KR101371058B1 - Coil assembly for power transmission, coil assembly for power receiving and wireless power transfer apparatus using electric resonance - Google Patents

Abstract

In accordance with one aspect of the present invention, there is provided a wireless power transmission / reception apparatus comprising: a transmission-side coil assembly including a transmission-side magnetic resonance coil and a power supply coil wound to surround all or part of one reference line having a ring shape; And a power receiver side coil assembly having a power receiver coil and a power receiver coil wound around the whole or part of another reference line having a ring shape. In the wireless power transmitter and receiver according to the present invention, since electric power is transmitted using electric resonance, an efficient power transmission is possible even if the separation distance between the power transmitting side coil and the power receiving side coil is large, and thus the resonance frequency can be lowered, so that the power transmitting coil There is an advantage that it is easy to tune the resonant frequency between the coil and the receiving coil.

Description

Coil assembly for power transmission, coil assembly for power receiving and wireless power transfer apparatus using electric resonance}

The present invention relates to a wireless power transceiver capable of transmitting power wirelessly, and more particularly, to a wireless power transceiver configured to transmit power using electrical resonance rather than using magnetic resonance.

With the advent of the ubiquitous era, the tendency of electronic devices to be mobile has been increasing, and the research on the method of supplying electric power wirelessly to electronic devices has been actively conducted. It uses a resonant structure such as inductive coupling, capacitive coupling, or antenna to supply power through space without physical contact between the power supply terminal and the supplied electronic device (receiver). Transmission).

The method of supplying wireless power mainly uses a magnetic coupling principle, which can be implemented through a simple coil structure, as shown in FIG. 1. That is, when the primary coil 1 corresponding to the power transmission stage and the secondary coil 2 corresponding to the power receiving stage are arranged in parallel and current is applied to the primary coil, due to mutual inductance (M), Induced current I2 is generated by the generated magnetic coupling, and electric power is supplied to the power receiving end by the induced current I2.

At this time, the magnitude of the induced current (I2) changes depending on the distance (O, misalignment) between the center of the primary coil 1 and the center of the secondary coil 2, the separation distance (d, separation) of both coils, According to the general principles of electromagnetism, these two distances get smaller as they get larger. This is because a magnetic field is formed around the primary coil 1 by the current I1 (sending current) applied from the power source to the primary coil 1, and the strength of the formed magnetic field decreases with distance. Therefore, according to Ampere'slaw or Biot-Savart's law, as the two distances increase, the strength of the magnetic field formed around the primary coil 1 decreases. The intensity of the magnetic field induced around the secondary coil 2 by mutual inductance from the magnetic field is also reduced, and the magnitude of the induced current I2 induced by the magnetic field induced around the secondary coil 2 is also reduced. .

Using such a wireless power transceiver, power transmission between the primary coil 1 and the secondary coil 2 can be performed even if the primary coil 1 and the secondary coil 2 are not interconnected. .

However, the wireless power transmission system as described above has a disadvantage in that commercialization is limited because power transmission is possible when the separation distance between the primary coil 1 and the secondary coil 2 is very narrow. On the other hand, in order to generate a larger magnetic field, the primary coil 1 and the secondary coil 2 are often manufactured as solenoid coils having an air-core, in which case the magnetic field is outside the solenoid region. Since it is also present in a lot of influence by the surrounding metal, there is a disadvantage that the power transmission efficiency is reduced accordingly.

In addition, in the solenoid coil structure for magnetic resonance, a high inductance value cannot be obtained, so that an additional capacitor may be installed, which leads to a decrease in the Q-factor, thereby lowering power transmission efficiency. In addition, when the solenoid type structure is used for the conventional magnetic resonance coupling, the magnetic resonance condition can be satisfied at several MHz units. The power of the relatively high frequency is very expensive and the resonance frequency is sensitive in the high frequency band. As a result, the tuning work for adjusting the resonant frequency becomes very difficult.

The present invention has been proposed to solve the above problems, and by using electrical resonance instead of magnetic resonance, it is possible to efficiently transmit power even if the separation distance between the transmitting side coil and the receiving side coil is large, and the resonance frequency The purpose of the present invention is to provide a wireless power transmitter and receiver which can facilitate resonant frequency tuning between a power transmitting side coil and a power receiving side coil, and a power transmitting side magnetic resonance coil and a power receiving side magnetic resonance coil included in the wireless power transceiver. have.

The wireless power transceiver according to the present invention for achieving the above object is provided with a power transmission coil and a transmission-side self-resonance coil wound around the whole or part of one reference line having a ring shape Transmission side coil assembly; And a power receiving side coil assembly having a power receiving side self-resonance coil and a load coil wound around the whole or part of another reference line having a ring shape.

The portion in which the transmission side magnetic resonance coil is wound and the portion in which the power coil is wound are arranged in succession, so that the transmission side coil assembly forms a ring shape, and the portion in which the receiving side magnetic resonance coil is wound and the load coil. This wound portion is arranged in succession, the power receiving side coil assembly is configured to form another ring shape.

The power coil is wound to surround a portion of the portion around which the transmission side magnetic resonance coil is wound, and the load coil is wound to surround a portion of the portion around which the power receiving side magnetic resonance coil is wound.

The power transmission side magnetic resonance coil, the power supply coil, the power reception side magnetic resonance coil, and the load coil are spirally wound to form a toroidal shape of the power transmission side coil assembly and the power reception side coil assembly.

One of a power transmission side ferrite core formed in a ring shape and wound around the outer circumferential surface of the power transmission side magnetic resonance coil and the power supply coil; and a power receiving side ferrite core formed in a ring shape and wound around the power receiving side magnetic resonance coil and the load coil. The above ferrite core is further provided.

The ferrite core is formed to form a circular ring shape.

The transmission-side magnetic resonance coil and the power receiving-side magnetic resonance coil are kept open in which both ends are not interconnected, or a variable capacitor is mounted between both ends.

The power transmitting side coil assembly and the power receiving side coil assembly are arranged in parallel with each other.

The power transmitting side coil assembly and the power receiving side coil assembly are arranged so that the central hollow space portions correspond to each other.

The power transmission side magnetic resonance coil and the power reception side magnetic resonance coil are set to have the same number of turns and the number of turns.

The transmission-side coil assembly according to the present invention is a transmission-side coil assembly included in a wireless power transceiver, the transmission-side self-resonance coil wound to surround all or part of one reference line having a ring shape and It is configured to include a power coil.

The power receiving side coil assembly according to the present invention is a power receiving side coil assembly included in a wireless power transceiver, the power receiving side self-resonance coil wound around the whole or part of another reference line having a ring shape and It is configured to include a load coil.

In the wireless power transmitter and receiver according to the present invention, since electric power is transmitted using electric resonance, an efficient power transmission is possible even if the separation distance between the power transmitting side coil and the power receiving side coil is large, and thus the resonance frequency can be lowered, so that the power transmitting coil There is an advantage that it is easy to tune the resonant frequency between the coil and the receiving coil.

1 is a schematic diagram of a conventional wireless power transceiver.
2 is a schematic diagram of a wireless power transceiver according to the present invention.
Figure 3 is a graph showing the power strength of the transmission side and the power reception side when operating the wireless power transceiver according to the present invention.
Figure 4 is a cutaway perspective view showing the configuration of the transmission-side coil assembly included in the wireless power transmission and reception apparatus according to the present invention.
5 is a graph illustrating transmission efficiency according to a separation distance between a power transmission side coil assembly and a power receiving side coil assembly.
6 is a schematic diagram of a second embodiment of a wireless power transceiver according to the present invention.
FIG. 7 is a graph showing the transmit power intensity and the receive power intensity when the second embodiment of the wireless power transceiver according to the present invention is operated.
8 is a schematic diagram of a third embodiment of a wireless power transceiver according to the present invention.
9 is a schematic diagram of a fourth embodiment of a wireless power transceiver according to the present invention.

Hereinafter, embodiments of a wireless power transceiver according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a schematic diagram of a wireless power transceiver according to the present invention, Figure 3 is a graph showing the power strength of the transmitting side and the receiving power when operating the wireless power transceiver according to the present invention, Figure 4 is a present invention Fig. 1 is a cutaway perspective view showing the configuration of a power transmission side coil assembly included in a wireless power transceiver according to the present invention.

The wireless power transceiver according to the present invention comprises a transmission side coil assembly 100 for receiving and transmitting current from the power supply unit 10 and a receiving side coil assembly for wirelessly receiving current from the power transmission side coil assembly 100. do. At this time, as the current flows to the receiving coil assembly as the current is applied to the transmission-side coil assembly 100, a magnetic field formed when a current flows in the coil is formed, that is, the magnetic resonance principle. Rather than using it, the greatest feature is that it uses the principle of generating an electric field as current flows, that is, the principle of electric resonance.

As described above, the power transmission side coil assembly 100 and the power receiving side coil assembly 200 are not manufactured in a solenoid type so as to transmit and receive power based on an electric resonance principle, as shown in FIG. 2. Is produced by. That is, the power transmission side coil assembly 100 includes a power transmission side ferrite core 130 having a ring shape and a power transmission side self-resonance coil 110 surrounding the power transmission side ferrite core 130. And a power coil 120. In addition, the power receiving side coil assembly 200 also includes a power receiving side ferrite core 230 having a ring shape, a power receiving side self-resonance coil 210 and a load surrounding the power receiving side ferrite core 230. It is configured to include a coil 220. At this time, the power coil 120 is connected to the power supply unit 10 for supplying a current to receive a current from the power supply unit 10, the load coil 220 consumes a current applied like a battery or home appliance It is configured to be connected to the electrical load 20. In addition, the power transmission side magnetic resonance coil 110 and the power receiving side magnetic resonance coil 210 are set to have the same resonance frequency, and both ends of the power transmission side magnetic resonance coil 110 and the power receiving side magnetic resonance coil 210 are shorted. When the resonance frequency disappears and electric resonance does not occur, both ends of the power transmission side magnetic resonance coil 110 and the power receiving side magnetic resonance coil 210 are not connected to the conductor as shown in the present embodiment. It is preferred to remain open.

When a current is applied from the power supply unit 10 to the power supply coil 120 and a magnetic field is formed in the power supply coil 120, the current is transmitted to the self-resonance coil 110 by the inductive coupling phenomenon. Will flow. At this time, the transmission side magnetic resonance coil 110 is wound in an annular shape to form a toroidal shape, that is, a magnetic field is formed along the reference line on which the transmission side magnetic resonance coil 110 is wound, that is, the transmission side ferrite core 130. When the magnetic field is formed along the transmission-side ferrite core 130, the electric field is formed in the direction (the arrow direction in FIG. 2) penetrating the empty space of the center of the transmission-side ferrite core 130. In addition, when an electric field is applied from the central empty space of the power transmission side ferrite core 130 to the central empty space side of the power receiving side ferrite core 230, a magnetic field is formed along the power receiving side ferrite core 230, and the power receiving side ferrite core ( Current flows through the self-resonance coil 210 by the magnetic field formed in the 230, and current is induced in the load coil 220 by an inductive coupling phenomenon, thereby causing the electric load 20 to be carried out. ) Is supplied to the side.

At this time, as shown in FIG. 3, the power strength of the receiving magnetic resonance coil increases at the point where the frequency of the transmitting magnetic resonance coil and the receiving magnetic resonance coil cause resonance, which is the frequency of the transmitting magnetic resonance coil. This means that the power transmission efficiency is increased when the frequency of the magnetic resonance coil of the receiver and the receiving side causes resonance. Therefore, the transmission-side magnetic resonance coil 110 and the power receiving-side magnetic resonance coil 210 should be set to match the resonance frequency. Of course, even if the shape and the number of windings of the transmission-side magnetic resonance coil 110 and the power receiving-side magnetic resonance coil 210 are different, but the resonance frequency can be set to match, so that the resonance frequency is easier to match The power transmission side magnetic resonance coil 110 and the power reception side magnetic resonance coil 210 may be set to have the same number of turns and the number of turns.

On the other hand, in order to generate the electric resonance as described above, the magnetic field of the closed-loop (closed-loop) type should be formed in the power transmission side coil assembly 100 and the power receiving side coil assembly 200, in the present embodiment The assembly 100 and the power receiving side coil assembly 200 form a toroidal shape, that is, the power transmitting side ferrite core 130 and the power receiving side ferrite core 230 are formed in a circular ring shape, and each of the coils is formed of a power transmitting side ferrite core ( 130 and the spiral wound around the outer circumferential surface of the power receiving side ferrite core 230, but the shape of the power transmission side coil assembly 100 and the power receiving side coil assembly 200 is not limited to the toroidal coil shape. No. For example, the power transmission side ferrite core 130 and the power receiving side ferrite core 230 may be formed in a polygonal ring shape such as a square ring, and each coil may be wound in a polygonal pattern. In addition, the transmission-side ferrite core 130 and the power-receiving side ferrite core 230 may be bent in a variety of polygonal shapes other than the ring shape if the center portion is empty so that the electric field can be formed. Of course, when the power transmission side coil assembly 100 and the power receiving side coil assembly 200 are manufactured in the form of a toroid, the power transmission efficiency is the best, and thus the power transmission side coil assembly 100 and the power receiving side coil assembly 200 are provided. ) Is preferably manufactured in the form of a toroid.

Hereinafter, the advantages obtained when the power transmission side coil assembly 100 and the power receiving side coil assembly 200 are manufactured in a toroidal shape will be described in detail with reference to FIG. 4 (representatively, the power transmission side coil assembly 100). .

)는 다음 [식 1]과 같이 주어진다. (도 3 참조)
Self inductance of the coil assembly 100 of the transmission side (self inductance,

) Is given by Equation 1 below. (See Fig. 3)

[Formula 1]

,

,

,

, 그리고

는 각각 송전측 코일조립체(100)의 외경, 송전측 코일조립체(100)의 내경, 진공에서의 투자율, 송전측 자기공진코일(110)을 감은 횟수, 그리고 송전측 페라이트코어(130)의 두께를 나타낸다.here,

,

,

,

, And

The outer diameter of the transmission-side coil assembly 100, the inner diameter of the transmission-side coil assembly 100, the permeability in the vacuum, the number of times of winding the transmission-side magnetic resonance coil 110, and the thickness of the transmission-side ferrite core 130 Indicates.

) 는 다음 [식 2]와 같이 주어진다.
At this time, the solenoid structure, which is a typical form of the open loop coil for magnetic resonance, can be regarded as a case where the toroid of such a ring shape is cut out and unfolded in the form of a rod, and the self inductance of the solenoid coil is

) Is given by Equation 2 below.

[Formula 2]

와

은 각각 솔레노이드의 단면적과 솔레노이드의 길이를 나타낸다. [식 1]에서 송전측 코일조립체(100)의 외경이 내경보다 상대적으로 큰 경우 높은 자체 인덕턴스 값을 가진다는 사실을 알 수 있으며, 일반적으로 토로이드는 솔레노이드 보다 높은 인덕턴스를 갖는다. 이러한 인덕턴스 값은 공진 주파수 (resonance frequency,

) 및 양호도 (quality factor,

) 와 밀접하게 연관되어 있으며, 관계식은 다음 [식 3]과 같이 주어진다.
here,

Wow

Denotes the cross-sectional area of the solenoid and the length of the solenoid, respectively. In Equation 1, when the outer diameter of the transmission-side coil assembly 100 is relatively larger than the inner diameter, it can be seen that it has a high self inductance value. In general, the toroid has a higher inductance than the solenoid. This inductance value is the resonance frequency,

) And quality factor,

) Are closely related to each other and the relation is given by the following [Equation 3].

[Formula 3]

는 공진 시 필요한 커패시턴스(capacitance)를 나타낸다.
here,

Denotes the capacitance required during resonance.

[Formula 4]

와

은 각각 구동 주파수와 코일의 직렬 등가저항을 나타낸다.here,

Wow

Are the drive frequency and the series equivalent resistance of the coil, respectively.

As can be seen from [Equation 3], the higher the inductance value can satisfy the resonance condition at a lower frequency, the lower the frequency, the easier the frequency tuning operation, the transmission side magnetic resonance coil (110) and the power receiving side magnetic resonance coil There is an advantage that it is possible to more easily match the resonance conditions of (210). In addition, as mentioned above, the transmission side magnetic resonance coil 110 and the power receiving side magnetic resonance coil 210 may be equipped with a variable capacitor (not shown) between both ends. . As such, when the variable capacitor is mounted between both ends of the power transmission-side magnetic resonance coil 110 and between both ends of the power receiver-side magnetic resonance coil 210, the capacitance C increases, so that the frequency is lowered. This has the advantage of being easier.

In addition, as can be seen in [Equation 4], the higher the inductance value has a higher degree of goodness, which is also a major advantage of the present invention.

5 is a graph illustrating transmission efficiency according to a separation distance between the power transmission side coil assembly 100 and the power receiving side coil assembly 200.

As the distance between the power transmitting side coil assembly 100 and the power receiving side coil assembly 200 is changed, the resonance frequency is changed by the interaction between the power transmitting side magnetic resonance coil 110 and the power receiving side magnetic resonance coil 210. When the transmission efficiency according to the distance is measured in the state where the frequency is fixed as one, as shown in the graph shown in FIG. 5, even if the distance becomes closer, the efficiency decreases.

Therefore, the separation distance between the power transmission side coil assembly 100 and the power receiving side coil assembly 200 should be appropriately set in consideration of various conditions.

6 is a schematic diagram of a second embodiment of a wireless power transceiver according to the present invention, and FIG. 7 is a graph showing the transmit power strength and the receive power strength when operating the second embodiment of the wireless power transceiver according to the present invention. to be.

In the above, when the power transmission side coil assembly 100 and the power receiving side coil assembly 200 are arranged in parallel to each other, more precisely, the central space of the power transmission side ferrite core 130 and the center of the power receiving side ferrite core 230 are more precise. Although only the case in which the empty spaces are arranged side by side to be described as an example, the structure of the transmission side coil assembly 100 and the power receiving side coil assembly 200 may be changed in various forms in addition to the structure shown in FIG. . For example, as illustrated in FIG. 6, the power transmission side coil assembly 100 and the power receiving side coil assembly 200 may be disposed to be perpendicular to each other.

The electric field generated in the transmission-side coil assembly 100 is not only propagated in a straight direction as shown in FIG. 2 but is bent and propagated to spread in all directions, as shown in FIG. 6. Even if the power receiving side coil assembly 200 is disposed at right angles, the electric field generated in the power transmitting side coil assembly 100 may be partially transmitted to the power receiving side coil assembly 200, thereby enabling power transmission. That is, the wireless power transmission and reception apparatus according to the present invention has the advantage that the power transmission is possible even if the arrangement between the power transmission side coil assembly 100 and the power receiving side coil assembly 200 is changed in various patterns, thereby increasing design freedom. .

Of course, when the power transmission side coil assembly 100 and the power receiving side coil assembly 200 are disposed at right angles as shown in FIG. 6, the power intensity flowing through the power receiving side magnetic resonance coil 210 as shown in FIG. 7. Since the peak is somewhat lowered, the power transmission efficiency is somewhat lower than that in the case where the power transmitting side coil assembly 100 and the power receiving side coil assembly 200 are arranged in parallel with each other. Therefore, considering only the power transmission efficiency, the power transmission side coil assembly 100 and the power receiving side coil assembly 200 are preferably arranged in parallel with each other, as shown in FIG. More preferred.

8 is a schematic diagram of a third embodiment of a wireless power transceiver according to the present invention.

The wireless power transmitter and receiver according to the present invention may be configured such that the power transmission side ferrite core 130 and the power reception side ferrite core 230 respectively provided on the power transmission side coil assembly 100 and the power receiving side coil assembly 200 are omitted. It may be.

That is, the transmission-side coil assembly 100 may be composed of only the transmission-side magnetic resonance coil 110 and the power coil 120 wound to surround one ring-shaped reference line (virtual reference line), as shown in FIG. . In addition, the power receiving side coil assembly 200 may also include a power receiving side magnetic resonance coil 210 and a power coil 120 wound to surround another reference line having a ring shape.

In this way, even if the power transmission side ferrite core 130 and power reception side ferrite core 230 are omitted, when the power transmission side magnetic resonance coil 110 and the power receiving side magnetic resonance coil 210 are wound to form a toroidal shape, The magnetic field generated when the current is induced in the resonant coil 110 and the power receiving side magnetic resonance coil 210 is a center line in which the power transmitting side magnetic resonance coil 110 and the power receiving side magnetic resonance coil 210 are wound. It is formed along a virtual baseline, which enables electric field generation and power transmission through it.

In this embodiment, only the case where both the power transmission side ferrite core 130 and the power receiving side ferrite core 230 are provided, or both the power transmission side ferrite core 130 and the power receiving side ferrite core 230 are not provided. However, the wireless power transceiver according to the present invention may be configured such that only one of the power transmission side ferrite core 130 and the power receiving side ferrite core 230 is provided. Of course, when the power transmission side ferrite core 130 and the power receiving side ferrite core 230 are provided, since a high inductance value can be obtained and the resonance frequency can be lowered accordingly, the power transmission side ferrite core 130 and the power receiving side ferrite It is preferable that all of the cores 230 are provided.

In addition, when the transmission-side ferrite core 130 is provided when the current is applied to the power supply coil 120 to generate a magnetic field, the transmission-side magnetic resonance coil 110 is spaced apart from the power supply coil 120 by a predetermined distance or more. Although the magnetic field is wound around the transmission point, the magnetic field is propagated to the transmission-side magnetic resonance coil 110 through the transmission-side ferrite core 130 to induce a current in the transmission-side magnetic resonance coil 110. However, when the transmission-side ferrite core 130 is omitted, as shown in FIG. 8, if the transmission-side magnetic resonance coil 110 is spaced far from the power coil 120, even if a current flows in the power coil 120 No current is induced in the magnetic resonance coil 110.

Therefore, when the transmission-side ferrite core 130 is omitted, as shown in FIG. 8, the portion on which the transmission-side magnetic resonance coil 110 is wound and the portion on which the power coil 120 is wound are arranged in succession to form one ring shape. It is preferably formed to achieve. Similarly, the site in which the power receiving side magnetic resonance coil 210 is wound and the area in which the load coil 220 is wound are also arranged in succession, and the power receiving side coil assembly 200 should be formed to form a single ring shape.

9 is a schematic diagram of a fourth embodiment of a wireless power transceiver according to the present invention.

In the transmission-side coil assembly 100 included in the wireless power transmission and reception apparatus according to the present invention, the transmission-side magnetic resonance coil 110 is wound in a toroidal shape as a whole, and the power supply coil 120 is the transmission-side magnetic resonance coil 110. ) May be wound so as to surround a portion of the wound area. As such, even when the power supply coil 120 is wound to surround a part of the power transmission side magnetic resonance coil 110, a current may be induced in the power transmission side magnetic resonance coil 110 when a current is applied to the power supply coil 120. .

Similarly, the power receiving side magnetic resonance coil 210 may also be wound in a toroidal shape, and the load coil 220 may be wound to surround a portion of the portion where the power receiving side magnetic resonance coil 210 is wound.

On the other hand, in the embodiment shown in Figures 2 to 9 shows only a wireless power transmission and reception device in which both the power transmission side coil assembly 100 and the power receiving side coil assembly 200 are manufactured in a toroidal form, the present invention is toro The transmission-side coil assembly 100 and the power-receiving coil assembly 200, which are manufactured in this month, are also claimed as rights. That is, the present invention, in the transmission side coil assembly for a wireless power transceiver comprising a power transmission side coil assembly 100 and the power receiving side coil assembly 200, surrounds all or part of one reference line having a ring shape. The power transmission side coil assembly 100 including the power transmission side self-resonance coil 110 and the power supply coil 120 is wound. In addition, the present invention, in the power receiving side coil assembly for a wireless power transceiver comprising a power transmission side coil assembly 100 and a power receiving side coil assembly 200, so as to surround all or part of another reference line having a ring shape. A power receiving side coil assembly 200 including a power receiving side self-resonance coil 210 and a load coil 220 is provided.

At this time, the power transmission side coil assembly 100 and the power receiving side coil assembly 200 according to the present invention, the power transmission side ferrite core 130 and the power receiving side ferrite core 230 as shown in Figures 2 to 6 Each may be additionally provided, and the power transmission side ferrite core 130 and the power reception side ferrite core 230 may be changed into various shapes as described with reference to FIGS. 2 to 9. The structure and effects thereof when the power transmission side ferrite core 130 and the power receiving side ferrite core 230 are additionally provided have been described above in detail, and thus a detailed description thereof will be omitted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention.

10: power supply unit 20: electric load
100: transmission side coil assembly 110: transmission side magnetic resonance coil
120: power coil 130: power transmission side ferrite core
200: power receiver coil assembly 210: power receiver magnetic resonance coil
220: load coil 230: water receiving side ferrite core

Claims (12)

A transmission-side coil assembly having a transmission-side self-resonance coil and a power supply coil wound to surround all or a portion of one reference line having a ring shape;
A power receiving side coil assembly having a power receiving side self-resonance coil and a load coil wound around the whole or part of another reference line having a ring shape;
Wireless power transceiver, characterized in that configured to include.
The method of claim 1,
A portion in which the transmission side magnetic resonance coil is wound and a portion in which the power coil is wound are arranged in succession, and the transmission side coil assembly forms a ring shape.
And a portion in which the power receiving side magnetic resonance coil is wound and a portion in which the load coil is wound are arranged in succession, so that the power receiving side coil assembly forms another ring shape.
The method of claim 1,
The power coil is wound so as to surround a part of the wound portion of the transmission side magnetic resonance coil,
The load coil is a wireless power transceiver, characterized in that wound around the portion of the receiving coil magnetic resonance coil wound.
The method of claim 1,
The power transmission side magnetic resonance coil, the power supply coil, the power reception side magnetic resonance coil and the load coil are wound in a spiral shape,
The power transmission side coil assembly and the power receiving side coil assembly is a wireless power transceiver, characterized in that to form a toroidal shape.
5. The method according to any one of claims 1 to 4,
One of a power transmission side ferrite core formed in a ring shape and wound around the outer circumferential surface of the power transmission side magnetic resonance coil and the power supply coil; and a power receiving side ferrite core formed in a ring shape and wound around the power receiving side magnetic resonance coil and the load coil. Wireless power transceiver, characterized in that the ferrite core is further provided.
6. The method of claim 5,
The ferrite core is a wireless power transceiver, characterized in that forming a circular ring shape.
5. The method according to any one of claims 1 to 4,
The power transmission side magnetic resonance coil and the power reception side magnetic resonance coil, each end of the wireless power transmission and reception device, characterized in that the open state is not connected to each other, or a variable capacitor is mounted between each end. .
5. The method according to any one of claims 1 to 4,
The power transmission side coil assembly and the power receiving side coil assembly is arranged in parallel with each other wireless power transmission and reception device.
9. The method of claim 8,
The power transmission side coil assembly and the power receiving side coil assembly, the wireless power transmission and reception device, characterized in that arranged so that the center portion of the empty space.
5. The method according to any one of claims 1 to 4,
The power transmission side magnetic resonance coil and the power receiving side magnetic resonance coil is a wireless power transceiver, characterized in that the same number of turns and the number of turns.
In the transmission side coil assembly for a wireless power transceiver comprising a power transmission side coil assembly and a power receiving side coil assembly,
A power transmission side coil assembly comprising a power transmission side self-resonance coil and a power supply coil wound to surround all or part of one reference line having a ring shape.
In the power receiving side coil assembly for a wireless power transceiver comprising a power transmission side coil assembly and a power receiving side coil assembly,
A power receiving side coil assembly comprising a power receiving side self-resonance coil and a load coil wound to surround all or part of another reference line having a ring shape.

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