KR101169661B1 - Contactless charging receiver having superior magnetic shielding effect - Google Patents

Contactless charging receiver having superior magnetic shielding effect Download PDF

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Publication number
KR101169661B1
KR101169661B1 KR1020100125268A KR20100125268A KR101169661B1 KR 101169661 B1 KR101169661 B1 KR 101169661B1 KR 1020100125268 A KR1020100125268 A KR 1020100125268A KR 20100125268 A KR20100125268 A KR 20100125268A KR 101169661 B1 KR101169661 B1 KR 101169661B1
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South Korea
Prior art keywords
pet film
charging receiver
battery
wireless charging
tape
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KR1020100125268A
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Korean (ko)
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소태섭
박설완
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(주)엠에이피테크
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    • 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
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/288—Shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/526—Electromagnetic shields
    • 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
    • H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C7/00—Modulating electromagnetic waves
    • H03C7/02—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas
    • H03C7/022—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas using ferromagnetic devices, e.g. ferrites
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • H04B5/266—One coil at each side, e.g. with primary and secondary coils

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Telephone Set Structure (AREA)

Abstract

PURPOSE: A wireless charging receiver with a shield effect is provided to increase charging efficiency by minimizing a magnetic field leakage using a magnetic shield as a shielding material. CONSTITUTION: A charging transmitter includes a ferrite core(120) and a primary coil(110). A wireless charging receiver(200) includes a body(210), a secondary coil(220), a reception ferrite member(230), and a magnetic shield(240). The body is detachably mounted on a portable terminal(300). The secondary coil is electrically connected to a battery. The magnetic shield prevents an inductive magnetic field generated by the primary coil from being emitted in a battery direction.

Description

차폐효과가 우수한 무선충전수신기 { Contactless charging receiver having superior magnetic shielding effect } Wireless charging receiver with excellent shielding effect {Contactless charging receiver having superior magnetic shielding effect}

본 발명은 무선충전수신기에 관한 것으로서, 특히 유도기전력을 이용하여 휴대단말기의 배터리를 충전시킬 수 있는 차폐효과가 우수한 무선충전수신기에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless charging receiver, and more particularly, to a wireless charging receiver having an excellent shielding effect capable of charging a battery of a portable terminal using induction electromotive force.

이동통신단말, PDA 등과 같은 휴대형 전자기기에는 재충전 가능한 2차 전지(배터리)가 장착된다. Portable electronic devices such as mobile communication terminals and PDAs are equipped with rechargeable secondary batteries (batteries).

2차 전지(배터리)를 충전하기 위해서는 가정용 상용 전원을 이용하여 휴대형 전자기기의 배터리에 전기 에너지를 제공하는 별도의 충전장치가 필요하다. In order to charge a secondary battery (battery), a separate charging device for providing electrical energy to a battery of a portable electronic device using a commercial power source for home is needed.

통상적으로, 충전장치와 배터리에는 외부에 각각 별도의 접촉 단자가 구성되어 있어서, 두 접촉 단자를 서로 접속시키는 것에 의해 충전장치와 배터리를 전기적으로 연결한다.Typically, a separate contact terminal is configured on the outside of the charging device and the battery, thereby electrically connecting the charging device and the battery by connecting the two contact terminals to each other.

그러나 이와 같이 접촉 단자가 외부에 돌출되면, 미관상 좋지 않고 접촉 단자가 외부의 이물질에 오염되어 접촉 상태가 쉽게 불량해지는 문제점이 있다.However, when the contact terminal protrudes to the outside as described above, there is a problem in that the contact state is not good and the contact terminal is contaminated with external foreign matters so that the contact state is easily poor.

또한, 사용자의 부주의로 배터리에 단락이 발생하거나 습기에 노출되면, 충전에너지가 쉽게 소실될 수 있다.In addition, when the battery is inadvertently shorted or exposed to moisture, the charging energy may be easily lost.

이러한 접촉식 충전방식의 문제점을 해결하기 위하여, 충전장치와 배터리를 비접촉 방식으로 충전하는 무접점 충전 시스템이 제안되었다.In order to solve the problem of the contact charging method, a contactless charging system for charging the charging device and the battery in a non-contact method has been proposed.

도 1은 종래기술에 따른 무접점 충전 시스템을 개략적으로 도시한 도면이다.1 is a view schematically showing a contactless charging system according to the prior art.

도면을 참조하면, 종래기술에 따른 무접점 충전시스템은 외부 전원을 이용하여 배터리에 공급할 충전 전력을 생성시키는 충전 모체(10)와, 이 충전 모체(10)로부터 무접점으로 상기 충전 전력을 공급받고, 이를 이용하여 내부의 배터리(미도시)를 충전시키는 배터리장치(15)로 이루어진다.Referring to the drawings, the contactless charging system according to the prior art is a charging matrix 10 for generating a charging power to be supplied to the battery using an external power source, and the charging power is supplied from the charging matrix 10 to the contactless By using this, a battery device 15 for charging an internal battery (not shown) is formed.

상기 충전 모체(10)는 외부 전원(예를 들어, 상용 교류전원)으로부터 전기에너지를 공급받아 상기 배터리장치(15)에 공급할 충전 전력을 생성하는 무선전력 전송회로(12) 및 1차코일(11)을 구비한다.The charging matrix 10 receives electric energy from an external power source (for example, commercial AC power) and generates a wireless power transmission circuit 12 and a primary coil 11 to generate charging power to be supplied to the battery device 15. ).

상기 배터리장치(15)는 배터리가 내장된 배터리 유닛이나 배터리를 내장하고 있는 휴대형 전자기기를 나타낸다. The battery device 15 represents a battery unit having a battery or a portable electronic device having a battery therein.

일반적인 휴대형 전자기기로서는 셀룰러폰, PDA, MP3 플레이어 등을 들 수 있다.Typical portable electronic devices include cellular phones, PDAs, and MP3 players.

상기 배터리장치(15)는 2차코일(16) 및 2차코일(16)에 연결되는 충전회로(17)를 포함한다.The battery device 15 includes a secondary coil 16 and a charging circuit 17 connected to the secondary coil 16.

상기 1, 2차코일(11, 16)은 유도 결합에 의해 자기적으로 상호 커플링되며, 상기 2차코일(16)이 상기 1차코일(11) 위에 병렬됨(juxtaposed)에 따라 1차코일(11)에 의해 생성되는 자기장이 2차코일(16) 내에 유도 전류를 유기하게 된다.The primary and secondary coils 11 and 16 are magnetically coupled to each other by inductive coupling, and as the secondary coils 16 juxtaposed on the primary coils 11, primary coils. The magnetic field generated by (11) induces an induced current in the secondary coil 16.

상기 충전회로(17)가 상기 유도 전류를 변환하여 소정의 전원을 발생시키며, 이(전원)를 통해 배터리를 충전시킨다.The charging circuit 17 converts the induced current to generate a predetermined power supply, thereby charging the battery.

한편, 종래에는 상기 1차코일(11)에서 발생되는 유도자기장이 상기 2차코일(16)에 잘 유도되도록 하기 위해, 상기 2차코일(16)의 후면에 자성판 등의 페라이트코어를 장착하고, 페라이트코어의 후면에 자기장으로부터 배터리장치(15)를 보호하기 위한 차폐판을 장착하였다.On the other hand, conventionally, in order to induce the magnetic field generated in the primary coil 11 to the secondary coil 16, a ferrite core such as a magnetic plate on the back of the secondary coil 16 and On the back of the ferrite core, a shield plate for protecting the battery device 15 from the magnetic field was mounted.

상기 차폐판으로는 일반적으로 니켈 78%정도를 함유하고 있는 PC퍼멀로이(PC Permalloy)를 사용하고 있다.As the shielding plate, PC Permalloy, which generally contains about 78% nickel, is used.

그러나, PC퍼멀로이의 경우에는 위와 같이 니켈을 많이 함유하고 있기 때문에, 단단하여 가공이 용이하지 않고, 이를 다른 부품에 장착하고자 할 경우 잘 휘어지지 않는바 장착하기도 곤란하며, 니켈을 많이 함유하고 있기 때문에 무거운 단점이 있다.However, in the case of PC permalloy, since it contains a lot of nickel as above, it is hard and easy to process. There is a heavy disadvantage.

본 발명은 전술한 문제점을 해결하기 위한 것으로써, 자기장이 누설되는 것을 방지하기 위한 차폐재로 PC퍼멀로이가 아닌 가공이 용이하고 잘 휘어지는 유연한 성질을 가지고 있고 무게도 가벼워 다른 부품에 장착하기가 용이하며 차폐효과도 우수한 새로운 재질의 마그네틱쉴드가 장착된 차폐효과가 우수한 무선충전수신기를 제공하는데 그 목적이 있다.The present invention is to solve the above-mentioned problems, the shielding material to prevent the magnetic field leakage, non-PC permalloy is easy to process, has a flexible property that is flexible, light weight, easy to install on other parts, shielding The purpose of the present invention is to provide a wireless charging receiver with excellent shielding effect, which is equipped with a magnetic shield made of a new material with excellent effect.

상기 목적을 달성하기 위하여 본 발명의 차폐효과가 우수한 무선충전수신기는, 제1차코일이 장착된 외부의 충전송신기에 무접점으로 인접하게 배치되어 배터리가 충전되는 무선충전수신기에 있어서, 본체와; 상기 본체에 장착되고, 상기 제1차코일에 발생되는 유도자기장에 의해 유도기전력을 발생시키며, 상기 배터리와 연결된 제2차코일과; 상기 제2차코일의 후면에 배치되어 상기 제2차코일에 상기 유도자기장이 잘 유도되도록 하는 수신페라이트부재와; 상기 수신페라이트부재의 후면에 배치되어 상기 유도자기장이 상기 배터리 방향으로 방출되는 것을 차단하는 마그네틱쉴드로 이루어지되, 상기 마그네틱쉴드는 PET필름과 비결정질의 테이프가 적층되어 경량의 유연한 재질로 이루어지고, 상기 테이프는 Fe, Si, B, Cu, Nb를 함유하여 이루어진 것을 특징으로 한다.Wireless charging receiver having an excellent shielding effect of the present invention to achieve the above object, the wireless charging receiver is disposed adjacent to a non-contact to the external charging transmitter equipped with a primary coil, the battery is charged, the main body; A secondary coil mounted to the main body, the induced secondary electromotive force being generated by an induction magnetic field generated in the primary coil, and connected to the battery; A reception ferrite member disposed on a rear surface of the second coil to allow the induction magnetic field to be induced well in the second coil; The magnetic shield is disposed on the rear surface of the receiving ferrite member to block the discharge of the induction magnetic field toward the battery, and the magnetic shield is made of a lightweight flexible material by laminating a PET film and an amorphous tape. The tape is characterized by containing Fe, Si, B, Cu, Nb.

상기 테이프는 일본 히타치(Hitachi)사에서 생산하는 FINEMET®FT-3M 으로 이루어짐이 바람직하다.The tape is preferably made of FINEMET ® FT-3M produced by Hitachi, Japan.

상기 PET필름은 제1PET필름과 제2PET필름으로 이루어지되, 상기 마그네틱쉴드는, 상기 제1PET필름, 테이프, 제2PET필름이 순차적으로 적층되어 이루어진다.The PET film is composed of a first PET film and a second PET film, the magnetic shield, the first PET film, the tape, the second PET film is formed by sequentially stacking.

상기 PET필름과 테이프 사이에는 핫멜트(Hot-melt)접착제가 배치되어, 상기 PET필름과 테이프를 상호 결합시킨다.A hot melt adhesive is disposed between the PET film and the tape to bond the PET film and the tape to each other.

상기 수신페라이트부재는, 철(Fe) 88~90중량%, 알루미늄(Al) 8~10중량%, PVC 0.5~2.5%, 촉매 0.5~1.5중량%가 혼합되어 이루어진다.The receiving ferrite member is made of 88 to 90% by weight of iron (Fe), 8 to 10% by weight of aluminum (Al), 0.5 to 2.5% of PVC, 0.5 to 1.5% by weight of the catalyst is mixed.

상기 본체는 휴대단말기에 탈착 가능하게 장착되어 상기 휴대단말기를 덮는 커버임이 바람직하다.The main body is preferably a cover that is detachably mounted to the portable terminal and covers the portable terminal.

이상에서 설명한 바와 같은 본 발명의 차폐효과가 우수한 무선충전수신기에 따르면 다음과 같은 효과가 있다.According to the wireless charging receiver excellent in the shielding effect of the present invention as described above has the following effects.

자기장이 누설되는 것을 방지하기 위한 차폐재로 PC퍼멀로이가 아닌 새로운 재질의 마그네틱쉴드를 장착함으로써, 가공이 용이하고 잘 휘어지는 유연한 성질을 가지고 있어 다른 부품에 장착하기가 용이하며, 차폐효과도 종래의 재료들보다 더 우수하여 자기장이 누설되는 것을 최소화할 수 있어 충전효율을 증대시킬 수 있고, 정전용량센서가 장착된 터치형 휴대단말기의 경우 오작동이 발생하는 것을 방지할 수 있다.As a shielding material to prevent leakage of magnetic field, it is easy to process and flexible to bend easily by attaching magnetic shield made of new material instead of PC permalloy, and it is easy to attach to other parts. It is much better to minimize the leakage of the magnetic field to increase the charging efficiency, it is possible to prevent the malfunction of the touch type mobile terminal equipped with the capacitive sensor.

또한, 충전수신기의 본체가 상기 휴대단말기에 탈착 가능하게 장착되어 휴대단말기를 덮는 커버로 이루어지도록 함으로써, 무접점충전부품(코일 등)이 장착되어 있지 않는 기존의 휴대단말기에도 본 발명의 무선충전수신기를 장착하여 쉽게 무접점 충전시스템을 구축할 수 있다.In addition, the main body of the charging receiver is detachably mounted to the portable terminal to form a cover covering the portable terminal, so that the wireless charging receiver of the present invention is also used in an existing portable terminal which is not equipped with a contactless charging component (coil, etc.). It is easy to build a contactless charging system by mounting

도 1은 종래기술에 따른 무접점 충전 시스템을 개략적으로 도시한 도면,
도 2는 본 발명의 실시예에 따른 무선충전수신기와 충전송신기의 분해도,
도 3은 본 발명의 실시예에 따른 마그네틱쉴드의 단면구조도,
도 4는 본 발명의 실시예에 따른 무선충전수신기에 마그네틱쉴드와 다른 재료를 장착하였을 때 자기파의 차폐효과를 도시한 그래프.1 is a view schematically showing a contactless charging system according to the prior art,
2 is an exploded view of a wireless charging receiver and a charging transmitter according to an embodiment of the present invention,
3 is a cross-sectional structure diagram of the magnetic shield according to the embodiment of the present invention;
Figure 4 is a graph showing the shielding effect of magnetic waves when the magnetic shield and other materials mounted to the wireless charging receiver according to an embodiment of the present invention.

도 2는 본 발명의 실시예에 따른 무선충전수신기와 충전송신기의 분해도이고, 도 3은 본 발명의 실시예에 따른 마그네틱쉴드의 단면구조도이며, 도 4는 본 발명의 실시예에 따른 무선충전수신기에 마그네틱쉴드와 다른 재료를 장착하였을 때 자기파의 차폐효과를 도시한 그래프이다.2 is an exploded view of a wireless charging receiver and a charging transmitter according to an embodiment of the present invention, Figure 3 is a cross-sectional structural view of the magnetic shield according to an embodiment of the present invention, Figure 4 is a wireless charging receiver according to an embodiment of the present invention This is a graph showing the shielding effect of magnetic waves when a magnetic shield and other materials are attached to the circuit.

본 발명의 무선충전수신기(200)는 외부의 충전송신기(100)에 무접점으로 인접하게 배치되어, 무선충전수신기(200) 자체에 내장된 또는 다른 제품에 내장된 배터리를 충전하는 것이다.The wireless charging receiver 200 of the present invention is disposed adjacent to the external charging transmitter 100 in a non-contact manner to charge a battery built in the wireless charging receiver 200 itself or embedded in another product.

이를 위한 상기 충전송신기(100)는, 도 2에 도시된 바와 같이 페라이트코어(Ferrite core, 120)와 제1차코일(110)를 포함하여 이루어진다.The charging transmitter 100 for this purpose, as shown in FIG. 2 includes a ferrite core (120) and the primary coil (110).

본 발명의 차폐효과가 우수한 무선충전수신기(200)는 도 2에 도시된 바와 같이, 본체(210)와, 제2차코일(220), 수신페라이트부재(230), 마그네틱쉴드(240)를 포함하여 이루어진다.Wireless charging receiver 200 excellent in the shielding effect of the present invention, as shown in Figure 2, the body 210, the second coil 220, the receiving ferrite member 230, the magnetic shield 240 It is done by

상기 본체(210)는 합성수지재 등으로 이루어진다.The main body 210 is made of a synthetic resin material.

상기 본체(210)는, 휴대단말기(300) 자체가 될 수도 있고, 상기 휴대단말기(300)를 덮는 커버가 될 수도 있다.The main body 210 may be the mobile terminal 300 itself or may be a cover for covering the mobile terminal 300.

즉, 상기 본체(210)가 휴대단말기(300) 자체일 경우에는, 상기 본체(210)에 배터리가 내장되어 있고, 상기 제2차코일(220), 수신페라이트부재(230) 및 마그네틱쉴드(240)도 휴대단말기(300)에 장착된다.That is, when the main body 210 is the mobile terminal 300 itself, the battery is built in the main body 210, the second coil 220, the receiving ferrite member 230 and the magnetic shield 240 ) Is also mounted to the mobile terminal (300).

이와 달리, 상기 본체(210)가 휴대단말기(300)를 덮는 커버 형식으로 이루어진 경우에는, 상기 본체(210) 자체에는 배터리가 내장되어 있지 않고, 상기 휴대단말기(300)에 내장된 배터리와 연결되는 단자(미도시)가 구비되어 있으며, 상기 제2차코일(220), 수신페라이트부재(230) 및 마그네틱쉴드(240)는 휴대단말기(300)가 아닌 상기 휴대단말기(300)를 덮는 상기 본체(210)에 장착된다.On the contrary, when the main body 210 is formed in a cover type covering the portable terminal 300, the main body 210 itself is not built in a battery, but is connected to a battery embedded in the portable terminal 300. A terminal (not shown) is provided, and the second coil 220, the receiving ferrite member 230, and the magnetic shield 240 cover the main body (300) instead of the mobile terminal (300). 210 is mounted.

본 실시예에서는 상기 본체(210)가 휴대단말기(300)와 별도로 된 구성으로 상기 휴대단말기(300)를 덮는 커버 역할을 하도록 되어 있다.In the present embodiment, the main body 210 serves as a cover covering the mobile terminal 300 in a configuration separate from the mobile terminal 300.

위와 같이, 상기 본체(210)가 상기 휴대단말기(300)에 탈착 가능하게 장착되어 휴대단말기(300)를 덮는 커버로 이루어지도록 함으로써, 무접점충전부품(코일 등)이 장착되어 있지 않는 기존의 휴대단말기(300)에도 본 발명의 무선충전수신기(200)를 장착하여 쉽게 무접점 충전시스템을 구축할 수 있다.As described above, the main body 210 is detachably mounted to the portable terminal 300 so that the main body 210 is formed of a cover covering the portable terminal 300, and thus the existing portable device in which the contactless charging part (coil, etc.) is not mounted. The terminal 300 may also be equipped with the wireless charging receiver 200 of the present invention to easily construct a contactless charging system.

상기 제2차코일(220)은 상기 본체(210)에 장착되며, 상기 제1차코일(110)에 발생되는 유도자기장에 의해 유도기전력을 발생시키는 역할을 한다.The secondary coil 220 is mounted on the main body 210 and serves to generate induced electromotive force by an induction magnetic field generated in the primary coil 110.

이러한 상기 제2차코일(220)은 상기 배터리와 전기적으로 연결되어 있다.The secondary coil 220 is electrically connected to the battery.

상기 수신페라이트부재(230)는 상기 제2차코일(220)의 후면 즉 상기 제2차코일(220)을 기준으로 상기 제1차코일(110)이 배치되는 방향의 반대방향에 배치된다.The receiving ferrite member 230 is disposed in a direction opposite to the direction in which the first primary coil 110 is disposed with respect to the rear surface of the second secondary coil 220, that is, the second secondary coil 220.

이러한 상기 수신페라이트부재(230)는 상기 제2차코일(220)의 후면에 배치되어 상기 제2차코일(220)에 상기 제1차코일(110)에서 발생된 상기 유도자기장이 보다 잘 유도되도록 하는 역할을 한다.The receiving ferrite member 230 is disposed on the rear surface of the second coil 220 so that the induction magnetic field generated by the first coil 110 is better induced in the second coil 220. It plays a role.

이를 위해, 상기 수신페라이트부재(230)는, 철(Fe) 88~90중량%, 알루미늄(Al) 8~10중량%, PVC 0.5~2.5%, 촉매 0.5~1.5중량%가 혼합되어 이루어진다.To this end, the receiving ferrite member 230, iron (Fe) 88 ~ 90% by weight, aluminum (Al) 8 ~ 10% by weight, PVC 0.5 ~ 2.5%, the catalyst is made of 0.5 ~ 1.5% by weight.

바람직하게는, 상기 수신페라이트부재(230)는, 철(Fe) 89중량%, 알루미늄(Al) 9중량%, PVC 1.5%, 촉매 0.5중량%가 혼합되어 이루어지도록 한다.Preferably, the receiving ferrite member 230 is made of a mixture of 89% by weight of iron (Fe), 9% by weight of aluminum (Al), 1.5% of PVC, 0.5% by weight of the catalyst.

상기 마그네틱쉴드(240)는, 상기 수신페라이트부재(230)의 후면 즉 상기 수신페라이트부재(230)를 중심으로 상기 제2차코일(220)의 반대방향에 배치되어, 상기 제1차코일(110)에 의해 발생된 유도자기장이 상기 배터리 방향으로 방출되는 것을 차단하는 역할을 한다.The magnetic shield 240 is disposed on the rear surface of the receiving ferrite member 230, that is, the opposite direction of the second secondary coil 220 about the receiving ferrite member 230, and the first primary coil 110. It serves to block the induction magnetic field generated by) to be discharged toward the battery.

위와 같은 상기 마그네틱쉴드(240)에 의해 상기 유도자기장이 외부로 방출되는 것을 차단할 수 있어, 충전효율을 증대시킬 수 있고, 유도자기장이 외부로 누설되지 않기 때문에 정전용량센서를 장착한 터치방식의 휴대단말기(300)에 미치는 영향을 최소화하여 휴대단말기(300)가 오작동되는 것을 방지할 수 있다.The magnetic shield 240 as described above can block the discharge of the induction magnetic field to the outside, it is possible to increase the charging efficiency, because the induction magnetic field does not leak to the outside of the touch-type portable portable By minimizing the influence on the terminal 300, it is possible to prevent the portable terminal 300 from malfunctioning.

이러한 상기 마그네틱쉴드(240)는 PET필름(241,244)과 비결정질의 테이프(243)가 적층되어 경량의 유연한 재질로 이루어진다.The magnetic shield 240 is made of a PET material (241,244) and the amorphous tape 243 is laminated to a lightweight flexible material.

상기 PET필름(241,244)은 제1PET필름(241)과 제2PET필름(244)으로 이루어지고, 상기 테이프(243)는 Fe, Si, B, Cu, Nb를 함유하여 이루어진다.The PET films 241 and 244 are composed of a first PET film 241 and a second PET film 244, and the tape 243 contains Fe, Si, B, Cu, and Nb.

상기 테이프(243)는 일본 히타치(Hitachi)사에서 생산하는 "FINEMET®FT-3M"으로 이루어짐이 바람직하다.The tape 243 is preferably made of "FINEMET ® FT-3M" produced by Hitachi, Japan.

상기 마그네틱쉴드(240)의 구체적인 구조는 도 3에 도시된 바와 같이, 제1PET필름(241), 핫멜트(Hot-melt)접착제(242), 테이프(243), 핫멜트접착제(242), 제2PET필름(244)이 순차적으로 적층되어 있다.As shown in FIG. 3, the specific structure of the magnetic shield 240 may include a first PET film 241, a hot melt adhesive 242, a tape 243, a hot melt adhesive 242, and a second PET film. 244 are sequentially stacked.

상기 핫멜트접착제(242)는 상기 PET필름(241,244)과 테이프(243) 사에서 배치되어 상기 PET필름(241,244)과 테이프(243)를 상호 결합시키는 역할을 한다.The hot melt adhesive 242 is disposed on the PET films 241 and 244 and the tape 243, and serves to bond the PET films 241 and 244 and the tape 243 to each other.

그리고, 상기 제1PET필름(241), 핫멜트접착제(242), 제2PET필름(244)은 각각 두께가 25㎛이고, 상기 테이프(243)의 두께는 18㎛이기 때문에, 상기 마그네틱쉴드(240)의 전체두께가 약 0.12mm 정도밖에 되지 않는다.Since the first PET film 241, the hot melt adhesive 242, and the second PET film 244 each have a thickness of 25 μm, and the tape 243 has a thickness of 18 μm, the magnetic shield 240 may be formed. The total thickness is only about 0.12mm.

위와 같은 상기 마그네틱쉴드(240)는, 높은 투자율을 갖는 상기 테이프(243, FINEMET®FT-3M)와 상기 PET필름(241,244)을 적층하여 이루어지기 때문에, 가볍고 잘 휘어지는 유연한 성질을 가지고 있는바, 작업자가 다양한 형상으로 가공하거나 및 다른 구성에 장착하기가 용이한 효과가 있다.The magnetic shield 240 as described above, because it is made by laminating the tape (243, FINEMET ® FT-3M) and the PET film (241,244) having a high permeability, and has a flexible and flexible flexible bar, worker There is an effect that it is easy to process into various shapes or to be mounted in other configurations.

즉, 종래의 차폐재의 경우는, 금속 특히 니켈을 많이 함유하고 있기 때문에, 상기 마그네틱쉴드(240)만큼 잘 휘어지지 않기 때문에, 작업자가 다양한 형상으로 가공하거나 다른 구성에 장착하기가 용이하지 않았다.That is, in the case of the conventional shielding material, since it contains much metal, especially nickel, it does not bend as much as the said magnetic shield 240, and it was not easy for an operator to process it in various shapes or attach it to another structure.

또한, 상기 마그네틱쉴드(240)는 도 4에 도시된 바와 같이, 수백 kHZ 이하의 주파수에서 자기력을 막는 효과 즉 차폐효과가 매우 우수하다.In addition, as shown in Figure 4, the magnetic shield 240 is excellent in blocking the magnetic force at a frequency of several hundred kHZ or less, that is, excellent shielding effect.

도 4에 도시된 바와 같이, 상기 마그네틱쉴드(240)는 차폐효과가 우수하다고 알려진 PC퍼멀로이(PC Permalloy)와 비교하여, 200kHZ이하에서는 자기파에 대한 차폐효과가 더 우수함을 알 수 있고, 그 무게 또한 가벼움을 알 수 있다.As shown in FIG. 4, the magnetic shield 240 has a better shielding effect against magnetic waves below 200 kHZ, compared with PC Permalloy, which is known to have a superior shielding effect. You can also see the lightness.

따라서, 위와 같은 상기 마그네틱쉴드(240)가 상기 제2차코일(220) 및 수신페라이트부재(230)의 후면에 배치됨으로써, 상기 제1차코일(110)에서 발생되는 유도자기장이 휴대단말기(300)로 방출되는 것을 최소화시킬 수 있다.Therefore, the magnetic shield 240 as described above is disposed on the rear of the second coil 220 and the receiving ferrite member 230, the induction magnetic field generated in the first coil 110 is a portable terminal 300 ) Can be minimized.

본 발명인 차폐효과가 우수한 무선충전수신기는 전술한 실시예에 국한하지 않고, 본 발명의 기술 사상이 허용되는 범위 내에서 다양하게 변형하여 실시할 수 있다.The wireless charging receiver excellent in the shielding effect of the present invention is not limited to the above-described embodiment, it can be carried out in a variety of modifications within the allowable range of the technical idea of the present invention.

100 : 충전송신기, 110 : 제1차코일, 120 : 페라이트코어,
200 : 충전수신기, 210 본체, 220 : 제2차코일, 230 : 수신페라이트부재, 240 : 마그네틱쉴드, 241 : 제1PET필름, 242 : 핫멜트접착제, 243 : 테이프, 244 : 제2PET필름,
300 : 휴대단말기,100: charging transmitter, 110: primary coil, 120: ferrite core,
200: charging receiver, 210 main body, 220: secondary coil, 230: receiving ferrite member, 240: magnetic shield, 241: first PET film, 242: hot melt adhesive, 243: tape, 244: second PET film,
300: mobile terminal,

Claims (6)

제1차코일이 장착된 외부의 충전송신기에 무접점으로 인접하게 배치되어 배터리가 충전되는 무선충전수신기에 있어서,
본체와;
상기 본체에 장착되고, 상기 제1차코일에 발생되는 유도자기장에 의해 유도기전력을 발생시키며, 상기 배터리와 연결된 제2차코일과;
상기 제2차코일의 후면에 배치되어 상기 제2차코일에 상기 유도자기장이 잘 유도되도록 하는 수신페라이트부재와;
상기 수신페라이트부재의 후면에 배치되어 상기 유도자기장이 상기 배터리 방향으로 방출되는 것을 차단하는 마그네틱쉴드로 이루어지되,
상기 수신페라이트부재는, 철(Fe) 88~90중량%, 알루미늄(Al) 8~10중량%, PVC 0.5~2.5%, 촉매 0.5~1.5중량%가 혼합되어 이루어지고,
상기 마그네틱쉴드는 PET필름과 비결정질의 테이프가 적층되어 경량의 유연한 재질로 이루어지며, 상기 테이프는 Fe, Si, B, Cu, Nb를 함유하여 이루어진 것을 특징으로 하는 차폐효과가 우수한 무선충전수신기.In a wireless charging receiver in which a battery is charged by being disposed in a contactless manner adjacent to an external charging transmitter equipped with a primary coil,
A main body;
A secondary coil mounted to the main body, the induced secondary electromotive force being generated by an induction magnetic field generated in the primary coil, and connected to the battery;
A reception ferrite member disposed on a rear surface of the second coil to allow the induction magnetic field to be induced well in the second coil;
Is disposed on the rear of the receiving ferrite member is made of a magnetic shield to block the discharge of the induction magnetic field toward the battery,
The receiving ferrite member is made of 88 to 90% by weight of iron (Fe), 8 to 10% by weight of aluminum (Al), 0.5 to 2.5% of PVC, 0.5 to 1.5% by weight of the catalyst is mixed,
The magnetic shield is a PET film and an amorphous tape is laminated is made of a lightweight flexible material, the tape is Fe, Si, B, Cu, Nb excellent wireless charging receiver, characterized in that made of a shielding effect. 삭제delete 제 1항에 있어서,
상기 PET필름은 제1PET필름과 제2PET필름으로 이루어지되,
상기 마그네틱쉴드는,
상기 제1PET필름, 테이프, 제2PET필름이 순차적으로 적층되어 이루어진 것을 특징으로 하는 차폐효과가 우수한 무선충전수신기.The method of claim 1,
The PET film is made of a first PET film and a second PET film,
The magnetic shield,
The wireless charging receiver having excellent shielding effect, characterized in that the first PET film, the tape, the second PET film is sequentially stacked. 제 3항에 있어서,
상기 PET필름과 테이프 사이에는 핫멜트(Hot-melt)접착제가 배치되어, 상기 PET필름과 테이프를 상호 결합시키는 것을 특징으로 하는 차폐효과가 우수한 무선충전수신기.The method of claim 3, wherein
Hot-melt adhesive is disposed between the PET film and the tape, wireless charging receiver excellent shielding effect, characterized in that the PET film and the tape to be bonded to each other. 삭제delete 제 1항에 있어서,
상기 본체는 휴대단말기에 탈착 가능하게 장착되어 상기 휴대단말기를 덮는 커버인 것을 특징으로 하는 차폐효과가 우수한 무선충전수신기.The method of claim 1,
The main body is a wireless charging receiver having excellent shielding effect, characterized in that the cover is detachably mounted to the portable terminal covering the mobile terminal.
KR1020100125268A 2010-12-09 2010-12-09 Contactless charging receiver having superior magnetic shielding effect KR101169661B1 (en)

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Cited By (5)

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KR101554605B1 (en) 2013-05-16 2015-09-22 주식회사 애니모드 Mobile phone cover comprising auxiliary battery
KR20160087039A (en) 2015-01-12 2016-07-21 주식회사 아모그린텍 Wireless Power Transmitters and Wireless Charging Device having the Same
KR20160087040A (en) 2015-01-12 2016-07-21 주식회사 아모그린텍 Heat Radiation Unit and Wireless Power Receiving Device Having the Same
US10332672B2 (en) 2015-01-12 2019-06-25 Amogreentech Co., Ltd. Heat radiation unit and wireless power transmitting and receiving device having same
CN112204687A (en) * 2018-05-22 2021-01-08 普莱默股份公司 Inductive energy transmitter/receiver for inductive charger of electric vehicle

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JP2009525715A (en) 2006-01-31 2009-07-09 エルエス ケーブル リミテッド Non-contact charging device provided with coil array, non-contact charging system and charging method

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JP2009525715A (en) 2006-01-31 2009-07-09 エルエス ケーブル リミテッド Non-contact charging device provided with coil array, non-contact charging system and charging method
KR100819753B1 (en) * 2007-07-13 2008-04-08 주식회사 한림포스텍 Non-contact charger system of wireless power transmision for battery and control method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101554605B1 (en) 2013-05-16 2015-09-22 주식회사 애니모드 Mobile phone cover comprising auxiliary battery
KR20160087039A (en) 2015-01-12 2016-07-21 주식회사 아모그린텍 Wireless Power Transmitters and Wireless Charging Device having the Same
KR20160087040A (en) 2015-01-12 2016-07-21 주식회사 아모그린텍 Heat Radiation Unit and Wireless Power Receiving Device Having the Same
US10332672B2 (en) 2015-01-12 2019-06-25 Amogreentech Co., Ltd. Heat radiation unit and wireless power transmitting and receiving device having same
CN112204687A (en) * 2018-05-22 2021-01-08 普莱默股份公司 Inductive energy transmitter/receiver for inductive charger of electric vehicle
CN112204687B (en) * 2018-05-22 2022-11-04 普莱默股份公司 Inductive energy transmitter/receiver for inductive charger of electric vehicle

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