicle 310 Or it may include various sensors (not shown) for sensing.

Here, the sensors may be various known sensors such as a gyro sensor, a geomagnetic sensor, a gravity sensor, an altitude sensor, a tilt sensor, a humidity sensor, a wind sensor, an air flow sensor, a temperature sensor, an acoustic sensor, and an illuminance sensor. , The sensors may be appropriately installed according to the purpose of use of the unmanned flying device 310. The camera unit 314 and sensors may be controlled through the control unit.

In addition, the control unit may further include a communication module for transmitting and receiving data, such as flight information of the unmanned flight apparatus 310, or a control command transmitted from the outside, to transmit an image captured by the camera unit 314. have.

However, the unmanned aerial vehicle 310 is not limited to the above-described structure, and various electronic equipment applied to a known unmanned aerial vehicle may be additionally mounted, and the unmanned aerial vehicle 310 is known according to the purpose of use. Various units that can be applied to the unmanned aerial vehicle may be additionally mounted. In addition, the unmanned aerial vehicle 310 may be used for various purposes such as leisure, surveillance, industrial, and information collection, and at least one wing for generating lift may be fixedly coupled to a streamlined body. have.

At this time, in the wireless power transmission system 300 for an unmanned flying device according to an embodiment of the present invention, the wireless power receiving module 120 may be built in the landing gear 313 side of the unmanned flying device 310. The wireless power receiving module 120 may be driven through a control unit included in the body portion 311, and may be electrically connected to a battery 315 built in the body portion 311. Accordingly, power produced through the wireless power receiving module 120 may be supplied to the battery 315, and the battery 315 may be recharged using the power supplied from the wireless power receiving module 120. Can be.

Here, the wireless power receiving module 120 embedded in the landing gear 313 may be one or a plurality. In addition, when a plurality of wireless power receiving modules 120 are built in the landing gear 313 side, they may be built in the same landing gear side, but the unmanned flight device 310 does not bias to one side and achieves balance. Equal number of wireless power receiving modules 120 may be built in to each side on the basis of the center of gravity of the unmanned flying device 310 to enable each.

For example, as illustrated in FIG. 6, when the unmanned aerial vehicle 310 includes two landing gears 313 spaced apart from each other, the wireless power receiving module 120 may include the two landings. Each may be embedded in the gear 313 side.

Meanwhile, as described above, when a plurality of wireless power reception modules 120 are built in the landing gear 313 side, a plurality of wireless power transmission modules 110 may also be built in the station 420 side. Here, the total number of the wireless power transmission module 110 and the total number of the wireless power reception module 120 may be the same number. Accordingly, the wireless power transmission module 110 and the wireless power reception module 120 may be matched one-to-one with each other.

At this time, the wireless power receiving module 120 embedded in the landing gear 313 side has a bar-shaped magnetic body core 122 having a predetermined length, and a conductive member along the longitudinal direction of the magnetic body core 122. A wireless power receiving antenna 121 may be wound a plurality of times so as to surround the circumferential surface of the magnetic core 122, and the wireless power receiving antenna 121 may be provided along a longitudinal direction of the magnetic core 122. It may be a solenoid-type antenna wound once.

In addition, in the wireless power receiving module 120, when the unmanned flying device 310 lands on one surface of the stations 320 and 420, one surface of the magnetic core 122 is parallel to one surface of the stations 320 and 420. The landing gear 313 may be embedded in the connection portion 313b side as much as possible.

In this case, the wireless power transmission module 110 may be embedded in the stations 320 and 420 so as to be disposed on a plane parallel to one surface of the stations 320 and 420.

Accordingly, the unmanned aerial vehicle 310 is in a landed or standby state on one surface of the stations 320 and 420, and the wireless power receiving module 120 and the wireless power transmitting module 110 are aligned in the above-described embodiment. In the state, the wireless power receiving module 120 built in the landing gear 313 side can receive wireless power transmitted from the wireless power transmitting module 110 built in the stations 320 and 420. Due to this, the battery 315 embedded in the body portion 311 may be charged using the power produced by the wireless power receiving module 120.

Meanwhile, the wireless power transmission module 110 may be built in the stations 320 and 420 to be movable along the X-axis and Y-axis directions orthogonal to each other.

Accordingly, when the unmanned aerial vehicle 310 lands on one surface of the stations 320 and 420 through the landing gear 313, the wireless power transmission module 110 moves in the X-axis and/or Y-axis direction. The location may be changed to be aligned with the wireless power receiving module 120 embedded in the landing gear 313 through.

Through this, the end of the magnetic core 122 may be arranged to be located on the side of the empty space (S) of the antenna 111 for wireless power transmission.

Due to this, the wireless power transmission system 300,400 for an unmanned aerial vehicle according to an embodiment of the present invention can realize optimal charging efficiency with the wireless power receiving module 120 through the positional movement of the wireless power transmission module 110. By changing to the alignment state, the battery 315 embedded in the unmanned flying device 310 can always be charged with optimal charging efficiency.

In addition, the wireless power transmission system 300,400 for an unmanned aerial vehicle according to an embodiment of the present invention is such that the antenna 111 for wireless power transmission, which is a flat antenna, is disposed on a plane parallel to one surface of the stations 320 and 420. Built in the stations 320 and 420, the magnetic core 122 for winding the wireless power receiving antenna 121, which is a solenoid type antenna, is to be embedded in the landing gear 313 so as to be in parallel with one surface of the stations 320 and 420. Can be.

Accordingly, in the wireless power transmission system 300,400 for an unmanned aerial vehicle according to an embodiment of the present invention, when the unmanned aerial vehicle 310 lands on the station 320,420, the antenna for wireless power transmission 111 is the magnetic material It is possible to maintain a state that is always parallel to one surface of the core 122.

Due to this, the position of the wireless power transmission module 110 even if the unmanned flying device 310 lands on the stations 320 and 420 while the magnetic core 122 is inclined at an arbitrary angle with respect to the X axis or the Y axis. Through movement, the position of one end of the magnetic core 122 can be easily changed into the empty space S of the antenna 111 for wireless power transmission.

In other words, even if the landing gear 313 with the wireless power receiving module 120 embedded lands at an arbitrary position on one surface of the stations 320 and 420, the wireless power transmission is a longitudinal antenna of the magnetic core 122 and a flat antenna. Optimal wireless when the end portion of the magnetic core 122 is changed to be located in the empty space portion S of the wireless power transmission antenna 111 without having to consider the angle formed by the radial or width direction of the credit antenna 111 It can be arranged in a state that can obtain the charging efficiency.

Through this, the wireless power transmission system 300,400 for an unmanned aerial vehicle according to an embodiment of the present invention can increase the degree of freedom of charging.

In addition, in the wireless power transmission system 300,400 for an unmanned aerial vehicle according to an embodiment of the present invention, the wireless power transmission antenna 111 is implemented as a flat-type antenna, thereby transmitting wireless power through the wireless power transmission antenna 111. This can be done in a large area. Accordingly, the wireless power transmission antenna 111 may be capable of transmitting a large capacity of kW. In addition, the wireless power transmission antenna 111 is composed of a flat-panel antenna having a large area, thereby improving heat dissipation performance to increase charging efficiency or shorten charging time.

In addition, in the wireless power transmission system 300,400 for an unmanned aerial vehicle according to an embodiment of the present invention, the wireless power transmission module 110 built in the landing gear 313 is configured in a solenoid form, so that the size of the landing gear 313 Even if it is not changed, it can be easily embedded. Because of this, it is possible to prevent the size of the landing gear 313 from being increased in the process of applying the wireless power transmission module 110, thereby preventing the increase in air resistance due to the increase in size.

Meanwhile, an example of stations 320 and 420 for moving the wireless power transmission module 110 in the X-axis and/or Y-axis directions orthogonal to each other is illustrated in FIGS. 4 to 7.

That is, the stations 320 and 420 are configured to drive the housing 321 and the movable members 322 and 323 and the movable members 322 and 323 that are embedded in the housing 321 so as to be movable along the X-axis and Y-axis directions. Control module 326 may be included.

At this time, the wireless power transmission module 110 may be fixed to the movable member 323 side. Accordingly, when the movable member 323 is moved by the control module 326, the position of the wireless power transmission module 110 may be changed together with the movable member 323.

Here, the housing 321 may be formed such that at least one surface has a horizontal surface having a predetermined area so that the unmanned aerial vehicle 310 can land, and some or all of the surface may be embedded in the ground or the horizontal surface It may be in a form fixed to other structures to be exposed to the outside.

Meanwhile, the movable members 322 and 323 may include a first slider 322 that reciprocates along the X axis and a second slider 323 that reciprocates along the Y axis direction, and the first slider 322 and Any one of the second sliders 323 may be reciprocally coupled in a direction perpendicular to the other direction of movement. At this time, the wireless power transmission module 110 may be selectively fixed to any one of the first slider 322 and the second slider 323.

The first slider 322 and the second slider 323 may be reciprocated by driving the motors M1 and M2 controlled by the control module 326. Here, a method in which driving forces generated by the motors M1 and M2 are transmitted to the first slider 322 and the second slider 323 can be applied to various known methods such as a pulley method, a screw method, and a gear method. have.

As a specific example, the first slider 322 reciprocates along the first guide 324 disposed in a direction parallel to the X axis with respect to the bottom surface of the housing 321 through driving of the first motor M1. It can be arranged to be movable.

In addition, the second slider 323 is reciprocated by driving the second motor M2 along the second guide 325 disposed in a direction parallel to the Y axis relative to the first slider 322. It may be arranged, the wireless power transmission module 110 may be fixedly installed on the upper surface of the second slider (323).

Here, the overall operation of the first motor M1 and the second motor M2 can be controlled through the control module 326, and the wireless power transmission module 110 is also electrically connected to the control module 326. It can be connected to control the overall operation. In addition, the control module 326 may include a general circuit element for driving the wireless power transmission module 110.

Accordingly, when the unmanned aerial vehicle 310 lands on the stations 320 and 420, the positions of the first slider 322 and the second slider 323 may be changed through the control of the control module 326. . Due to this, one end of the magnetic core 122 of the wireless power receiving module 120 embedded in the landing gear 313 may be changed to be located in the empty space S of the antenna 111 for wireless power transmission. .

As an example, the second slider 323 alternately has a predetermined distance between the X-axis direction and the Y-axis direction through the driving of the control module 326 inside the housing 321 as shown in FIG. 5. As much as you can move. Through this, the wireless power transmission module 110 may be changed to a position aligned with the wireless power reception module 120 through position movement. Through this, the battery 315 embedded in the unmanned flying device 310 may be charged with optimal charging efficiency.

However, the movement path of the second slider 323 is not limited thereto, and it is revealed that it can be moved in various paths.

At this time, the second slider 323 or the wireless power transmission module 110 side may include a sensing unit (not shown) for detecting an alignment state with the magnetic core 122, the sensing unit is the control module 326 ).

Accordingly, the control module 326 aligns the wireless power transmission module 110 and the wireless power reception module 120 by adjusting the position of the second slider 323 based on information sensed through the sensing unit. It might be.

As a specific example, the sensing unit may be an infrared sensor for checking the end position of the magnetic core 122 through infrared rays, or a magnetic field sensor for sensing the magnitude of a magnetic field induced in the antenna 121 for wireless power reception. .

However, the sensing unit is not limited thereto, and any of various known sensors may be applied as long as it is a method to check the mutual position between the second slider 323 and one end of the magnetic core 122. In addition, although the position of the wireless power transmission module 110 is changed through the two sliders 322 and 323 through the control of the control module 326, the present invention is not limited thereto, and the position of the wireless power transmission module 110 is changed in the direction of two axes orthogonal to each other. It should be noted that any method of publicity that can be applied can be applied.

Meanwhile, the station 420 may further include a rotating member 328 rotatably coupled to the movable member as shown in FIGS. 6 and 7. For example, the rotating member 328 may be rotatably coupled to one surface of the second slider 323.

In this case, the wireless power receiving module 120 may be embedded in the two landing gears 313, which are spaced apart from each other in the unmanned flying device 310, as shown in FIG.

In addition, two wireless power transmission modules 110 may be fixed to the rotating member 328 so as to correspond to the wireless power reception modules 120 respectively embedded in the two landing gears 313.

Here, the two wireless power transmission modules 110 may be fixed to the upper surface of the rotating member 328 in a state spaced apart by the distance between the two landing gears 313.

Through this, the wireless power transmission module 110 fixed to the rotating member 328 side is X-axis and Y-axis through the movement of the first slider 322 and the second slider 323 by the control module 326 The position may be changed along the direction, and may be rotated around the Z axis through rotation of the rotating member 328. Due to this, the wireless power transmission module 110 fixed to the rotating member 328 may be capable of changing both the angle through rotation and the position movement through linear movement. Here, the rotating member 328 may be rotated through driving of the motor M3 controlled by the control module 326.

As a specific example, as in the above-described embodiment, the first slider 322 is a first guide disposed in a direction parallel to the X axis with respect to the bottom surface of the housing 321 through the driving of the first motor M1. It can be arranged to be reciprocated along the (324), the second slider 323 is the second along the second guide 325 disposed in a direction parallel to the Y axis with respect to the first slider (322) It may be arranged to be reciprocating through the drive of the motor (M2). In addition, the rotating member 328 may be rotated about the Z axis through the driving of the third motor M3 with respect to the second slider 323, and the wireless power transmission module 110 may include the rotating member ( 328) can be fixedly installed.

Here, the overall operation of the first motor M1, the second motor M2, and the third motor M3 may be controlled through the control module 326, and the wireless power transmission module 110 may also The overall operation can be controlled by being electrically connected to the control module 326. In addition, the control module 326 may include a general circuit element for driving the wireless power transmission module 110.

Accordingly, when the unmanned aerial vehicle 310 lands on the station 420, the positions of the first slider 322 and the second slider 323 are changed and rotated through the control of the control module 326. The member 328 can be rotated.

Through this, the wireless power receiving module 120 embedded in each of the two landing gears 313 has one end of the magnetic core 122 within the empty space S of the two antennas 111 for transmitting wireless power. It can be arranged to be located respectively. Through this, the battery 315 embedded in the unmanned flying device 310 may be charged with optimal charging efficiency.

In addition, in the present exemplary embodiment, wireless power transmission may be simultaneously performed while two wireless power transmission modules and wireless power reception modules are aligned with each other. Through this, the charging time of the battery 315 embedded in the unmanned flying device 310 may be shortened.

On the other hand, although not shown in the drawing, when a plurality of the wireless power transmission modules are provided, any one of the plurality of wireless power transmission modules may be fixed to be positioned on the central axis of rotation of the rotating member 328.

Through this, through the movement of the position of the first slider 322 and the second slider 323, the wireless power transmission module fixed on the central axis of rotation of the rotating member 328 and the landing gear 313 are built in When the rotation member 328 is rotated after aligning the position of any one of the wireless power receiving modules first, another wireless power transmission module and landing gear 313 fixed to a position deviating from the central axis of rotation of the rotating member 328 Other wireless power receiving modules built in can be easily arranged.

Meanwhile, in the drawing, the wireless power transmission module 110 applied to the wireless power transmission system 300 and 400 for an unmanned aerial vehicle is illustrated in the form shown in FIG. 1, but is not limited thereto, and the wireless power transmission module 210 shown in FIG. 2 ) Can be applied in the same way.

It is revealed that the above-described hybrid wireless power transmission system 100 and 200 can be applied to various electronic products in addition to an unmanned aerial vehicle. For example, it may be applied to household appliances including a TV, a robot cleaner, a laptop computer, and an electric vehicle. In addition, in the hybrid wireless power transmission system 100 and 200 according to the present invention, the wireless power transmission module 110 may be configured as a solenoid, and the wireless power receiving module 120 may be configured as a flat panel, unlike the above description. Reveals. In addition, although not shown in the drawings, it is revealed that both the wireless power transmission module and the wireless power reception module constituting the wireless power transmission system may be configured as a flat plate type or a solenoid type.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art to understand the spirit of the present invention may add elements within the scope of the same spirit. However, other embodiments may be easily proposed by changing, deleting, adding, or the like, but this will also be considered to be within the scope of the present invention.

100,200: Hybrid wireless power transmission system
110,210: wireless power transmission module 111: wireless power transmission antenna
112: shielding sheet 113: circuit board
120: wireless power receiving module 121: wireless power receiving antenna
122: magnetic core
300,400: Wireless power transmission system for unmanned aerial vehicle
310: unmanned flight system 313: landing gear
313a: leg portion 313b: connecting portion
320,420: Station 321: Housing
322: 1st slider 323: 2nd slider
324: first guide 325: second guide
326: control module 327: power supply
328: rotating member

Claims (14)

delete delete delete delete delete Unmanned flying device capable of vertical ascent and vertical ascent; And
A station for landing the unmanned flying device and charging the landed unmanned flying device by wireless power transmission;
It includes,
The unmanned aerial vehicle,
A battery and a body part vertically elevating through a plurality of power generating parts driven using the battery power; And
Includes a landing gear that connects a plurality of leg portions extending downward from the body portion and a lower end of the leg portion, and in which a wireless power receiving module for charging the battery is installed.
The station,
A housing on which an upper surface is formed so that the unmanned aerial vehicle may land;
A wireless power transmission module disposed in the housing to charge the battery by transmitting power supplied from a power supply to the wireless power receiving module;
A movable member that aligns the wireless power transmission module and the wireless power reception module when the unmanned aerial vehicle lands by moving the wireless power transmission module in a plane;
A sensing unit installed in the wireless power transmission module to detect an alignment state between the wireless power transmission module and the wireless power reception module; And
And a control unit for controlling the movable member such that the wireless power transmission module and the wireless power reception module are aligned using the information sensed by the sensing unit. The method of claim 6,
The wireless power receiving module includes a magnetic core having a predetermined length and a solenoid-type wireless power receiving antenna wound along the longitudinal direction so as to surround the circumferential surface of the magnetic core,
The wireless power transmission module, a wireless power transmission system for an unmanned aerial vehicle including a flat type wireless power transmission antenna having a conductive member wound in a loop shape and a shielding sheet disposed on one surface of the flat type wireless power transmission antenna. The method of claim 7,
The shielding sheet is a sheet-like sheet including at least one of ferrite, polymer, and amorphous ribbon. The method of claim 7,
The flat-panel wireless power transmission antenna is a wireless power transmission system for an unmanned aerial vehicle which is an antenna pattern or a flat coil formed in a loop shape on one surface of a circuit board. delete The method of claim 6,
The wireless power transmission module is a wireless power transmission system for an unmanned aerial vehicle fixed to one side of the movable member. The method of claim 6,
The wireless power receiving module is built in a landing gear that contacts the station when landing the unmanned aerial vehicle,
The wireless power transmission module includes the movable member such that one end side of the magnetic core included in the wireless power reception module is located in an empty space formed in a central area of the flat type wireless power receiving antenna included in the wireless power transmission module. A wireless power transmission system for an unmanned aerial vehicle that is moved through. The method of claim 6,
The station further includes a rotating member rotatably coupled to the movable member,
The wireless power receiving modules are respectively built in two landing gear sides spaced apart from each other,
The wireless power transmission module is a wireless power transmission system for an unmanned aerial vehicle provided in two spaced apart from each other on one surface of the rotating member. The method of claim 13,
The distance between the two wireless power transmission modules is a wireless power transmission system for an unmanned aerial vehicle having the same size as the distance between the two landing gears.

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