KR20200069722A - Electronics that are compatible with the wireless charging pad - Google Patents

Electronics that are compatible with the wireless charging pad Download PDF

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KR20200069722A
KR20200069722A KR1020180157090A KR20180157090A KR20200069722A KR 20200069722 A KR20200069722 A KR 20200069722A KR 1020180157090 A KR1020180157090 A KR 1020180157090A KR 20180157090 A KR20180157090 A KR 20180157090A KR 20200069722 A KR20200069722 A KR 20200069722A
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South Korea
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wireless charging
wireless
pad
compatible
charge
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KR1020180157090A
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Korean (ko)
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김선재
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김선재
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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
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • H02J5/005—
    • 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
    • H02J7/025—
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The present invention relates to a wireless charging pad compatible with an electronic product. The present invention solves a problem which charges only one device once compatible with an existing specific smart phone by simultaneously allowing charge/power supply to all electronic devices located at a zone of a wireless charge pad. The wireless charging pad compatible with an electronic product comprises: a wireless charge pad in a wireless charger; a wireless charge pad power supply configured by a general DC cable to supply power of a wireless charge module; a sensor having a circle shape to confirm whether the wireless charge module or a mobile terminal is located at a wireless charge zone; a charge coil having a circle shape to wireless-charge electronic devices located at the wireless charge pad zone by magnetic induction; a controller configured by a small CPU to activate/inactivate a charge coil of a corresponding zone in electronic devices recognized from the sensor; a wireless charge pad to fix the sensor, the charge coil, and the CPU at exact positions and having a size suitable for a desk to be easily bought; a smart phone not to perform an existing wireless charge; a wireless charge module having a circle shape which allows the electronic devices to be compatible with the wireless charge pad; and a wireless charge module power supply including USB-PD, DC, AC power supply to be compatible with almost all electronic devices which are generally used. Therefore, the present invention may solve a problem in which only one device is charged at a time, and a wireless charging pad is compatible with a conventional specific smart phone by simultaneously allowing charge/power supply to all electronic devices located at a zone of a wireless charge pad.

Description

전자제품에 호환되는 무선 충전 패드{Electronics that are compatible with the wireless charging pad}Electronics that are compatible with the wireless charging pad

본 발명은 전자제품에 호환되는 무선 충전 패드에 관한 것으로서,The present invention relates to a wireless charging pad compatible with electronic products,

더욱 상세하게는 무선충전기에 있어서,More specifically, in a wireless charger,

무선충전패드, 무선충전 모듈의 전원을 공급할 수 있게 일반적인 DC 케이블로 구성한 무선충전 패드 전원공급부, 무선충전 모듈 또는 이동단말기 등이 무선충전 영역에 존재하는지 확인 할 수 있게 원형으로 형성한 감지센서, 무선충전 패드 영역에 있는 전자기기들을 자기유도를 통해 무선충전을 시킬 수 있게 원형으로 형성한 충전코일, 감지센서를 통해 인식된 전자 기기들을 해당 영역의 충전코일을 활성화/비활성화 시킬 수 있게 소형 CPU로 구성한 제어부, 감지 센서 및 충전 코일, 제어용 CPU를 정 위치에 고정시키고 판매를 하기 용이 하게 책상에 맞는 사이즈로 형성한 무선 충전 패드, 기존 무선충전이 불가능한 스마트폰, 전자기기들을 무선 충전패드에 호환할 수 있게 원형으로 형성한 무선 충전 모듈, 통상적으로 사용하는 거의 모든 전자기기들에 호환 할 수 있게 USB-PD, DC, AC 전원공급기로 구성한 무선 충전 모듈 전원공급부로 구성 하여서,Wireless charging pad, wireless charging module power supply unit composed of a common DC cable to supply power to the wireless charging module, wireless charging module or mobile terminal, etc. A charging coil formed in a circular shape to enable wireless charging of electronic devices in the charging pad area through magnetic induction, and a small CPU configured to activate/deactivate the charging coil in the corresponding area of electronic devices recognized through the sensing sensor. The wireless charging pad, which is a size suitable for a desk, is easily compatible with existing wireless charging smartphones, electronic devices, and wireless charging pads. It is composed of a wireless charging module formed in a circular shape and a wireless charging module power supply composed of a USB-PD, DC, AC power supply to be compatible with almost all electronic devices commonly used.

무선 충전 패드의 영역에 있는 모든 전자기기들을 동시에 충전/전원 공급이 가능하도록 함을 목적으로 한 것이다.The purpose is to allow all electronic devices in the area of the wireless charging pad to be simultaneously charged/powered.

일반적으로 무선충전기는 사용자가 이동단말기(스마트폰)을 무선충전기를 통해 충전하는 것이다.In general, a wireless charger is for a user to charge a mobile terminal (smartphone) through a wireless charger.

상기한 바와 같이 무선충전기는 근접센서, 광센서, 압력센서, 감지코일, 전원공급부로 구성된 것이다.As described above, the wireless charger is composed of a proximity sensor, an optical sensor, a pressure sensor, a sensing coil, and a power supply.

이상과 같은 무선충전기는 무선충전기에 전원을 공급하고 이동단말기를 충전기 위에 올려 충전하는 것이다.The wireless charger as described above supplies power to the wireless charger and charges the mobile terminal by placing it on the charger.

그러나 상기한 바와 같은 종래의 무선충전기는 특정 스마트폰에서만 호환이 되며 한번에 한대의 기기만 충전되는 문제점이 있었다.However, the conventional wireless charger as described above is only compatible with a specific smartphone, and there is a problem that only one device is charged at a time.

대한민국 특허 공개 제 10-2015-0069254Republic of Korea Patent Publication No. 10-2015-0069254

이에 본 발명은 종래의 무선충전기가 특정 스마트폰에서만 호환이 되며 한번에 한대의 기기만 충전되는 문제점을 해결하기 위한 것이다.Accordingly, the present invention is to solve the problem that the conventional wireless charger is compatible only with a specific smartphone and only one device is charged at a time.

즉, 본 발명은 무선충전패드, 무선충전 모듈의 전원을 공급할 수 있게 일반적인 DC 케이블로 구성한 무선충전 패드 전원공급부, 무선충전 모듈 또는 이동단말기 등이 무선충전 영역에 존재하는지 확인 할 수 있게 원형으로 형성한 감지센서, 무선충전 패드 영역에 있는 전자기기들을 자기유도를 통해 무선충전을 시킬 수 있게 원형으로 형성한 충전코일, 감지센서를 통해 인식된 전자 기기들을 해당 영역의 충전코일을 활성화/비활성화 시킬 수 있게 소형 CPU로 구성한 제어부, 감지 센서 및 충전 코일, 제어용 CPU를 정 위치에 고정시키고 판매를 하기 용이 하게 책상에 맞는 사이즈로 형성한 무선 충전 패드, 기존 무선충전이 불가능한 스마트폰, 전자기기들을 무선 충전패드에 호환할 수 있게 원형으로 형성한 무선 충전 모듈, 통상적으로 사용하는 거의 모든 전자기기들에 호환 할 수 있게 USB-PD, DC, AC 전원공급기로 구성한 무선 충전 모듈 전원공급부로 구성한 것이다.That is, the present invention is a wireless charging pad, a wireless charging pad consisting of a general DC cable to supply power to the wireless charging module, a power supply unit, a wireless charging module or a mobile terminal, etc. are formed in a circular shape to check whether they exist in the wireless charging area A sensing sensor, a charging coil formed in a circular shape to wirelessly charge electronic devices in a wireless charging pad area, and electronic devices recognized through a sensing sensor can activate/deactivate the charging coil in the corresponding area. Wireless charging pad formed with a small CPU, a sensing sensor and charging coil, a CPU for control, and a size suitable for a desk for easy sales and wireless charging of smartphones and electronic devices that cannot be wirelessly charged. It is composed of a wireless charging module formed in a circular shape to be compatible with a pad, and a wireless charging module power supply composed of USB-PD, DC, AC power supplies to be compatible with almost all electronic devices that are commonly used.

따라서 본 발명은 무선충전패드, 무선충전 모듈의 전원을 공급할 수 있게 일반적인 DC 케이블로 구성한 무선충전 패드 전원공급부, 무선충전 모듈 또는 이동단말기 등이 무선충전 영역에 존재하는지 확인 할 수 있게 원형으로 형성한 감지센서, 무선충전 패드 영역에 있는 전자기기들을 자기유도를 통해 무선충전을 시킬 수 있게 원형으로 형성한 충전코일, 감지센서를 통해 인식된 전자 기기들을 해당 영역의 충전코일을 활성화/비활성화 시킬 수 있게 소형 CPU로 구성한 제어부, 감지 센서 및 충전 코일, 제어용 CPU를 정 위치에 고정시키고 판매를 하기 용이 하게 책상에 맞는 사이즈로 형성한 무선 충전 패드, 기존 무선충전이 불가능한 스마트폰, 전자기기들을 무선 충전패드에 호환할 수 있게 원형으로 형성한 무선 충전 모듈, 통상적으로 사용하는 거의 모든 전자기기들에 호환 할 수 있게 USB-PD, DC, AC 전원공급기로 구성한 무선 충전 모듈 전원공급부로 구성 함으로써, 무선 충전 패드의 영역에 있는 모든 전자기기들을 동시에 충전/전원 공급이 가능하도록 한 효과를 갖는 것이다.Therefore, the present invention is a wireless charging pad, a wireless charging pad power supply unit composed of a common DC cable to supply power to the wireless charging module, a wireless charging module or a mobile terminal, etc. are formed in a circular shape to check whether they exist in the wireless charging area. A sensing sensor, a charging coil formed in a circular shape to allow wireless charging of electronic devices in the wireless charging pad area through magnetic induction, and enabling/deactivating the charging coil in the corresponding area of electronic devices recognized through the sensing sensor A wireless charging pad formed with a small CPU, a sensing sensor and charging coil, a control CPU fixed in place, and sized to fit the desk for easy sales, and a wireless charging pad for smartphones and electronic devices that cannot be wirelessly charged. The wireless charging module is composed of a wireless charging module composed of a USB-PD, DC, AC power supply that is compatible with almost all electronic devices that are commonly used, and a wireless charging module that is formed in a circle to be compatible with the wireless charging pad. It has the effect of simultaneously charging/powering all electronic devices in the area of.

도 1: 무선충전 패드(500)에 청구번호 100~400을 탑재한 모습Figure 1: A state in which the charging number 100-400 is mounted on the wireless charging pad 500

도 2: 무선 충전 모듈(600)에 청구번호 700을 탑재한 모습Figure 2: A wireless charging module 600 equipped with a claim number 700

즉, 본 발명은 무선충전패드, 무선충전 모듈의 전원을 공급할 수 있게 일반적인 DC 케이블로 구성한 (100)무선충전 패드 전원공급부, 무선충전 모듈 또는 이동단말기 등이 무선충전 영역에 존재하는지 확인 할 수 있게 원형으로 형성한 (200)감지센서, 무선충전 패드 영역에 있는 전자기기들을 자기유도를 통해 무선충전을 시킬 수 있게 원형으로 형성한 (300)충전코일, 감지센서를 통해 인식된 전자 기기들을 해당 영역의 충전코일을 활성화/비활성화 시킬 수 있게 소형 CPU로 구성한 (400)제어부, 감지 센서 및 충전 코일, 제어용 CPU를 정 위치에 고정시키고 판매를 하기 용이 하게 책상에 맞는 사이즈로 형성한 (500)무선 충전 패드, 기존 무선충전이 불가능한 스마트폰, 전자기기들을 무선 충전패드에 호환할 수 있게 원형으로 형성한 (600)무선 충전 모듈, 통상적으로 사용하는 거의 모든 전자기기들에 호환 할 수 있게 USB-PD, DC, AC 전원공급기로 구성한 (700)무선 충전 모듈 전원공급부로 구성 된 것이다.That is, the present invention enables to check whether the (100) wireless charging pad power supply unit, wireless charging module or mobile terminal, etc., which is composed of a general DC cable to supply power to the wireless charging pad and the wireless charging module, is present in the wireless charging area. (200) detection coils formed in a circular shape, and (300) charging coils formed in a circular shape so that electronic devices in the wireless charging pad area can be wirelessly charged through magnetic induction. (500) wireless charging with a control unit configured with a small CPU to enable/disable the charging coil of the controller, a sensing sensor and charging coil, and a control CPU in place and sized to fit the desk for easy sales. (600) Wireless charging module, which is formed in a circular shape to be compatible with wireless charging pads, pads, smartphones that cannot be wirelessly charged, USB-PD, to be compatible with almost all electronic devices that are commonly used. It consists of a (700) wireless charging module power supply configured with DC and AC power supplies.

여기서, (400)제어부는 감지센서를 통해 인식된 전자 기기들을 해당 영역의 충전코일을 활성화/비활성화 시킬 수 있게 소형 CPU로 구성한 것이다.Here, the (400) control unit is configured with a small CPU to enable/disable the charging coil of the corresponding area of the electronic devices recognized through the detection sensor.

여기서, (500)무선 충전 패드는 감지 센서 및 충전 코일, 제어용 CPU를 정 위치에 고정시키고 판매를 하기 용이 하게 책상에 맞는 사이즈로 형성한 것이다.Here, the (500) wireless charging pad is formed in a size suitable for a desk to fix the sensor, the charging coil, and the control CPU in place and facilitate sales.

여기서, (600)무선 충전 모듈은 기존 무선충전이 불가능한 스마트폰, 전자기기들을 무선 충전패드에 호환할 수 있게 원형으로 형성한 것이다.Here, the (600) wireless charging module is formed in a circular shape to be compatible with wireless charging pads of smartphones and electronic devices that cannot be wirelessly charged.

이하, 본 발명의 사용과정에 대하여 설명하면 다음과 같다.Hereinafter, the use process of the present invention will be described.

상기한 바와 같이 본 발명은 무선충전기에 있어서 무선충전패드, 무선충전 모듈의 전원을 공급할 수 있게 일반적인 DC 케이블로 구성한 (100)무선충전 패드 전원공급부, 무선충전 모듈 또는 이동단말기 등이 무선충전 영역에 존재하는지 확인 할 수 있게 원형으로 형성한 (200)감지센서, 무선충전 패드 영역에 있는 전자기기들을 자기유도를 통해 무선충전을 시킬 수 있게 원형으로 형성한 (300)충전코일, 감지센서를 통해 인식된 전자 기기들을 해당 영역의 충전코일을 활성화/비활성화 시킬 수 있게 소형 CPU로 구성한 (400)제어부, 감지 센서 및 충전 코일, 제어용 CPU를 정 위치에 고정시키고 판매를 하기 용이 하게 책상에 맞는 사이즈로 형성한 (500)무선 충전 패드, 기존 무선충전이 불가능한 스마트폰, 전자기기들을 무선 충전패드에 호환할 수 있게 원형으로 형성한 (600)무선 충전 모듈, 통상적으로 사용하는 거의 모든 전자기기들에 호환 할 수 있게 USB-PD, DC, AC 전원공급기로 구성한 (700)무선 충전 모듈 전원공급부로 구성된 본 발명을 적용하여 실시하게 되면, 특정 스마트폰에서만 호환이 되며 한번에 한대의 기기만 충전되는 문제점을 해소하도록 한 것이다.As described above, the present invention provides a wireless charging pad, a wireless charging module or a mobile terminal, etc. in a wireless charging area comprising a (100) wireless charging pad configured with a general DC cable to supply power to a wireless charging pad and a wireless charging module. (200) detection sensors formed in a circle to check if they exist, and (300) charging coils formed in a circle to wirelessly charge electronic devices in the wireless charging pad area through magnetic induction. (400) control unit consisting of a small CPU to enable/disable the charging coils in the corresponding area of the electronic devices, the sensing sensor and charging coil, and the CPU for control are fixed in place and easily sized to fit the desk for sale. One (500) wireless charging pad, a smartphone that cannot be used for existing wireless charging, and a (600) wireless charging module that is formed in a circular shape so that electronic devices can be compatible with the wireless charging pad, is compatible with almost all electronic devices that are commonly used. When implemented by applying the present invention consisting of a (700) wireless charging module power supply consisting of a USB-PD, DC, AC power supply, it is compatible only with a specific smartphone and solves the problem of charging only one device at a time. Did.

또한 본 발명의 실시에 있어, 소형 CPU로 구성한 (400)제어부로 구성한 본 발명을 적용하여 실시하게 되면, 감지센서를 통해 인식된 전자 기기들을 해당 영역의 충전코일을 활성화/비활성화 시킬 수 있게 될 것이다.In addition, in the implementation of the present invention, if the present invention is implemented by using a (400) control unit composed of a small CPU, it will be possible to activate/deactivate the charging coil of the corresponding area of electronic devices recognized through the detection sensor. .

또한 본 발명의 실시에 있어, 책상에 맞는 사이즈로 형성한 (500)무선 충전 패드로 구성한 본 발명을 적용하여 실시하게 되면, 감지 센서 및 충전 코일, 제어용 CPU를 정 위치에 고정시키고 판매를 하기 용이 하게 될 것이다.In addition, in the practice of the present invention, when applying and implementing the present invention consisting of a (500) wireless charging pad formed to a size suitable for a desk, it is easy to fix the detection sensor, charging coil, and control CPU in place and to sell them. Will do.

또한 본 발명의 실시에 있어, 원형으로 형성한 (600)무선 충전 모듈으로 구성한 본 발명을 적용하여 실시하게 되면, 기존 무선충전이 불가능한 스마트폰, 전자기기들을 무선 충전패드에 호환할 수 있게 될 것이다.In addition, in the practice of the present invention, if the present invention constituted by a circularly formed (600) wireless charging module is applied and implemented, it will be possible to make compatible with wireless charging pads for smartphones and electronic devices that cannot be wirelessly charged. .

100: 무선충전 패드 전원공급부, 200: 감지센서, 300: 충전코일, 400: 제어부, 500: 무선 충전 패드, 600: 무선 충전 모듈, 700: 무선 충전 모듈 전원공급부100: wireless charging pad power supply, 200: detection sensor, 300: charging coil, 400: control unit, 500: wireless charging pad, 600: wireless charging module, 700: wireless charging module power supply

Claims (4)

무선충전기에 있어서,
무선충전패드, 무선충전 모듈의 전원을 공급할 수 있게 일반적인 DC 케이블로 구성한 (100)무선충전 패드 전원공급부, 무선충전 모듈 또는 이동단말기 등이 무선충전 영역에 존재하는지 확인 할 수 있게 원형으로 형성한 (200)감지센서, 무선충전 패드 영역에 있는 전자기기들을 자기유도를 통해 무선충전을 시킬 수 있게 원형으로 형성한 (300)충전코일, 감지센서를 통해 인식된 전자 기기들을 해당 영역의 충전코일을 활성화/비활성화 시킬 수 있게 소형 CPU로 구성한 (400)제어부, 감지 센서 및 충전 코일, 제어용 CPU를 정 위치에 고정시키고 판매를 하기 용이 하게 책상에 맞는 사이즈로 형성한 (500)무선 충전 패드, 기존 무선충전이 불가능한 스마트폰, 전자기기들을 무선 충전패드에 호환할 수 있게 원형으로 형성한 (600)무선 충전 모듈, 통상적으로 사용하는 거의 모든 전자기기들에 호환 할 수 있게 USB-PD, DC, AC 전원공급기로 구성한 (700)무선 충전 모듈 전원공급부로 구성 된 것을 특징으로 하는 전자제품에 호환되는 무선 충전 패드.In the wireless charger,
(100) Wireless charging pad power supply unit, wireless charging module or mobile terminal, which is composed of a general DC cable to supply the power of the wireless charging pad and the wireless charging module, is formed in a circular shape so that it can be checked in the wireless charging area ( 200) Detection sensor, wireless charging pad (300) Charging coil formed in a circular shape to enable wireless charging through magnetic induction, and electronic devices recognized through the sensing sensor activate the charging coil in the area / (400) wireless charging pad, which is configured with a small CPU (400) control unit, a sensing sensor and charging coil, and a control CPU in place to make it inactive and easy to sell (500). (600) Wireless charging module, which is formed in a circular shape to make these impossible smartphones and electronic devices compatible with wireless charging pads, USB-PD, DC, AC power supply to be compatible with almost all electronic devices A wireless charging pad compatible with electronic products, characterized by comprising a (700) wireless charging module power supply. 제 1항에 있어서,
(400)제어부를 통하여 감지센서를 통해 인식된 전자 기기들을 해당 영역의 충전코일을 활성화/비활성화 시킬 수 있게 소형 CPU로 구성함을 특징으로 하는 전자제품에 호환되는 무선 충전 패드.According to claim 1,
(400) A wireless charging pad compatible with electronic products characterized in that the electronic devices recognized through the sensor are configured with a small CPU to activate/deactivate the charging coil in the corresponding area. 제 1항에 있어서,
(500)무선 충전 패드를 통하여 감지 센서 및 충전 코일, 제어용 CPU를 정 위치에 고정시키고 판매를 하기 용이 하게 책상에 맞는 사이즈로 형성함을 특징으로 하는 전자제품에 호환되는 무선 충전 패드.According to claim 1,
(500) A wireless charging pad compatible with electronic products, characterized in that the sensing sensor, charging coil, and control CPU are fixed in place through a wireless charging pad and formed into a size suitable for a desk for easy sales. 제 1항에 있어서,
(600)무선 충전 모듈을 통하여 기존 무선충전이 불가능한 스마트폰, 전자기기들을 무선 충전패드에 호환할 수 있게 원형으로 형성함을 특징으로 하는 전자제품에 호환되는 무선 충전 패드.According to claim 1,
(600) A wireless charging pad compatible with electronic products, characterized in that a wireless charging module is formed in a circular shape to be compatible with a wireless charging pad for smartphones and electronic devices that cannot be wirelessly charged.
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Citations (1)

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Publication number Priority date Publication date Assignee Title
KR20150069254A (en) 2013-12-13 2015-06-23 엘지전자 주식회사 Mobile terminal wireless charger

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150069254A (en) 2013-12-13 2015-06-23 엘지전자 주식회사 Mobile terminal wireless charger

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