KR20220062942A - Cup-shaped magnetic resonance coil structure for wireless charging of devices - Google Patents

Abstract

The present invention relates to a cup-shaped wireless charging structure. The structure includes: a curved-type structure in which a side portion, in which a transmission coil with a magnetic resonant method for wirelessly supplying power can be laid, is formed in a cylinder shape; and at least one power transmission unit having the same central angle based on a central axis of the curved-type structure to be laid in the side portion. The power transmission unit forms an electromagnetic field for wireless power transmission in an inward direction of the curved-type structure by the transmission coil.

Description

Cup-shaped magnetic resonance coil structure for wireless charging of devices

The present invention relates to a cup-shaped wireless charging structure, and more particularly, a magnetic resonance type transmitting coil for wirelessly supplying power is formed on the outer peripheral surface of the cup-shaped structure, and the same central angle with respect to the central axis of the structure. It relates to a cup-shaped wireless charging structure that is arranged to have a power receiving unit receiving power to receive constant power from any direction.

In general, electronic devices including smartphones used around us can use the device by charging the battery, and as the industry develops, the power supply for charging the battery can be used in a wireless way.

A method of supplying power in a state in which a line for supplying power is not connected may largely include a magnetic induction method, a magnetic resonance method (magnetic resonance method), or an electromagnetic wave transmission method.

Until now, the magnetic induction method has been adopted as the method of wirelessly supplying power to most smartphone devices. However, the magnetic induction method has a short transmission distance that can supply power, so a transmitting coil for supplying power and a receiving coil for supplying power are used. Since it has to be used at a fairly close distance, the positional coherence between the transmitting coil and the receiving coil is very sensitive.

In addition, the electromagnetic wave transmission method is not suitable for use in daily life because the transmission efficiency of power is not high, and the harmfulness to the human body is greater than that of the magnetic induction method or the magnetic resonance method.

In order to solve this problem, research on a magnetic resonance type wireless charging structure continues, but there is a possibility that the efficiency of wirelessly supplying power may vary greatly depending on the shape of a resonance coil for supplying power.

On the other hand, as an example of a wireless charging device for a smart device, in Korean Patent Application Laid-Open No. 10-2016-0050445 'Wireless Charging Device', a first printing including a central region and a peripheral region in which a resonance coil pattern is formed around the central region A circuit board, a magnetic induction coil assembly, a second printed circuit board on which the magnetic induction coil assembly is coupled and disposed to overlap the central region, and the first and second printed circuit boards are electrically connected to each other, and the resonance coil pattern is not the magnetic A wireless charging device including a third printed circuit board on which a control module for controlling a wireless power signal to be transmitted by supplying power to an induction coil assembly is mounted is described.

However, as for the wireless charging device such as No. 10-2016-0050445 as described above, a device of a wireless charging method using a magnetic induction method of a magnetic induction coil assembly is disclosed, and other methods for a wireless charging device using a magnetic resonance method are disclosed. No means were described.

In addition, in Korea Patent No. 10-1522572 'Wireless charging battery device for mobile devices', one or more charging induction coils are inserted into the battery mounting groove formed on one side of the mobile device and generate induced power by a magnetic field supplied from the outside. ; a charging circuit board connected to the charging induction coil to control the generated induction power; a battery cell electrically connected to the charging circuit board; and a wireless charging battery device for a portable device including a portable device connection terminal electrically connected to the battery cell and connected to the portable device, but even in conventional patents such as No. 10-1522572, a magnetic resonance method is disclosed. No other means for wirelessly charging a smart device including a smart phone using

Therefore, in order to facilitate wireless charging of smart devices, it is necessary to develop a wireless charging structure in which a resonance coil structure is formed in which the efficiency of wirelessly supplying power is not reduced.

The present invention is proposed to solve the above problems, and three pairs of power transmitters formed along a curved surface of a cup-shaped columnar structure are arranged at regular intervals based on a central axis, and wireless power supply according to the position of the power receiver The purpose of providing a cup-shaped wireless charging structure is that it is formed so that there is no difference in the efficiency of There is this.

A cup-shaped wireless charging structure according to an embodiment of the present invention for solving the above problems includes: a curved structure in which a side portion is formed in a cylindrical shape; and an odd number of power transmitters formed to have the same central angle with respect to the central axis of the curved structure so as to be embedded in the side part, wherein the power transmitter includes a magnetic resonance method for wirelessly supplying power An electromagnetic field for wireless power transmission may be formed in the inner direction of the curved structure by the transmission coil.

In this case, the power transmitter includes a source coil embedded in the side portion in a rectangular structure surrounding the outer side of the transmitting coil to transmit power supplied from the outside to the transmitting coil; and the source coil is magnetic induction. In this way, power can be supplied to the transmission coil.

In this case, three pairs of the power transmitter including the transmission coil and the source coil as a pair may be provided and arranged on the side surface of the odd number of power transmitters.

In addition, the transmission coil may be arranged in a spiral structure on an inner portion of the source coil to be embedded in the side portion.

In addition, the cup-shaped wireless charging structure according to an embodiment of the present invention receives the power received from the receiving coil and the receiving coil for receiving the wireless power transmitted in the inner direction of the curved herbicide from the power transmitter to the outside It may further include; a power receiver including a load coil formed to supply.

At this time, the receiving coil receives power transmitted from the transmitting coil in a magnetic resonance manner, is formed in a rectangular spiral structure, and the load coil receives power from the receiving coil in a magnetic induction manner, and the receiving coil It may be formed in the shape of a rectangle surrounding the outside of.

In addition, the curved structure of the cup-shaped wireless charging structure according to an embodiment of the present invention includes a blocking portion formed as an outer portion of the side portion, and the blocking portion includes, wherein the electromagnetic field formed in the power transmission unit is the It is possible to block the electromagnetic field so as not to be emitted in the outward direction of the curved structure.

In addition, the curved structure includes an auxiliary transmitter embedded in the bottom surface to compensate for the electromagnetic field formed in the inward direction, and the auxiliary transmitter may be embedded in the bottom surface of the curved frame in a circular helical structure. can

In the cup-shaped wireless charging structure according to an embodiment of the present invention, a magnetic resonance coil for wirelessly supplying power is formed in a cup-shaped structure, and a power supply unit in which a source coil and a transmission coil are provided as a pair of the structure It is arranged to have the same central angle with respect to the central axis, and there is an advantage that constant power can be supplied without being affected by the position of the power receiving unit receiving power.

In addition, since the transmission coil of the power supply unit and the reception coil of the power reception unit are formed in a spiral structure, there is an effect of increasing the efficiency of wirelessly supplying power.

1 is a view showing the appearance of a cup-shaped wireless charging structure according to an embodiment of the present invention.
2 is a view showing the structure of the power transmitter of the cup-shaped wireless charging structure according to an embodiment of the present invention.
3 is a view showing a transmission coil and a source coil of the power transmitter of FIG. 2 from the front.
4 is a view showing a receiving coil and a load coil provided in the power receiving unit of the cup-shaped wireless charging structure according to an embodiment of the present invention.
FIG. 5 is a view showing a state in which the power receiver of FIG. 4 is formed in the power transmitter of FIG. 2 .
6 is a view showing a state in which a blocking portion is formed in the curved structure of the cup-shaped wireless charging structure according to an embodiment of the present invention.
7 is a view showing a state in which the auxiliary transmitter is formed on the bottom surface of the curved structure of the cup-shaped wireless charging structure according to an embodiment of the present invention.
8 is a graph showing power transmission efficiency according to the x-axis angle of the power receiver at a resonance frequency of 13.56 MHz for the cup-shaped wireless charging structure according to an embodiment of the present invention.
9 is a graph showing power transmission efficiency according to the z-axis angle of the power receiver at a resonance frequency of 13.56 MHz for the cup-shaped wireless charging structure according to an embodiment of the present invention.
10 is a graph showing power transmission efficiency according to a difference in distance between a power transmitter and a power receiver.
11 is a graph showing the results of measuring power transmission efficiency with a network analyzer when the x-axis angle of the power receiver is 60 degrees with respect to the cup-shaped wireless charging structure according to an embodiment of the present invention.
12 is a graph showing a result of measuring the power transmission efficiency when the z-axis angle of the power receiver is 300 degrees.
13 is a graph showing a result of measuring the power transmission efficiency when the distance difference between the power transmitter and the power receiver is 5 mm.

Hereinafter, the description of the present invention with reference to the drawings is not limited to specific embodiments, and various transformations may be applied and various embodiments may be provided. In addition, it should be understood that the contents described below include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention.

In the following description, terms such as 1st, 2nd, etc. are terms used to describe various components, meanings are not limited thereto, and are used only for the purpose of distinguishing one component from other components.

Like reference numbers used throughout this specification refer to like elements.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In addition, terms such as "comprises", "comprises" or "have" described below are intended to designate the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification. It should be construed as not precluding the possibility of addition or existence of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, a cup-shaped wireless charging structure according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 13 .

1 is a view showing the appearance of a cup-shaped wireless charging structure according to an embodiment of the present invention, Figure 2 is a view showing the structure of the power transmitter of the cup-shaped wireless charging structure according to an embodiment of the present invention, Fig. 3 is a view showing a transmitting coil and a source coil of the power transmitting unit of FIG. 2 from the front, and FIG. 4 is a view showing a receiving coil and a load coil provided in the power receiving unit of the cup-shaped wireless charging structure according to an embodiment of the present invention and FIG. 5 is a view showing a state in which the power receiver of FIG. 4 is formed in the power transmitter of FIG. 2 .

1 to 5 , the cup-shaped wireless charging structure 1 according to an embodiment of the present invention may include a curved structure 100 and a power transmitter 200 .

The curved structure 100 is provided in order to provide a structure in which the side part is formed in the shape of a cylinder and the power transmitter 200 can be embedded, and the side part has the same curvature based on the central axis of the curved structure 100 . It may be formed in the shape of a branch.

At this time, the curved structure 100 may be formed of a material that does not interfere with the flow of the electromagnetic field generated by the power transmitter 200 for wirelessly supplying power, and the structure between the power transmitters 200 is maintained at regular intervals. can make it happen

The power transmission unit 200 may be provided to supply power in a non-contact manner using power supplied from the outside, and may include a source coil 220 and a transmission coil 210 .

At this time, the power transmitting unit 200 is formed in a shape to be embedded in the side portion 110 of the curved structure 100 so that the source coil 220 and the transmitting coil 210 form a certain structure, and the power transmitting unit ( The shape in which the 200 is embedded in the side part 110 of the curved structure 100 may mean that it is disposed between the inner surface and the outer surface of the side part 110 .

In this case, the power transmitter 200 embedded in the side part 110 may be embedded in a form in which an odd number of power transmitters 200 form the same central angle with respect to the central axis of the curved structure 100 .

In addition, the power transmitter 200 according to the embodiment of the present invention may be embedded in the side part 110 of the curved structure 100 as described above, but the position where the power transmitter 200 is formed is not limited thereto. No, it may be formed in a form attached to the inner surface of the side part 110 or in a form attached to the outer surface.

That is, the curved structure 100 is supported to form a coil structure in which an odd number of power transmitters 200 are arranged at regular intervals while having the same central angle from one central axis, and the power transmitter 200 It may also be composed of another medium capable of maintaining the structure in which the transmission coil 210 and the source coil 220 are formed.

In this case, the power transmitter 200, which is preferably provided in odd number, may allow three pairs of power transmitters 200 including a transmission coil ( ) and a source coil ( ) to be embedded in the side part 110 .

That is, the cup-shaped wireless charging structure 1 according to an embodiment of the present invention is arranged such that an odd number of power transmitters 200 on the side surface 110 of the curved structure 100 have the same central angle with respect to the central axis. , Preferably, the three power transmitters 200 may be formed in a form in which they are arranged to have the same central angle, and may be formed so that the distance between the respective power transmitters 200 is not widened.

At this time, in the power transmitter 200 embedded in the curved structure 100 , the source coil 220 receiving power from the outside may transmit power to the transmitting coil 210 , and transmit power from the source coil 220 . The received transmission coil 210 may form an electromagnetic field for wireless power supply in the inner direction of the curved structure 100 , that is, in the direction of the central axis of the structure in which the power transmitter 200 is formed.

The source coil 220 may receive power by a power supply line or a power line connected to the outside, and the power supply line or power line is connected to the side part 110 of the curved structure 100 so as to be connected to the source coil 220 . may be connected to, but is not limited thereto, and a battery for storing power is provided on one side of the bottom surface or side part 110 of the curved structure 100 to supply power to the source coil 220 .

2 to 3 , in the power transmitter 200 according to an embodiment of the present invention, the source coil 220 is the transmitting coil with respect to the transmitting coil 210 embedded in the side portion 110 of the curved structure 100 . It may be formed in a shape surrounding the outer portion of the 210 .

At this time, as will be described later, one transmitting coil 210 may be formed in a rectangular spiral structure, and the source coil 220 is formed in a rectangular structure on the outer portion of the transmitting coil 210 , and the transmitting coil 210 . and may be arranged to maintain a constant distance.

The source coil 220 supplied with power from the outside may wirelessly transmit power to the transmission coil 210 , and the source coil 220 may supply power to the transmission coil 210 in a magnetic induction method.

At this time, the source coil 220 and the transmitting coil 210 can be kept at a distance within the range of 0.1 mm to 6 mm so that the wireless power supply by the magnetic induction method can be smoothly performed, but the source coil 220 The distance between the transmission coil 210 and the transmission coil 210 is not limited thereto, and may be arranged in various ways in the case of a distance capable of supplying power by a magnetic induction method.

2, the cup-shaped wireless charging structure 1 according to an embodiment of the present invention has a side portion ( 110) to form a cylindrical structure.

In more detail, the power transmitter 200 in which the transmitting coil 210 and the source coil 220 form a pair is formed to have a flat rectangular structure when viewed from the front, but a curved structure when viewed from the side ( 100) may be formed in a curved shape to form a constant curvature based on the central axis.

In other words, one power transmitter 200 may be formed in a shape having a straight line in the vertical direction and a constant curvature in the horizontal direction, and one or more power transmitters 200 are spaced apart from the central axis at the same interval. As much as possible, the same curvature can be formed when they are arranged side by side.

Preferably, the power transmitter 200 may be formed to have the same curvature as the curvature indicated by the side portion 110 of the curved structure 100 , and the side portion 110 of the curved structure 100 has three pairs of power The transmitter 200 may be embedded to have the same central angle.

At this time, each of the power transmitters 200 may be formed to have a certain distance from each other, but preferably, they are formed adjacent to each other so that an empty space does not occur in the structure formed by the power transmitter 200. there is.

That is, in the cup-shaped wireless charging structure 1 according to an embodiment of the present invention, the power transmission unit 200 in which the transmission coil 210 and the source coil 220 form a pair forms three sides based on one central axis. One structure may be formed so that the curvature of each power transmitter 200 is formed in a single cylindrical shape.

At this time, the size of the power transmitter 200 is not limited, and may vary depending on the size to be formed, and the structure may be formed larger by increasing the distance away from one central axis, or the structure may be made smaller by narrowing the spaced distance from one central axis. It is also possible to form

In addition, the shape of the cylinder may be formed elongated in the vertical direction by adjusting the size also in the vertical and horizontal directions.

2 to 3 , the transmission coil 210 of the cup-shaped wireless charging structure 1 according to an embodiment of the present invention may be embedded in the side portion 110 of the curved structure 100 in a spiral structure. there is.

At this time, the transmitting coil 210 may be formed in a rectangular spiral structure in a shape that is bent at right angles inside the rectangular structure in which the source coil 220 is formed, and the embedded transmitting coil 210 has a length according to the spacing between the spiral structures. can be set in various ways.

In addition, the transmission coil 210 may be formed in a rectangular spiral structure, but may also be formed in a circular spiral structure or may be formed in a helical structure.

4 to 5 , the cup-shaped wireless charging structure 1 according to an embodiment of the present invention may be configured to further include a power receiver 300 for receiving power from the power transmitter 200 . .

The power receiving unit 300 may be provided to receive power transmitted from the power transmitting unit 200 , and may include a receiving coil 310 and a load coil 320 .

The receiving coil 310 may be formed in a rectangular spiral structure, and the load coil 320 may be formed in a rectangular shape surrounding the outer portion of the receiving coil 310 formed in the rectangular spiral structure.

At this time, the power receiving unit 300 formed by the receiving coil 310 and the load coil 320 as a pair may be formed in a flat plate-like structure, unlike the power transmitting unit 200 .

The reception coil 310 may receive power wirelessly transmitted from the transmission coil 210 through a magnetic resonance method, and transmit the power received from the transmission coil 210 to the load coil 320 in a magnetic induction method. can be formed.

At this time, the receiving coil 310 and the load coil 320 may be formed to maintain an interval of 0.1 mm to 6 mm between each other so that the power supply by the magnetic induction method can be smoothly performed, but is not limited thereto. , may be formed in various ways within an interval range in which loss does not occur in the process of transmitting the power received from the transmission coil 210 to the load coil 320 .

In this case, the load coil 320 may be connected to a smart device or a rechargeable battery for using power to transmit the received power to the connected device.

That is, the power receiver 300 may be attached to or embedded in a device for using power, and the load coil 320 may be connected to an external device to supply power.

6 is a view showing a state in which a blocking portion is formed in the curved structure of the cup-shaped wireless charging structure according to an embodiment of the present invention.

Referring to FIG. 6 , the curved structure 100 of the cup-shaped wireless charging structure 1 according to an embodiment of the present invention may be formed to include a blocking part 111 as an outer surface of the side part 110 . .

The blocking part 111 may prevent the electromagnetic field generated from the power transmitter 200 embedded in the inner side of the side part 110 from being emitted toward the outer part of the curved structure 100 .

In this case, the blocking unit 111 may be formed of a material capable of shielding the electromagnetic field generated by the power transmission unit 200, and a metal material or carbon composite material capable of shielding the electromagnetic field may be used, or a nanocomposite material may be used. Thus, the blocking part 111 may be formed.

In addition, the blocking part 111 may be formed in the form of attaching a film to the outer surface of the curved structure 100 to prevent the electromagnetic field from being emitted.

For example, a film layer is formed using a metal, carbon material, or polymer nano material that can block electromagnetic fields, and a film of a form that can be attached to the outer surface of the side part 110 is provided and attached to the part that needs to be blocked. The electromagnetic field generated by the transmitter 200 may be prevented from being emitted to the outside.

At this time, the blocking part 111 may be formed in a shape that surrounds all the outer surfaces of the side part 110 of the curved structure 100 , that is, all surfaces exposed to the outside direction, and in more detail, the outside of the side part 110 . It may be formed in a form in which a film of one layer is formed laterally.

In addition, the blocking part 111 may be formed under the bottom surface of the curved structure 100 .

In other words, the blocking unit 111 is formed on all surfaces except the inner surface of the side portion 110 of the curved structure 100, so that the electromagnetic field generated from the transmission coil 210 of the power transmission unit 200 is formed on the curved structure ( 100) may be formed only in the inner direction.

7 is a view showing a state in which the auxiliary transmitter is formed on the bottom surface of the curved structure of the cup-shaped wireless charging structure according to an embodiment of the present invention.

Referring to FIG. 7 , the cup-shaped wireless charging structure 1 according to an embodiment of the present invention is a bottom surface of the curved structure 100 formed in a cylindrical shape, that is, a surface in contact with the ground. It may be formed to further include.

The auxiliary transmitting unit 400 may be configured to include an auxiliary transmitting coil 410 capable of wirelessly supplying power in a magnetic resonance method and an auxiliary source coil 420 transmitting power to the auxiliary transmitting coil 410, the power transmitting unit A method of receiving power from 200 and transmitting it wirelessly may work similarly.

However, the auxiliary transmitting unit 400 may be formed to be positioned on the bottom surface in the cup-shaped structure formed by the power transmitting unit 200, and the auxiliary transmitting coil 410 and the auxiliary source coil 420 are provided as a pair. The overall shape of the auxiliary transmission unit 400 may be formed in a circular plate-shaped structure.

At this time, the auxiliary transmitter 400 may be formed in a form to be embedded in the bottom surface of the curved structure 100, or may be formed to be attached to the inner surface of the bottom surface.

In this case, the auxiliary transmitter 400 may be formed in a circular plate-shaped structure, but may also be formed in a curved surface having a certain curvature depending on the shape in which the bottom surface of the curved structure 100 is formed.

8 is a graph showing simulation results of power transmission efficiency according to the x-axis angle of the power receiver at a resonance frequency of 13.56 MHz for a cup-shaped wireless charging structure according to an embodiment of the present invention, and FIG. 9 is an embodiment of the present invention It is a graph showing the simulation result of the power transmission efficiency according to the z-axis angle of the power receiver at the resonance frequency of 13.56 MHz for the cup-shaped wireless charging structure according to is a graph showing the simulation results of , and FIG. 11 is a graph showing the results of measuring power transmission efficiency with a network analyzer when the x-axis angle of the power receiver is 60 degrees with respect to the cup-shaped wireless charging structure according to an embodiment of the present invention 12 is a graph showing the result of measuring the power transmission efficiency when the z-axis angle of the power receiving unit is 300 degrees, and FIG. 13 is the power transmission efficiency when the distance difference between the power transmitting unit and the power receiving unit is 5 mm. This is a graph showing the results.

8 to 13 , the cup-shaped wireless charging structure 1 according to an embodiment of the present invention is the position or arrangement of the power receiving unit provided inside the structure of the power transmitting unit 200 formed in the shape of a cylinder. Therefore, it can be confirmed that the deviation of the power transmission efficiency of the power wirelessly supplied by the magnetic resonance method is not large.

Referring to FIG. 8 , as a result of performing a simulation according to the x-axis angle of the power receiving unit 300 with respect to the power transmission efficiency to which the power receiving unit 300 is supplied with power from the power transmitting unit 200 by the magnetic resonance method, x When the axial angle forms a range of 40 to 90 degrees, the power transmission efficiency is found to be 80% to 90%, and as a result of simulating the power transmission efficiency according to the z-axis angle of the power receiver 300, the z-axis angle It was confirmed that the power transmission efficiency of 80% or more appeared in the range of 0 to 330 degrees.

At this time, the state in which the x-axis of the power receiver 300 is 0 degrees means that the transmit coil 210 of the power receiver 300 and the receive coil 310 of the power transmitter 200 are aligned with each other, and the power receiver ( The state in which the z-axis of 300 is 0 degrees may indicate the directionality inside the structure in which the power receiver 300 is formed of the power transmitter 200 .

In addition, referring to FIG. 10 , as a result of simulations for power transmission efficiencies different from the distance at which the power receiving unit 300 is separated from the power transmitting unit 200 , the distance at which the power receiving unit 300 is separated from the power transmitting unit 200 is It was confirmed that power transmission efficiency of 85% to 95% appeared in the range of 5 mm or more and 45 mm or less, that is, in the range in which the simulation was performed.

Through the results of the power transmission efficiency according to the position and direction of the power receiver 300 of FIGS. 8 to 10 as described above, the power receiver 300 is formed of three pairs of power transmitters 200. Any alignment within the structure of the cylinder It was confirmed that the efficiency of wireless power supply was maintained even in the state.

In addition, as in FIGS. 11 to 13, when the power transmission efficiency was measured using a network analyzer by varying the alignment angle of the x-axis and the alignment angle of the z-axis, it was confirmed that the sensitivity at 13.56 MHz was the highest, and through this It was confirmed that there was no significant variation in power transmission efficiency depending on the arrangement state of the power receiver 300 .

Therefore, in the cup-shaped wireless charging structure 1 according to the embodiment of the present invention, the power transmission unit 200 in which the transmission coil 210 and the source coil 220 formed in a spiral structure form a pair is one central axis. As they are arranged to have the same central angle as a reference, the efficiency of wirelessly supplying power to the power receiver 300 formed inside can be constantly maintained.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can implement the present invention in other specific forms without changing the technical spirit or essential features of the present invention. you will be able to understand Accordingly, the embodiments described above are illustrative in all respects and not restrictive.

1: Wireless charging structure
100: curved structure
110: side part
111: blocking unit
200: power transmitter
210: transmission coil
220: source coil
300: power receiver
310: receiving coil
320: rod coil
400: auxiliary transmitter
410: auxiliary transmission coil
420: auxiliary source coil

Claims (8)

A curved structure in which the side portion is formed in the shape of a cylinder; and
Including; and an odd number of power transmitters that are formed to be embedded in the side part to have the same central angle with respect to the central axis of the curved structure.
The power transmitter,
Cup-shaped wireless charging structure, characterized in that forming an electromagnetic field for wireless power transmission in the inner direction of the curved structure by a magnetic resonance type transmission coil for wirelessly supplying power
According to claim 1,
The power transmitter,
A source coil having a rectangular structure surrounding the outer side of the transmitting coil and embedded in the side portion to transmit power supplied from the outside to the transmitting coil; and
The source coil is
Cup-shaped wireless charging structure, characterized in that for supplying power to the transmission coil in a magnetic induction method
3. The method of claim 2,
The power transmitter formed in the odd number,
Cup-shaped wireless charging structure, characterized in that three pairs of the power transmission unit in which the transmitting coil and the source coil are provided as a pair are arranged on the side portion
3. The method of claim 2,
The transmitting coil is
Cup-shaped wireless charging structure, characterized in that it is arranged in a spiral structure on the inner part of the source coil and is formed to be buried in the side part
According to claim 1,
Further comprising; Cup-shaped wireless charging structure, characterized in that
6. The method of claim 5,
The receiving coil is
Receives power transmitted from the transmission coil in a magnetic resonance method and is formed in a rectangular spiral structure,
The load coil is
A cup-shaped wireless charging structure, characterized in that it receives power from the receiving coil in a magnetic induction method, and is formed in a rectangular shape surrounding the outside of the receiving coil.
According to claim 1,
The curved structure,
Including; a blocking part formed as an outer part of the side part;
The blocking unit,
Wireless charging device, characterized in that the electromagnetic field formed in the power transmitter is blocked so as not to be emitted in the outer direction of the curved structure
According to claim 1,
The curved structure,
Auxiliary transmitter embedded in the bottom surface to supplement the electromagnetic field formed in the inward direction; includes;
The auxiliary transmitter,
Wireless charging device, characterized in that it is embedded in the bottom surface of the curved frame in a circular helical structure

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