Patent Publication Number: US-2021163135-A1

Title: Drone station

Description:
TECHNICAL FIELD 
     The present disclosure relates to a drone station, and more specifically, to a drone station which provides the taking-off and landing space of a drone to charge the drone. 
     BACKGROUND ART 
     With the development of a technology of a drone which is an unmanned aerial vehicle, the drone is used in various fields such as the security and the energy management using the drone. The drone is a kind of an aerial unit flying in the sky by rotating multiple propellers using the power of a battery. The drone is configured to fly in various patterns according to the operation of a remote controller of the user. 
     The drone requires the charging of the battery for the long-time flight due to a very high battery consumption. Therefore, a technology of installing a drone station to charge the battery of the drone, thereby enabling the long-time flight of the drone is being developed. 
     As an example, a drone station is installed on a smart street lamp, and the drone wirelessly charges a battery by moving to an adjacent drone station when an amount of the battery is reduced to a predetermined amount or less. 
     However, conventionally, since the drone is landed at the drone station using only the GPS information, there is a problem in that the center of resonance between the drone station and the drone is not accurately aligned, thereby reducing the charging efficiency, and increasing the charging time due to the reduction in the charging efficiency. 
     Further, conventionally, there is a problem in that the drone charged at the drone station is out of the charging position, or crashes at the drone station due to the external environmental factors such as the wind and the vibration. 
     DISCLOSURE 
     Technical Problem 
     The present disclosure is proposed to solve the above conventional problems, and an object of the present disclosure is to provide a drone station which allows the center of resonance of a drone to be always accurately aligned regardless of the initial landing position of the drone. 
     Further, another object of the present disclosure is to provide a drone station which may increase the degree of freedom of the charging between a wireless power transmission module and a wireless power reception module. 
     Technical Solution 
     To achieve the objects, a drone station according to an exemplary embodiment of the present disclosure includes: a landing guidance instrument and a wireless charging instrument formed on the landing guidance instrument, and for wirelessly transmitting a power to a drone positioned on a top, in which the landing guidance instrument is formed with an inclined surface moving a landed drone to the top of the wireless charging instrument. 
     The wireless charging instrument may be formed in a loop shape, and may include: a power transmission coil for wirelessly transmitting a power to the drone positioned on the top. 
     The drone station may further include: a guide member spaced apart from the power transmission coil, and for generating an electromagnetic force to fix the drone positioned on the top of the wireless charging instrument. At this time, the guide member is disposed on an outer circumference of the power transmission coil. 
     The landing guidance instrument is formed with an accommodation groove in which the wireless charging instrument is accommodated, and the inclined surface has a slope reduced from an outer circumference of the landing guidance instrument toward the accommodation groove. 
     The landing guidance instrument may further include: a vibration member for generating a vibration on a bottom of the inclined surface or a rolling member composed of a plurality of spheres disposed on the inclined surface. 
     The drone station may further include: a protective cover for covering the drone positioned on the wireless charging instrument, in which the protective cover may be changed to an opened state when the drone takes off and lands. 
     The protective cover includes: a rotary shaft, a first cover rotated by a rotation of the rotary shaft, and a second cover rotated by the rotation of the rotary shaft, and rotated in a direction opposite to the first cover. 
     The wireless charging instrument may include: a wireless power transmission module, and the wireless power transmission module may include: a wireless power transmission antenna for sending a power source in a wireless method, in which the wireless power transmission antenna may have a flat form around which a conductive member is wound in a loop shape. 
     The wireless charging instrument may further include: a control module and at least one operating member moved along a X-axis direction and a Y-axis direction perpendicular to each other through a control of the control module, and the wireless power transmission module may be fixed to one side of the operating member and a position of the wireless power transmission module may be changed by the movement of the operating member. 
     The wireless power transmission module may include: a shield sheet disposed on one surface of the wireless power transmission antenna, and the shield sheet may be a flat-shaped sheet including at least one of a ferrite, a polymer, and an amorphous ribbon. 
     The wireless power transmission antenna may be one of an antenna pattern patterned on one surface of a circuit board in a loop shape and a flat-shaped coil. 
     The drone may be embedded with a wireless power reception module for receiving the wireless power sent by the wireless power transmission module, and the wireless power reception module may include: a wireless power reception antenna composed of a coil wound in a longitudinal direction such that a conductive member surrounds a circumferential surface of a magnetic core having a pre-determined length. 
     When the wireless power reception module and the wireless power transmission module are aligned, one end of the magnetic core may be disposed to be positioned in a hollow portion formed in a central region of the wireless power transmission antenna. 
     The wireless power reception module may be embedded in a landing gear contacting the wireless charging instrument when the drone is landed, and the wireless power transmission module may be moved such that the end of the magnetic core is positioned within a hollow portion formed in a central region of the wireless power reception antenna through the movement of an operating member included in the wireless charging instrument. 
     The wireless power reception module may be embedded in each of two landing gears disposed to be spaced apart from each other at an interval, the wireless charging instrument may further include: a rotary member rotatably coupled to the operating member, and one surface of the rotary member has two wireless power transmission modules disposed to be spaced apart from each other at a predetermined interval. At this time, the distance between the two wireless power transmission modules is formed to have a same size as a distance between two landing gears. 
     Advantageous Effects 
     According to the present disclosure, the drone station may be formed with the inclined surface, thereby always moving the drone to the charging region even if the drone is landed in the non-charging region. 
     Further, the drone station may be formed with the inclined surface and the guide member, thereby always moving the drone to the position having the optimal charging efficiency even if the drone is landed in the non-charging region or at the position having the low charging efficiency. 
     Further, the drone station may be formed with the auxiliary member for assisting the movement of the drone along the inclined surface, thereby always moving the drone to the position having the optimal charging efficiency even if the inclined surface is smoothly formed. 
     Further, the drone station may move the drone to the position having the optimal charging efficiency through the inclined surface and the guide member, thereby minimizing the charging time of the drone to maximize the operating time of the drone. 
     Further, the drone station may include the guide member, thereby minimizing the movement of the drone due to the external environments when the drone is charged to prevent the drone from being separated from the charging region, or crashing at the drone station. 
     Further, the drone station may have the wireless power transmission antenna and the wireless power reception antenna configured in the flat type and the solenoid type, respectively, to rule out the influence of the angle upon the alignment for the wireless charging, thereby increasing the degree of freedom of the charging. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIG. 1  is a diagram for explaining a drone station according to an exemplary embodiment of the present disclosure. 
         FIG. 2  is a perspective diagram of the drone station according to the exemplary embodiment of the present disclosure. 
         FIG. 3  is a top diagram of the drone station according to the exemplary embodiment of the present disclosure. 
         FIG. 4  is a cross-sectional diagram of the cut-out surface of the drone station illustrated in  FIG. 3  taken along the line A-A′. 
         FIGS. 5 and 6  are diagrams for explaining a landing guidance instrument illustrated in  FIG. 2 . 
         FIGS. 7 to 11  are diagrams for explaining a wireless charging instrument illustrated in  FIG. 2 . 
         FIGS. 12 and 13  are diagrams for explaining a modified example of the drone station according to the exemplary embodiment of the present disclosure. 
         FIGS. 14 to 20  are diagrams for explaining the wireless charging instrument illustrated in  FIG. 2 . 
     
    
    
     MODE FOR INVENTION 
     Hereinafter, the most preferred exemplary embodiments of the present disclosure will be described with reference to the accompanying drawings in order to specifically describe the exemplary embodiments such that those skilled in the art to which the present disclosure pertains may easily implement the technical spirit of the present disclosure. First, in adding reference numerals to the components of each drawing, it should be noted that the same components have the same reference numerals as much as possible even if they are illustrated in different drawings. Further, in describing the present disclosure, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present disclosure, the detailed description thereof will be omitted. 
     Referring to  FIG. 1 , a drone station  100  wirelessly transmits (sends) the power to a drone  200  landed on the top. That is, the drone station  100  is installed on a street lamp, a vehicle, or the like to sense the drone  200  landed on the top and then wirelessly transmit the power to the drone  200 . 
     To this end, referring to  FIGS. 2 to 4 , the drone station  100  includes a landing guidance instrument  120  and a wireless charging instrument  140 . 
     The landing guidance instrument  120  is a flat-shaped instrument configuring the drone station  100 , and may be formed of the flat-shaped instrument having various shapes such as the circular shape and the rectangular shape. 
     The landing guidance instrument  120  is formed with an accommodation groove  122 . A wireless charging instrument  140  is accommodated in the accommodation groove  122 . The accommodation groove  122  is formed to have the shape corresponding to the shape of the wireless charging instrument  140 . As an example, the accommodation groove  122  is formed to include the center point of the landing guidance instrument  120 . 
     The landing guidance instrument  120  is formed with an inclined surface  124  for guiding the drone  200  to be landed at the position having the highest wireless charging efficiency. The inclined surface  124  has the slope reduced from the outer circumference of the landing guidance instrument  120  toward the accommodation groove  122 . The inclined surface  124  has the slope of a set angle (θ). 
     The drone  200  landed on the landing guidance instrument  120  moves to the top of the wireless charging instrument  140  positioned at the center of the landing guidance instrument  120  while sliding along the inclined surface  124 . At this time, when the inclined surface  124  has the steep slope, the drone  200  moving along the inclined surface  124  may fall down, such that the inclined surface  124  is formed to have the slope of the set angle (θ) within the range in which the drone  200  does not fall down. 
     As a result, the landing guidance instrument  120  moves the drone  200  landed on the top along the inclined surface  124  to guide the drone  200  to be positioned at the top of the wireless charging instrument  140 . 
     The landing guidance instrument  120  may include an auxiliary member for assisting the movement of the drone  200  along the inclined surface  124 . At this time, the inclined surface  124  may move the drone  200  to the wireless charging instrument  140  even when being formed to have a smoother slope than that of the landing guidance instrument  120  not including the auxiliary member. 
     Referring to  FIG. 5 , the landing guidance instrument  120  may include a vibration member  126  for generating the vibration. The vibration member  126  generates the vibration in the landing guidance instrument  120  to assist the movement of the drone  200 . The vibration member  126  generates the vibration in the landing guidance instrument  120  such that the drone  200  landed on the top of the landing guidance instrument  120  smoothly moves along the inclined surface  124 . The vibration member  126  is operated when the drone  200  is landed on the top of the landing guidance instrument  120 . When the vibration member  126  is operated, the vibration is generated in the landing guidance instrument  120 . The drone  200  slides and moves toward the wireless charging instrument  140  due to the vibration of the landing guidance instrument  120 . 
     Referring to  FIG. 6 , the landing guidance instrument  120  may include a rolling member  128  for assisting the movement of the drone  200  along the inclined surface  124 . As an example, the rolling member  128  includes a plurality of spheres disposed on the inclined surface  124  of the landing guidance instrument  120 . The rolling member  128  is rotated when the drone  200  is landed on the top of the landing guidance instrument  120  to move the drone  200  toward the landing guidance instrument  120 . 
     The landing guidance instrument  120  is applicable as long as it is the member capable of assisting the movement of the drone  200  along the inclined surface  124  other than the aforementioned vibration member  126  and rolling member  128 . 
     The wireless charging instrument  140  is the flat-shaped instrument for wirelessly charging the drone  200 , and may be formed of the flat-shaped instrument having various shapes such as the circular shape and the rectangular shape. The wireless charging instrument  140  is formed in the shape corresponding to the shape of the accommodation groove  122  formed in the landing guidance instrument  120 . 
     Referring to  FIG. 7 , the wireless charging instrument  140  includes a power transmission coil  142  for wirelessly charging the drone  200 . 
     The power transmission coil  142  is disposed on the upper surface of the wireless charging instrument  140 . The power transmission coil  142  wirelessly transmits the power to a power reception coil  110  of the drone  200  through the wireless power transmission (WPT) of a magnetic resonance method. The power transmission coil  142  may be disposed on the bottom surface of the wireless charging instrument  140 , or may also be disposed inside the wireless charging instrument  140 . 
     The power transmission coil  142  is formed in the loop shape around which a winding shaft is wound many times. As an example, the power transmission coil  142  is formed in parallel with the drone station  100  by being wound around winding the winding shaft perpendicular to the drone station  100  many times. 
     The power transmission coil  142  may also be configured in the solenoid form in which a wire is wound around a magnetic body. However, the power transmission coil  142  is preferably formed in the loop shape having a pre-determined area in order to secure the wireless charging region. Here, although not illustrated in  FIG. 7 , both ends of the power transmission coil  142  are connected to a power supply source (not illustrated). 
     Referring to  FIG. 8 , the power reception coil  110  disposed on the drone  200  is preferably configured in the solenoid form in which the wire is wound around the magnetic body. That is, by configuring the power transmission coil  142  having the loop shape and the power reception coil  110  having the solenoid form, it is possible to maximize the charging efficiency of the drone  200 . 
     Meanwhile, to enhance the charging efficiency of the drone  200 , it is necessary to align the center of resonance between the power transmission coil  142  and the power reception coil  110  of the drone  200 . 
     Referring to  FIG. 9 , the position of the coil having the maximum charging efficiency is changed according to the eccentric distance of the power transmission coil  142 . That is, as the eccentric distance of the power transmission coil  142  is increased, the position of the coil having the maximum charging efficiency is changed from an internal coil to an external coil. 
     Further, there exists the possibility in which the drone  200  is out of the charging position, or crashes at the drone station  100  due to the external environmental factors such as the wind and the vibration upon the wireless charging. 
     Therefore, referring to  FIGS. 10 and 11 , the wireless charging instrument  140  may further include a guide member  144  for aligning the power transmission coil  142  and the power reception coil  110  of the drone  200  and preventing them from being separated. 
     The guide member  144  is disposed on the outer circumference of the power transmission coil  142 . The guide member  144  is disposed to be spaced apart from the power transmission coil  142 . As an example, the guide member  144  is an electromagnet for generating an electromagnetic force to fix the drone  200 . 
     Here,  FIG. 11  illustrates that the guide member  144  having the circular shape is disposed on the upper surface of the wireless charging instrument  140 , but the present disclosure is not limited thereto, and the guide member  144  may be formed in various shapes such as the square and the parallel line. 
     Further, the guide member  144  may also generate the electromagnetic force only at a specific position for landing and fixing the drone  200  at the position having the optimal charging efficiency to fix the drone  200 . 
     As a result, the wireless charging instrument  140  may land the drone  200  at the position having the optimal wireless charging efficiency, and prevent the charging drone  200  from being separated from the charging position due to the external environmental factors. 
     Referring to  FIGS. 12 and 13 , the drone station  100  may further include a protective cover  160  for protecting the landed drone  200 . Here,  FIG. 12  illustrates that the protective cover  160  covers only the wireless charging instrument  140 , but the protective cover  160  may also cover the entire drone station  100 . 
     The protective cover  160  is formed in the hemispheric shape. The protective cover  160  normally maintains the closed state, and is changed to the opened state when the drone  200  takes off and is landed. The protective cover  160  normally maintains the closed state, and is changed to the opened state if the drone  200  is close to the drone station  100  for the landing, or the drone  200  takes off from the drone station  100 . 
     Here, it has been illustrated that the protective cover  160  is formed in the hemispheric shape in order to easily explain the protective cover  160 , but the shape of the protective cover  160  is not limited to the hemispheric shape, and applicable as long as it is the shape capable of protecting the drone  200  landed on the drone station  100 . 
     As an example, the protective cover  160  may be configured to include a rotary shaft  162  driven by a motor, and a first cover  164  and a second cover  166  rotated by the rotation of the rotary shaft  162 . The first cover  164  and the second cover  166  are rotated in different directions when the rotary shaft  162  is rotated by driving the motor. As the first cover  164  and the second cover  166  are rotated in different directions, the protective cover  160  is opened and closed. 
     The drone station  100  may further include a control circuit (not illustrated) for controlling the operation of the protective cover  160 . The control circuit determines the taking-off and landing of the drone  200  through the communication with the drone  200  or a drone control device, and opens the protective cover  160  when it is determined that the drone  200  takes off or is landed. 
     Referring to  FIGS. 14 and 15 , the wireless charging instrument  140  of the drone station  100  includes a wireless power transmission module  310 . At this time, the drone  200  includes a wireless power reception module  320  corresponding to the wireless power transmission module  310 . Here, the wireless power transmission module  310  corresponds to the aforementioned power transmission coil  142  of the wireless charging instrument, and the wireless power reception module  320  corresponds to the power reception coil  210  disposed on the drone  200 . 
     The wireless power transmission module  310  generates the magnetic field using the power source supplied by the power supply source and sends the power together with the magnetic field in the wireless method, and the wireless power reception module  320  receives the power sent from the wireless power transmission module  310  to generate an induced electromotive force to produce the power. 
     Here, the power supply source may also be a commercial power source supplied by a power source line, and may also be a known battery. 
     At this time, the wireless power transmission module  310  and the wireless power reception module  320  may have different forms of a wireless power transmission antenna  311  and a wireless power reception antenna  321  for transmitting or receiving the wireless power. 
     Specifically, the wireless power transmission module  310  may be configured in the flat shape in which the wireless power transmission antenna  311  for sending the wireless power is wound in the loop shape, and may have the form in which a shield sheet  312  is disposed on one surface of the wireless power transmission antenna  311 . 
     Further, the wireless power reception module  320  may have the solenoid form including a magnetic core  322  of a BAR shape having a predetermined length, and a coil around which a conductive member is wound in the longitudinal direction to surround the circumferential surface of the magnetic core  322 , in which the coil may serve as the wireless power reception antenna  321 . 
     Here, the wireless power transmission antenna  311  may also be a flat-shaped coil around which the conductive member is wound many times (see  FIG. 14 ), and may also be an antenna pattern on which the conductive member such as the copper foil is patterned on at least one surface of a circuit board  313  (see  FIG. 15 ). 
     Further, it has been illustrated in the drawings that one wireless power transmission antenna  311  is configured, but the present disclosure is not limited thereto, and it should be noted that a plurality of wireless power transmission antennas  311  may also be configured. 
     Further, the number of turns of the coil wound around the magnetic core  322  may be appropriately changed according to the target transmission power, and the materials of the magnetic core  322  and the shield sheet  312  may be appropriately changed according to the frequency used. 
     Meanwhile, the magnetic core  322  and/or the shield sheet  312  may use the material having the high permeability, the low permeability loss rate, and the high Q value, and use the material having the high saturation magnetic flux density. As a specific example, the magnetic core  322  and/or the shield sheet  312  may be formed of the magnetic body including at least fifteen kinds among an Ni—Zn ferrite, an Mn—Zn ferrite, a polymer, and an amorphous ribbon. 
     Further, the shield sheet  312  may also be flaked to improve the flexibility or suppress the generation of the eddy current and separately formed into a plurality of fine pieces. Further, the magnetic core  322  and/or the shield sheet  312  may also be in the form of being laminated in multiple layers. However, the material of the magnetic body is not limited thereto, and it should be noted that all known magnetic bodies which may be used in the wireless power transmission technology may be appropriately used. 
     As described above, in the drone station  100 , one end of the magnetic core  322  is disposed to be positioned in a hollow portion(S) of the wireless power transmission antenna  311  if the wireless power transmission module  310  and the wireless power reception module  320  are aligned with each other for the wireless power transmission, and more preferably, one end of the magnetic core  322  may be aligned to be positioned on a center portion (O) of the hollow portion of the wireless power transmission antenna  311 . 
     As a result, the magnetic field emitted from the wireless power transmission module  310  implemented in the flat form may be smoothly induced to the wireless power reception module  320  implemented in the solenoid form. 
     That is, if the wireless power antenna is configured in the flat form, the path of the main magnetic field may be formed in the hollow portion of the antenna, and if the wireless power antenna is configured in the solenoid form, the path of the main magnetic field may be formed on the end of the magnetic core  322 . 
     Therefore, if one end of the magnetic core  322  is disposed to be positioned in the hollow portion (S) of the wireless power transmission antenna  311 , the direction of the main magnetic field emitted from the wireless power transmission module  310  implemented in the flat form may coincide with the direction of the main magnetic field of the wireless power reception module  320  implemented in the solenoid form, such that the main magnetic field is smoothly induced to the wireless power reception antenna  321 . 
     Further, if the wireless power transmission antenna  311  included in the wireless power transmission module  310  is configured in the flat form having the loop shape and the wireless power reception module  320  is configured in the solenoid form, the optimal wireless charging efficiency may be obtained when the end of the magnetic core  322  is positioned within the hollow portion (S) of the wireless power transmission antenna  311  even if the magnetic core  322  is disposed in the state of being tilted at any angle with respect to the X-axis or the Y-axis. 
     That is, as illustrated in  FIG. 16 , when the end of the magnetic core  322  is positioned within the hollow portion (S) of the wireless power transmission antenna  311  without having to consider the angle formed between the longitudinal direction of the magnetic core  322  included in the wireless power reception module  320  and the radius direction or the width direction of the wireless power transmission antenna  311 , the end of the magnetic core  322  may be aligned in the state capable of obtaining the optimal wireless charging efficiency, thereby increasing the degree of freedom of the charging for implementing the optimal charging efficiency. 
     Further, the drone station  100  may implement the wireless power transmission through the wireless power transmission antenna  311  included in the wireless power transmission module  310  over the large area, thereby implementing the large capacity transmission of the kW level, and the wireless power transmission antenna  311  with the wider area may be formed, thereby enhancing the heat-dissipation performance to enhance the charging efficiency or shorten the charging time. 
     Meanwhile, the aforementioned drone station  100  may configure a charging system for charging a battery (not illustrated) embedded in the drone  200 . 
     Referring to  FIGS. 17 and 19 , the wireless power reception module  320  for receiving the wireless power may be embedded in the drone  200 , and the wireless power transmission module  310  for sending the wireless power may be embedded in the drone station  100 , respectively. 
     According to the present exemplary embodiment, the wireless power transmission module  310  generates the magnetic field using the power source supplied by a power supply source  417  and sends the power together with the magnetic field in the wireless method, and the wireless power reception module  320  receives the power sent by the wireless power transmission module  310  to generate the induced electromotive force to produce the power for charging the battery embedded in the drone  200 . 
     Here, the detailed description of the wireless power transmission module  310  and the wireless power reception module  320  will be omitted because the contents thereof are the same as the contents described with reference to  FIGS. 14 and 15 . 
     Further, the power supply source  417  may also be the commercial power source supplied by the power source line, and may also be a separate battery embedded in the drone station  100  itself, and the power source supplied from the power supply source  417  may be supplied or blocked toward the wireless power transmission module  310  by a control module  416  embedded in the drone station  100 . 
     According to the exemplary embodiment of the present disclosure, the drone  200  may be the drone of the helicopter or quadcopter method which may vertically move upward and vertically move downward. 
     That is, the drone  200  may include a body part  211 , a power generator  212 , and a landing gear  213 . 
     The body part  211  may be mounted with various electronic units according to the use purpose, and embedded with a battery  215  for driving various electronic units. The shape of the body part  211  may use various known shapes. 
     The power generator  212  may be connected to the body part  211  to generate the power for the flight of the body part  211 . As an example, the power generator  212  may have the form in which a propeller is rotated by driving a motor. One power generator  212  may also be provided, but a plurality of power generators  212  may be provided to enable the free change of direction, and the overall driving of the power generator  212  may be controlled by a controller (not illustrated) embedded in the body part  211 . 
     Therefore, when the motor is driven by the controller, the propeller is rotated to generate the lift or the thrust, such that the drone  200  may be levitated, and if the plurality of power generators  212  are provided, the flight direction may be changed according to the output difference between the respective power generators  212 . 
     Here, the controller embedded in the body part  211  may control the overall operation and driving of the drone  200 , and may be the form of a chipset mounted on a circuit board (not illustrated). As an example, the controller may be a microprocessor. 
     The landing gear  213  is a structure for supporting the weight of the body part  211  if the drone  200  takes off and is landed or moors at the drone station  100 . The landing gear  213  may have the form including a plurality of leg parts  213   a  extending from the body part  211  and a connection part  213   b  connecting the lower ends of the leg parts. One landing gear  213  may also be provided and a plurality of landing gears  213  may be disposed to be spaced apart from each other at an interval. 
     Further, the drone  200  may include at least one camera unit  214  for photographing the ground or the surrounding images. Further, the drone  200  may include various sensors (not illustrated) for collecting or sensing various information for the state of the drone  200  and the surrounding environments. As an example, as the sensors, various known sensors, such as the gyro sensor, the geomagnetic sensor, the gravity sensor, the altitude sensor, the slope sensor, the humidity sensor, the wind sensor, the air flow sensor, the temperature sensor, the acoustic sensor, and the illuminance sensor, may be appropriately installed. The camera unit  214  and the sensors may be controlled by the controller. 
     Further, the controller may further include a communication module for transmitting the image photographed by the camera unit or transmitting and receiving data such as the flight information of the drone  200  or a control instruction transmitted from the outside, and may be additionally mounted with various electronic equipment applied to the known drone. 
     However, the drone  200  applicable to the exemplary embodiment of the present disclosure is not limited to the aforementioned structure, and may also be additionally mounted with various units applicable to the known drone  200  according to the use purpose of the drone  200 . Further, the drone  200  may be used for various purposes for leisure, surveillance, industry, information collection, and the like, and may also have the form in which at least one wing for generating the lift is fixed and coupled to a streamlined fuselage. 
     At this time, the wireless power reception module  320  may be embedded in the landing gear  213  of the drone  200 , and the wireless power reception module  320  may be electrically connected to the battery  215  through the controller included in the body part  211 . 
     Here, one wireless power reception module  320  or a plurality of wireless power reception modules  320  may be embedded in the landing gear  213 . Further, when embedded in the landing gear  213 , the plurality of wireless power reception modules  320  may also be embedded in the same landing gear, but the same number of wireless power reception modules  320  may be embedded in each of both sides with respect to the center of gravity of the drone  200  to increase the weight balance of the drone  200 . As an example, as illustrated in  FIG. 19 , if the drone  200  includes two landing gears  213  disposed to be spaced apart from each other at an interval, the wireless power reception module  320  may be embedded in each of two landing gears  213 . Further, if the plurality of wireless power reception modules  320  are embedded in the landing gear  213 , a plurality of wireless power transmission modules  310  embedded in a station  820  may also be provided, and the wireless power transmission module  310  may also be provided to have a one-to-one correspondence with wireless power reception modules  320 . 
     Further, as described above, the wireless power reception module  320  may have the solenoid form including the coil around which the conductive member is wound in the longitudinal direction of the magnetic core having a predetermined length. 
     Further, the wireless power reception module  320  may be embedded in the connection part  213   b  of the landing gear  213  such that one surface of the magnetic core becomes the state of being parallel with one surface of the drone station  100  in the state where the drone  200  is landed on one surface of the drone station  100 , and the wireless power reception module  320  may be embedded in the drone station  100  to be disposed on the planar surface parallel with one surface of the drone station  100 . 
     Therefore, if the wireless power reception module  320  and the wireless power transmission module  310  are aligned with each other in the state of being landed on one surface of the drone state  100  or the stand-by state, the drone  200  receives the wireless power sent by the drone station  100  through the wireless power reception module  320 , such that the battery  215  embedded in the body part  211  may be charged to drive the drone  200 . 
     At this time, the wireless power transmission module  310  may be embedded in the drone station  100  to be movable in the X-axis and Y-axis directions perpendicular to each other. 
     Therefore, if the drone  200  is landed on one surface of the drone station  100  through the landing gear  213 , the wireless power transmission module  310  may be aligned such that the end of the magnetic core is positioned in the hollow portion (S) of the wireless power transmission antenna configured in the flat form through the position movement. 
     Therefore, the positions of the wireless power transmission module  310  and the wireless power reception module  320  are aligned, such that the battery  215  embedded in the drone  200  may be charged with the optimal charging efficiency. 
     Further, since the wireless power transmission antenna included in the wireless power transmission module  310  is embedded in the drone station  100  to be configured in the flat form having the loop shape and disposed on the planar surface parallel with one surface of the drone station  100  and the wireless power reception module  320  is embedded in the landing gear  213  to be configured in the solenoid form and become the state of being parallel with one surface of the drone station  100 , the wireless power transmission antenna of the wireless power transmission module  310  may maintain the state of being always parallel with one surface of the magnetic core included in the wireless power reception module  320  if the drone  200  is landed on the drone station  100 , and the end of the magnetic core may be easily positioned within the hollow portion (S) of the wireless power transmission antenna through the position movement of the wireless power transmission module  310  even if the magnetic core is disposed in the state of being tilted at any angle with respect to the X-axis or the Y-axis. 
     That is, when the end of the magnetic core is positioned within the hollow portion (S) of the wireless power transmission antenna without having to consider the angle formed between the longitudinal direction of the magnetic core included in the wireless power reception module  320  and the radius direction or the width direction of the wireless power transmission antenna even if the landing gear  213  in which the wireless power reception module  320  is embedded is disposed at any position of one surface of the drone station  100 , the end of the magnetic core may be aligned in the state capable of obtaining the optimal wireless charging efficiency. As a result, the drone station  100  according to the exemplary embodiment of the present disclosure may increase the degree of freedom of the charging. 
     Further, the wireless power transmission through the wireless power transmission antenna included in the wireless power transmission module  310  may be performed over the large area, thereby implementing the large capacity transmission of the kW level, and the wireless power transmission antenna may be formed on the wider area, thereby enhancing the heat-dissipation performance to enhance the charging efficiency or shorten the charging time. 
     Further, the wireless power transmission module  310  embedded in the landing gear  213  may be configured in the solenoid form to be easily embedded compared to the flat form even if the size of the landing gear  213  is not changed. Therefore, the size of the landing gear  213  may be prevented from being increased in the process of applying the wireless power transmission module  310 , thereby preventing the increase in the air resistance due to the increase in the size. 
     To this end, as illustrated in  FIGS. 17 to 20 , the drone station  100  may include a housing  411 , an operating member embedded in the housing  411  to be movable along the X-axis and the Y-axis, and a control module  416  for driving the operating member, and the wireless power transmission module  310  may be fixed to the operating member. As a result, the position of the wireless power transmission module  310  may be changed together with the operating member when the operating member is moved by the control module  416 . Here, the housing  411  may be formed to have the horizontal surface whose at least one surface has a predetermined area such that the drone  200  may be landed, and may also have the form of being embedded in the ground and also have the form of being fixed to other structures such that the horizontal surface is exposed to the outside. 
     Meanwhile, the operating member may be one of a first slider  412  reciprocally moved along the X-axis and a second slider  413  reciprocally moved along the Y-axis direction, one of the first slider  412  and the second slider  413  may be coupled to be reciprocally movable in the direction perpendicular to the movement direction of the other one, and the first slider  412  and the second slider  413  may be reciprocally moved by driving motors M 1 , M 2  controlled by the control module  416 . Here, as a method for delivering the driving forces generated by the motors M 1 , M 2  to the first slider  412  and the second slider  413 , all of various known methods such as the pulley method, the screw method, and the gear method may be used. 
     As a specific example, the first slider  412  may be disposed to be reciprocally movable along a first guide  414  disposed in the direction parallel with the X-axis with respect to the bottom surface of the housing  411  by driving a first motor M 1 , the second slider  413  may be disposed to be reciprocally movable along a second guide  415  disposed in the direction parallel with the Y-axis by driving a second motor M 2  with respect to the first slider  412 , and the wireless power transmission module  310  may be fixed to and installed on the upper surface of the second slider  413 . 
     Here, the overall operation of the first motor M 1  and the second motor M 2  may be controlled by the control module  416 , and the wireless power transmission module  310  may also be electrically connected to the control module  416  and the overall driving thereof may be controlled. Further, the control module  416  may include a general circuit element for driving the wireless power transmission module  310  or the like. 
     Therefore, if the drone  200  is landed on the drone station  100 , the positions of the first slider  412  and the second slider  413  may be changed by the control of the control module  416  and the end of the magnetic core of the wireless power reception module  320  embedded in the landing gear  213  may be disposed to be positioned within the hollow portion (S) of the wireless power transmission antenna, thereby implementing the optimal charging efficiency. 
     As an example, as illustrated in  FIG. 19 , the second slider  413  may alternately move the X-axis direction and the Y-axis direction by a predetermined distance by driving the control module  416  inside the housing  411 , thereby changing the position of the wireless power transmission module  310  to the position of being aligned with the wireless power reception module  320 . However, the movement path of the second slider  413  is not limited thereto, and it should be noted that the second slider  413  may be moved along various paths. 
     At this time, the second slider  413  or the wireless power transmission module  310  may include a sensing part (not illustrated) for sensing the alignment state with the magnetic core, and the sensing part may be controlled by the control module  416 . Therefore, the control module  416  may adjust the position of the second slider  413  based on the information sensed by the sensing part, thereby aligning the wireless power transmission module  310  and the wireless power reception module  320 . 
     As an example, the sensing part may also be an infrared sensor for confirming the position of the end of the magnetic core through the infrared rays and may also be a magnetic field sensor for sensing the magnitude of the magnetic field induced in the wireless power reception antenna. However, the sensing part is not limited thereto, and it should be noted that various known sensors are applicable as long as they are capable of confirming the mutual positions between the second slider  413  and the end of the magnetic core. Further, it has been described that the position of the wireless power transmission module  310  is changed by two sliders  412 ,  413  by the control of the control module  416  but the present disclosure is not limited thereto and it should be noted that all known methods capable of changing the position in the directions of two axes perpendicular to each other are applicable. 
     As another example, as in the aforementioned exemplary embodiment, the station  820  may include the housing  411 , the operating member embedded in the housing  411  to be movable along the X-axis and the Y-axis, and the control module  416  for driving the operating member, and include a rotary member  418  rotatably coupled to the operating member. Here, the wireless power reception module  320  may have the form of being embedded in each of two landing gears  213  disposed to be spaced apart from each other at an interval in the drone  200 . 
     At this time, two wireless power transmission modules  310  may be fixed to the rotary member  418 , and two wireless power transmission modules  310  may be fixed to the upper surface of the rotary member  418  in the state of being spaced apart from each other by the distance between two landing gears  213  in which each of two wireless power reception modules  320  is embedded. As a result, the position of the wireless power transmission module  310  fixed to the rotary member  418  may be changed along the X-axis and Y-axis directions through the movement of the operating member when the operating member is moved by the control module  416 , and the wireless power transmission module  310  is rotated around the Z-axis by rotating the rotary member  418 , thereby changing the angle. 
     As an example, the operating member may be one of the first slider  412  reciprocally moved along the X-axis and the second slider  413  reciprocally moved along the Y-axis direction, one of the first slider  412  and the second slider  413  may be coupled to be slidable in the direction perpendicular to the movement direction of the other one, and the rotary member  418  may be coupled to be rotatable around the Z-axis with respect to one of the first slider  412  and the second slider  413 . 
     Further, the first slider  412 , the second slider  413 , and the rotary member  418  may be reciprocally moved or rotated by driving the motors M 1 , M 2 , M 3  controlled by the control module  416 . Here, as the method for delivering the driving forces generated by the motors M 1 , M 2  to the first slider  412  and the second slider  413 , all of various known methods such as the pulley method, the screw method, and the gear method may be used. 
     As a specific example, the first slider  412  may be disposed to be reciprocally movable along the first guide  414  disposed in the direction parallel to the X-axis with respect to the bottom surface of the housing  411  by driving the first motor M 1 , and the second slider  413  may be disposed to be reciprocally movable along the second guide  415  disposed in the direction parallel to the Y-axis by driving the second motor M 2  with respect to the first slider  412 . Further, the rotary member  418  may be rotated around the Z-axis by driving a third motor M 3  with respect to the second slider  413 , and the wireless power transmission module  310  may be fixed to and installed on the upper surface of the rotary member  418 . 
     Here, the overall operation of the first motor M 1 , the second motor M 2 , and the third motor M 3  may be controlled by the control module  416 , and the wireless power transmission module  310  may also be electrically connected to the control module  416  and the overall driving thereof may be controlled. Further, the control module  416  may include a general circuit element for driving the wireless power transmission module  310  or the like. 
     Therefore, if the drone  200  is landed on the station  820 , the positions of the first slider  412  and the second slider  413  are changed by the control of the control module  416  and then the end of the magnetic core of the wireless power reception module  320  embedded in each of two landing gears  213  may be disposed to be positioned within the hollow portion (S) of two wireless power transmission antennas by rotating the rotary member  418 , thereby implementing the optimal charging efficiency. 
     Further, the wireless power transmission may be simultaneously implemented in the state where two wireless power transmission modules  310  and two wireless power reception modules  320  are aligned with each other, thereby shortening the charging time of the battery  215  embedded in the drone  200 . 
     Meanwhile, although not illustrated in the drawings, if the plurality of wireless power transmission modules  310  are provided, one of the plurality of wireless power transmission modules  310  may be fixed to be positioned on the rotational center axis of the rotary member  418 . As a result, when the position of one of the wireless power transmission module  310  fixed to the rotational center axis of the rotary member  418  and the wireless power reception module  320  embedded in the landing gear  213  is first aligned by the position movement of the first slider  412  and the second slider  413  in the method described in the aforementioned exemplary embodiment and then the rotary member  418  is rotated, the other wireless power transmission module  310  fixed to the position out of the rotational center axis of the rotary member  418  and the other wireless power reception module  320  embedded in the landing gear  213  may be easily aligned. 
     Meanwhile, it should be noted that the aforementioned drone station  100  is applicable to various electronic products other than the drone. As an example, the drone station  100  is also applicable to the appliances including the TV, the robot cleaner, and the like, the notebook PC, the electric vehicle, and the like. 
     Further, unlike the aforementioned description, it should be noted that the drone station  100  according to the exemplary embodiment of the present disclosure has the wireless power transmission module  310  configured in the solenoid form, and the wireless power reception module  320  embedded in the drone  200  may be formed in the flat form. 
     Further, although not illustrated in the drawings, it is noted that all of the wireless power transmission module  310  and the wireless power reception module  320  embedded in the drone station  100  and the drone  200  may also be configured in the flat form or configured in the solenoid form. 
     Although the preferred exemplary embodiments of the present disclosure have been described above, it is understood that the present disclosure may be modified in various forms, and those skilled in the art may practice various modified examples and changed examples without departing from the scope of the claims of the present disclosure.