KR20130134726A - Apparatus for wireless power transmission capable of magnetic field prevent diffusion - Google Patents
Apparatus for wireless power transmission capable of magnetic field prevent diffusion Download PDFInfo
- Publication number
- KR20130134726A KR20130134726A KR1020120058450A KR20120058450A KR20130134726A KR 20130134726 A KR20130134726 A KR 20130134726A KR 1020120058450 A KR1020120058450 A KR 1020120058450A KR 20120058450 A KR20120058450 A KR 20120058450A KR 20130134726 A KR20130134726 A KR 20130134726A
- Authority
- KR
- South Korea
- Prior art keywords
- wireless power
- magnetic field
- power transmission
- power signal
- coil
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
Abstract
The present invention discloses a wireless power transmission apparatus capable of preventing magnetic field diffusion. In accordance with one aspect of the present invention, there is provided a wireless power transmission apparatus capable of preventing magnetic field spreading, the wireless power transmission apparatus including: a power transmission antenna for transmitting a wireless power signal to the outside in a magnetic resonance method; A wireless power transmission station generating a wireless power signal when supplying commercial power, and supplying the generated wireless power signal to the power transmission antenna; And at least one magnetic field diffusion preventing coil unit disposed around a magnetic field direction of the wireless power signal transmitted from the power transmission antenna to suppress magnetic field diffusion of the wireless power signal.
Description
The present invention relates to a wireless power transmission system for transmitting power wirelessly to be used as a driving power source or a battery charging. The present invention relates to a wireless power transmission device capable of suppressing magnetic field diffusion that can be suppressed.
Portable electronic devices such as mobile communication terminals, PDAs, PMPs, laptops, and the like, are commonly used as rechargeable batteries (batteries) that can be recharged with a driving power source to increase user convenience. By using such a battery as a driving power source, the user can be free from a wired environment for power supply, which makes the product more convenient to use.
The battery stores energy by charging with an external power source. In order to charge such a battery, a separate wired charging device that supplies household commercial power with the available rated power required for the battery is mainly used.
In the wired charging method, a method in which a terminal of a charging device and a terminal of a battery are electrically connected by physically contacting each other is mainly used.
However, in the above-described method, since the electrical coupling is made in a manner in which the terminals are physically coupled to each other, physical wear may occur and connection reliability may be deteriorated. There is a problem that the contact state easily becomes poor. In addition, in an environment with high moisture and humidity, problems such as an electric short-circuit accident or a loss of charged energy may occur.
In order to solve the problem of the contact charging method is disclosed a contactless charging system in which the terminal of the charging device and the battery is physically contactless, the contactless charging is known as the magnetic flux of the magnetic field in the primary coil In this case, the charging method uses a phenomenon in which power is induced to the secondary coil by a magnetic field that changes with time in an adjacent secondary coil.
Conventional contactless charging method has a wireless pad with a built-in primary coil for induction electromotive force, by a method of seating a portable electronic device equipped with a secondary coil means corresponding to the primary coil on the wireless pad Was implemented.
However, the above-described method has a coil structure for generating induced electromotive force, the transmitting side and the receiving side of the power should be adjacent to a short distance of a few mm, and the direction between the transmitting side and the receiving side exists and is aligned. As a result, the efficiency of power transmission changes drastically, and heat generation is disadvantageous.
Recently, the wireless power by the magnetic resonance method that can transfer the power in the form of magnetic field energy by concentrating the energy at a specific resonance frequency in a more advanced way that can send a relatively large power up to several meters compared to the conventional contactless charging method Transmission systems have been proposed.
1 is a view illustrating a concept of a wireless power transmission apparatus according to a conventional magnetic resonance method.
As shown in FIG. 1, the wireless power transmission apparatus according to the conventional magnetic resonance method transmits a wireless power signal generated by the wireless
The present invention has been made to solve the problems of the prior art as described above, by installing a coil unit for suppressing the spread of the magnetic field around the power transmission antenna for transmitting wireless power using the magnetic resonance method, It is an object of the present invention to provide a wireless power transmission apparatus capable of preventing magnetic field spreading, which can prevent the magnetic field from spreading to an undesired area.
In accordance with another aspect of the present invention, there is provided a wireless power transmitter capable of preventing magnetic field spreading, and in a wireless power transmitter capable of wirelessly transmitting power, power transmission for transmitting a wireless power signal to the outside in a magnetic resonance method. Antenna for; A wireless power transmission station generating a wireless power signal when supplying commercial power, and supplying the generated wireless power signal to the power transmission antenna; And at least one magnetic field diffusion preventing coil unit disposed around a magnetic field direction of the wireless power signal transmitted from the power transmission antenna to suppress magnetic field diffusion of the wireless power signal.
Preferably, the magnetic field diffusion preventing coil unit is provided in a direction perpendicular to the direction of the central axis of the power transmission antenna.
Preferably, the magnetic field diffusion preventing coil unit is made of a resonance coil resonating at the same resonance frequency as the power transmission antenna.
Preferably, the magnetic field diffusion preventing coil unit further includes a receiving coil induced by magnetic induction of a wireless power signal resonating through the resonance coil.
Preferably, the receiving coil of the magnetic field diffusion preventing coil unit is connected to ground to ground the induced wireless power signal to ground.
Preferably, the receiving coil of the magnetic field diffusion preventing coil unit is connected to a wireless power transmission station to transmit the induced wireless power signal to the wireless power transmission station.
Preferably, the wireless power transmission station, a power supply unit for receiving the AC power of the commercial power source is converted into a direct current, a wireless power signal generator for generating a wireless power signal by receiving power from the power supply; A wireless power signal transmitter for transmitting the wireless power signal generated from the wireless power signal generator to the power transmission antenna, and a control unit for controlling the overall components of the wireless power transmission station.
Preferably, the wireless power transmission station further includes a wireless power signal re-receiving unit connected to the magnetic field diffusion preventing coil unit to re-receive the wireless power signal transmitted from the magnetic field diffusion coil unit, wherein the magnetic field diffusion preventing coil unit is a resonance coil. The receiving coil induced by magnetic induction of the wireless power signal resonating through the wireless power signal re-receiving unit is connected, and the wireless power signal re-receiving unit receives the wireless power signal transmitted from the receiving coil of the magnetic field diffusion preventing coil unit. Re-receipt is supplied to the wireless power signal transmitter.
According to the present invention, by installing a coil part for suppressing the spread of the magnetic field around the power transmission antenna for transmitting wireless power by using the magnetic resonance method, it is possible to prevent the magnetic field from spreading to an area not desired by the user. Through this, it is possible to provide a safer wireless power transmission device by suppressing the spread of the magnetic field that may be harmful to the human body.
BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and, together with the description, And shall not be interpreted.
1 is a view illustrating a concept of a wireless power transmission apparatus according to a conventional magnetic resonance method.
2 is a block diagram of a wireless power transmission apparatus capable of preventing magnetic field diffusion according to a first embodiment of the present invention.
3 is a block diagram of a wireless power transmission apparatus capable of preventing magnetic field diffusion according to a second embodiment of the present invention.
4 is a diagram illustrating a configuration of a wireless power transmission apparatus capable of preventing magnetic field diffusion according to a third embodiment of the present invention.
5 is a block diagram showing the configuration of a wireless power transmission station according to the present invention.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.
2 is a diagram illustrating a configuration of a wireless power transmitter capable of preventing magnetic field diffusion according to a first embodiment of the present invention, and FIG. 3 is a wireless power transmitter capable of preventing magnetic field diffusion according to a second embodiment of the present invention. 4 is a diagram illustrating a configuration of a wireless power transmission apparatus capable of preventing magnetic field diffusion according to a third embodiment of the present invention.
Referring to FIG. 2, the wireless power transmitter capable of preventing magnetic field diffusion according to the first exemplary embodiment of the present invention may wirelessly transmit power to a portable electronic device or a small home appliance to be used as a battery charging or driving power source. An apparatus, comprising: a wireless
The
The
In the first embodiment of the present invention, the magnetic field diffusion preventing
Specifically, as shown in FIG. 2, the magnetic field diffusion preventing
Meanwhile, in the first embodiment of the present invention, the magnetic field diffusion preventing
In the second embodiment of the present invention, the magnetic field diffusion preventing
In addition, in the third embodiment of the present invention, the magnetic field diffusion preventing
5 is a block diagram showing the configuration of a wireless power transmission station according to the present invention.
Hereinafter, a detailed configuration of the wireless
Referring to FIG. 5, the wireless
The
The wireless
The wireless
The
In addition, when the magnetic field diffusion preventing
As described above, the wireless power transmitter according to the present invention redirects or grounds the magnetic field of the wireless power signal propagated by the
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.
100: wireless power transmission station 200: antenna for power transmission
300: magnetic field diffusion preventing coil portion
Claims (8)
A power transmission antenna for transmitting the wireless power signal to the outside in a magnetic resonance manner;
A wireless power transmission station generating a wireless power signal when supplying commercial power, and supplying the generated wireless power signal to the power transmission antenna; And
And at least one magnetic field diffusion preventing coil unit disposed around a magnetic field direction of the wireless power signal transmitted from the power transmission antenna to suppress magnetic field spreading of the wireless power signal. Power transmission device.
The magnetic field diffusion preventing coil unit,
Wireless power transmission device capable of preventing magnetic field diffusion, characterized in that installed in a direction perpendicular to the direction of the center axis of the power transmission antenna.
The magnetic field diffusion preventing coil unit,
Wireless power transmission device capable of preventing magnetic field diffusion, characterized in that consisting of a resonance coil resonating at the same resonance frequency as the power transmission antenna.
The magnetic field diffusion preventing coil unit,
And a receiving coil inducing a wireless power signal resonated through the resonant coil by magnetic induction.
And the receiving coil of the magnetic field diffusion preventing coil unit is connected to the ground to ground the induced wireless power signal to the ground.
And the receiving coil of the magnetic field diffusion preventing coil unit is connected to a wireless power transmission station to transfer the induced wireless power signal to the wireless power transmission station.
The wireless power transmission station,
A power supply unit which receives an AC power of the commercial power and converts the DC power into a direct current;
A wireless power signal generation unit receiving power from the power supply unit to generate a wireless power signal;
A wireless power signal transmitter for transmitting the wireless power signal generated from the wireless power signal generator to the power transmission antenna;
Wireless power transmission apparatus capable of preventing magnetic field spreading, characterized in that it comprises a control unit for controlling the overall components of the wireless power transmission station.
The wireless power transmission station further includes a wireless power signal re-receiving unit connected to the magnetic field diffusion preventing coil unit to re-receive the wireless power signal transmitted from the magnetic field diffusion coil unit.
The magnetic field diffusion preventing coil unit is connected to the wireless power signal re-receiving unit is a receiving coil which is induced by magnetic induction of a wireless power signal resonating through the resonance coil,
And the wireless power signal re-receiving unit re-receives a wireless power signal transmitted from the receiving coil of the magnetic field diffusion preventing coil unit and supplies the wireless power signal to the wireless power signal transmitting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120058450A KR20130134726A (en) | 2012-05-31 | 2012-05-31 | Apparatus for wireless power transmission capable of magnetic field prevent diffusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120058450A KR20130134726A (en) | 2012-05-31 | 2012-05-31 | Apparatus for wireless power transmission capable of magnetic field prevent diffusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20130134726A true KR20130134726A (en) | 2013-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020120058450A KR20130134726A (en) | 2012-05-31 | 2012-05-31 | Apparatus for wireless power transmission capable of magnetic field prevent diffusion |
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| KR (1) | KR20130134726A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9837829B2 (en) | 2014-03-27 | 2017-12-05 | Lg Innotek Co., Ltd. | Wireless power transmission system having wireless power transmitter |
| US10014588B2 (en) | 2014-12-05 | 2018-07-03 | Samsung Electro-Mechanics Co., Ltd. | Near-field antenna apparatus using eddy current and electronic device including the same |
| US10580560B2 (en) | 2016-12-28 | 2020-03-03 | Wits Co., Ltd. | Coil module |
-
2012
- 2012-05-31 KR KR1020120058450A patent/KR20130134726A/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9837829B2 (en) | 2014-03-27 | 2017-12-05 | Lg Innotek Co., Ltd. | Wireless power transmission system having wireless power transmitter |
| US10014588B2 (en) | 2014-12-05 | 2018-07-03 | Samsung Electro-Mechanics Co., Ltd. | Near-field antenna apparatus using eddy current and electronic device including the same |
| US10580560B2 (en) | 2016-12-28 | 2020-03-03 | Wits Co., Ltd. | Coil module |
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