WO2017086628A1 - Appareil de commande de communication en champ proche et de charge sans fil à antenne unique et terminal utilisateur associé - Google Patents

Appareil de commande de communication en champ proche et de charge sans fil à antenne unique et terminal utilisateur associé Download PDF

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Publication number
WO2017086628A1
WO2017086628A1 PCT/KR2016/012418 KR2016012418W WO2017086628A1 WO 2017086628 A1 WO2017086628 A1 WO 2017086628A1 KR 2016012418 W KR2016012418 W KR 2016012418W WO 2017086628 A1 WO2017086628 A1 WO 2017086628A1
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WO
WIPO (PCT)
Prior art keywords
range communication
switch
short
frequency
wireless charging
Prior art date
Application number
PCT/KR2016/012418
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English (en)
Korean (ko)
Inventor
황종태
진기웅
박성민
고민정
이동수
이종훈
신현익
이준
Original Assignee
주식회사 맵스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020150174283A external-priority patent/KR101743631B1/ko
Application filed by 주식회사 맵스 filed Critical 주식회사 맵스
Priority to US15/769,955 priority Critical patent/US10236941B2/en
Priority to CN201680064102.7A priority patent/CN108352862A/zh
Publication of WO2017086628A1 publication Critical patent/WO2017086628A1/fr

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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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
    • H04B5/48—Transceivers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to wireless charging and short-range wireless communication technology.
  • Radio frequency identification RFID
  • NFC near field communication
  • A4WP The Alliance for Wireless Power (A4WP, hereinafter referred to as A4WP) method is a representative magnetic resonance wireless power transmission standard and uses 6.78MHz ISM frequency band, which is half of the NFC module's ISM frequency band (13.56MHz). do.
  • A4WP antenna is required to receive A4WP power, and the resonator configured with the A4WP antenna is set to resonate at 6.78MHz frequency.
  • the NFC module communicates using an ISM band of 13.56 MHz, and an NFC antenna for wireless communication and a resonator for generating resonance at 13.56 MHz are required.
  • a single antenna-based wireless charging and short-range communication control device capable of wireless charging and short-range communication using a single antenna and a user terminal thereof are proposed.
  • the single antenna based wireless charging and short-range communication control apparatus detects a resonant frequency from a rectifier input signal of a power receiver and determines whether the detected resonant frequency is a first frequency for wireless charging using a single antenna. And a switch controller for generating a control signal by determining whether the second frequency is for short-range communication, and a switch turned on or off for wireless charging or short-range communication according to a control signal received from the switch controller.
  • the switch control unit when the detected resonant frequency is the first frequency, determines that the wireless charging is possible, generates a high level driving signal, and cuts off power supply to the short-range communication module as the switch is turned on.
  • the short range communication module is protected, and if the detected resonant frequency is the second frequency, the short range communication module is determined to generate a low level driving signal and the switch is turned off to operate the short range communication module.
  • the power receiver transmits and receives a wireless power signal using a power transmitter and an Alliance for Wireless Power (A4WP) scheme.
  • Short-range communication according to an embodiment is near field communication (Near Field Communication (NFC) or radio frequency identification (RFID) communication.
  • NFC Near Field Communication
  • RFID radio frequency identification
  • the first frequency for wireless charging is 6.78 MHz
  • the second frequency for short range communication is 13.56 MHz.
  • a source is connected to a ground voltage
  • a drain is connected to a short range communication module
  • a driving voltage is input from a switch controller to a gate.
  • a switch includes a first switch having a source connected to a first ground voltage, a drain connected to a short range communication module, a first driving voltage input from a switch controller to a gate, and a source connected to a second ground voltage.
  • a drain connected to the short range communication module and having a second driving voltage input to the gate from the switch control unit.
  • the short range communication module receives the differential input signal and the switch control unit receives the differential input signal.
  • a user terminal includes a resonator including a single antenna for wireless power signal reception and short-range communication, a power receiver for receiving a wireless power signal using a first frequency signal resonated by the resonator, and a resonator
  • a short range communication module for wireless communication using a second frequency signal resonated by the second frequency signal, a resonant frequency detected from a rectifier input signal of a power receiver, and whether the detected resonant frequency is a first frequency or a second frequency to determine a control signal. It generates a switch control unit and a switch that is turned on or off for wireless charging or short-range communication in accordance with the control signal received from the switch control unit.
  • a resonator may include a resonant tank in which a first capacitor and a second capacitor are added to an antenna and a third capacitor connected in series, and the first capacitor is connected in series with the second capacitor and is connected to the antenna.
  • the second capacitor is connected in series with the first capacitor and in parallel with the antenna, the connecting node between the first capacitor and the antenna is connected to the ground voltage, and the connecting node between the second capacitor and the first capacitor.
  • the connection node is connected to the input of the power receiver, and the connection node between the third capacitor and the switch is connected to the input of the short range communication module.
  • the switch control unit when the detected resonant frequency is the first frequency, determines that the wireless charging is possible, generates a high level driving signal, and cuts off power supply to the short-range communication module as the switch is turned on.
  • the short range communication module is protected, and if the detected resonant frequency is the second frequency, the short range communication module is determined to generate a low level driving signal and the switch is turned off to operate the short range communication module.
  • wireless charging and short range wireless communication are possible using a single antenna. Furthermore, when a large amount of power is supplied from the power transmitter to the wireless receiver for wireless charging, the short-range communication module is blocked by excessive power by preventing excessive power from being supplied to the short-range communication module configured to transmit and receive low power. It can prevent and protect the near field communication module.
  • FIG. 1 is a circuit diagram of a resonator according to an embodiment of the present invention.
  • FIG. 3 is a circuit diagram when an A4WP PRU operates according to a switch on according to an embodiment of the present invention
  • FIG. 4 is a circuit diagram of a user terminal capable of operating an NFC module and an A4WP PRU as a single antenna according to an embodiment of the present invention
  • FIG. 5 is a waveform diagram that simulates the situation that the NFC module operates by receiving the energy transmitted by the NFC transmitter according to an embodiment of the present invention
  • FIG. 6 is a waveform diagram that simulates a situation in which the A4WP PRU operates by receiving energy transmitted by the A4WP PTU according to an embodiment of the present invention
  • FIG. 7 is a circuit diagram of a resonator according to another embodiment of the present invention.
  • FIG. 8 is a circuit diagram of a user terminal capable of operating an NFC module and an A4WP PRU with a single antenna according to another embodiment of the present invention.
  • the present invention is a short-range wireless communication with a power receiver (PRU, PRU) for receiving power from a power transmitter (PTU, hereinafter called PTU) for wireless charging using a single antenna. It is a control technology for implementing both short-range communication module to perform the. At this time, when power is supplied from the PTU for wireless charging, the short-range communication module is protected by blocking the power signal from being supplied to the short-range communication module.
  • the short-range communication module uses a magnetic field such as a near field communication (NFC) module or a radio frequency identification (RFID) module. It may be any communication module that transmits and receives radio signals.
  • the short range communication module performs short range wireless communication in the frequency band of several to several tens of MHz.
  • the NFC module may transmit and receive a wireless signal in the 13.56 MHz frequency band.
  • the PTU and the PRU use an Alliance for Wireless Power (A4WP, hereinafter A4WP) scheme.
  • A4WP Alliance for Wireless Power
  • the A4WP PTU supplies a power signal to the A4WP PRU through magnetic resonance in the 6.78 MHz frequency band.
  • the wireless charging method is not limited to the A4WP method.
  • Qi Qi method
  • PMA Power Matters Alliance
  • WPC Wireless Power Consortium
  • the wireless charging is performed in a different frequency band from the short range wireless communication, but does not follow the A4WP method, for example, even when performing wireless charging at 4 MHz, the NFC module of the 13.56 MHz frequency band or the short range of other similar frequency bands is used.
  • the communication module can be protected.
  • the short range communication module is limited to the NFC module
  • the power transmitter is limited to the A4WP PTU
  • the power receiver is described as limited to the A4WP PRU, but is not limited thereto.
  • FIG. 1 is a circuit diagram of a resonator according to an embodiment of the present invention.
  • the resonator 10 includes a resonance tank in which a first capacitor Ca 101 and a second capacitor Cb 102 are added to an antenna 100 and a third capacitor Cc 103 connected in series. tank).
  • the first capacitor Ca 101 is connected in series with the second capacitor Cb 102 and connected in parallel with the antenna 100.
  • the second capacitor Cb 102 is connected in series with the first capacitor Ca 101 and is connected in parallel with the antenna 100.
  • the antenna 100 is a single antenna and supports both A4WP wireless charging mode and short-range communication mode.
  • the A4WP PRU may receive a wireless power signal from the A4WP PTU through magnetic resonance of the resonator 10 including the antenna 100.
  • the NFC module may wirelessly communicate with the other party's NFC module using the magnetic field of the resonator 10 including the antenna 100.
  • the switch SW 107 has a source connected to the ground voltage 108, a drain connected to the third capacitor Cc 103, and a driving voltage Vdrv is input to the gate.
  • the switch SW 107 is turned on when the driving voltage Vdrv is equal to or greater than the preset threshold voltage, and turned off when it is less than or equal to the threshold voltage.
  • node 104 is used as the input of the NFC module
  • node 105 is used as the input of the A4WP PRU
  • node 106 is connected to the ground voltage.
  • FIG. 2 is a circuit diagram when the NFC module operating according to the switch off according to an embodiment of the present invention.
  • the rectifier 121 is connected to the output of the resonator 10 to receive an AC input voltage IN_A4WP 200 and output a DC output voltage VRECT_A4WP.
  • the rectifier 121 includes at least one diode, for example, as shown in FIG. 2, the diodes D1 and D2 121-1 and 121-2.
  • Rectifier capacitor CRECT 123 smoothes rectifier output voltage VRECT_A4WP.
  • the rectifier output voltage VRECT_A4WP allows a constant voltage to be supplied to the load through the power converter 125.
  • the power converter 125 may be a DC-DC converter, a low drop-out regulator (LDO), or the like.
  • the A4WP input voltage IN_A4WP 200 becomes 5V or less.
  • the A4WP PRU 12 is set to operate when the rectifier output voltage VRECT_A4WP is 5V or more. This is because the rectifier output voltage VRECT_A4WP is supplied to the terminal for charging the battery and the battery voltage is more than 3V. Therefore, the rectifier output voltage VRECT_A4WP should be at least sufficiently higher than the battery voltage. Therefore, in the case of FIG.
  • the A4WP PRU 12 may not operate normally. Therefore, there is almost no current flowing into the A4WP input voltage IN_A4WP 200. At this time, if the inductance of the antenna 100 is L, the resonant frequency of the resonator 10 is determined as in Equation (1).
  • FIG. 3 is a circuit diagram when an A4WP PRU operates according to a switch on according to an embodiment of the present invention.
  • the switch SW 107 when the driving voltage Vdrv of the switch SW 107 is equal to or higher than the threshold voltage, the switch SW 107 is turned on, and the A4WP PRU 12 is operated as shown in FIG. 3. .
  • the NFC input voltage IN_NFC 210 is substantially equal to the ground voltage by the switch SW 107, the input signal of the NFC module 14 disappears, so that the NFC module 14 does not operate naturally. Therefore, the phenomenon that the energy received by the antenna 100 during the operation of the A4WP PRU 12 destroys the NFC module 14 is naturally solved.
  • the switch SW 107 since the voltage swing of the NFC input voltage IN_NFC 210 is low, the switch SW 107 may use a low voltage element within 5V.
  • the resonant frequency of the resonator 10 is determined by Equation 2.
  • the resonance frequency When operating with the A4WP PRU 12, the resonance frequency should be 2 times lower than the NFC frequency, so that Equation 3 below should be satisfied.
  • Equation 4 If it is assumed that the capacitor Ca (101) is n times larger than the capacitor Cb (102), a condition as shown in Equation 4 can be obtained.
  • NFC module When operating as an A4WP PRU 12, it prevents excessive power from being supplied to the NFC module configured to transmit and receive low power, thereby preventing the NFC module from being destroyed by excessive power supplied to the A4WP PRU 12. NFC module can be protected.
  • FIG. 4 is a circuit diagram of a user terminal capable of operating an NFC module and an A4WP PRU with a single antenna according to an embodiment of the present invention.
  • the user terminal includes a resonator including a single antenna 100, an A4WP PRU 12, and an NFC module 14.
  • the A4WP PRU 12 includes a rectifier 121, a power converter 125, and a wireless charging and near field communication controller.
  • Wireless charging and short-range communication control device includes a switch control unit 126 and the switch SW (107).
  • the user terminal may be a portable terminal that the user can carry, such as a smartphone.
  • the single antenna 100 is capable of receiving a wireless power signal and short-range communication.
  • the A4WP PRU 12 receives the A4WP PTU and the wireless power signal using the first resonant frequency resonated by the resonator 10 including the antenna 100.
  • the NFC module 14 wirelessly communicates with the other party's NFC module using a second resonant frequency resonated by the resonator 10 including the antenna 100.
  • the switch controller 126 detects the resonance frequency from the A4WP input voltage IN_A4WP 200 and determines whether the detected resonance frequency is a first frequency or a second frequency to generate a control signal.
  • the switch SW 107 is turned on or off to operate in the wireless charging mode or the short-range communication mode according to the control signal received from the switch controller 126.
  • the switch controller 126 receives the A4WP input voltage IN_A4WP 200 and determines that the wireless charging is possible when the resonance frequency is 6.78 MHz to generate a high level driving voltage Vdrv to turn on the switch SW 107. By protecting the NFC module 14 by blocking the power is supplied to the NFC module (14). In contrast, when the A4WP input voltage IN_A4WP 200 is 13.56 MHz, the NFC module 14 is operated by turning off the switch SW 107 by generating a low level driving voltage Vdrv by determining that the short-range communication is possible.
  • the switch SW 107 uses a MOSFET element
  • an electrically controllable switch element for example, a relay composed of an electromagnet including a BJT, GaN, and SiC element, a MEMS switch, and the like can also be used.
  • FIG. 5 is a waveform diagram simulating a situation in which an NFC module operates by receiving energy transmitted from an NFC transmitter according to an exemplary embodiment of the present invention.
  • the NFC transmitter supplies energy at 13.56 MHz, and receives energy from the antenna of the terminal to supply energy to the NFC module 14.
  • the voltage swing of the NFC input voltage IN_NFC 210 approaches 7 Vpeak, but the A4WP input voltage IN_A4WP 200 is only about 500 mV. Therefore, since the A4WP PRU 12 does not operate naturally, most of the energy of the antenna is supplied to the NFC module 14.
  • FIG. 6 is a waveform diagram simulating a situation in which an A4WP PRU operates by receiving energy transmitted by the A4WP PTU according to an embodiment of the present invention.
  • FIG. 7 is a circuit diagram of a resonator according to another embodiment of the present invention.
  • the resonator described above with reference to FIG. 1 is suitable for the case where there is one input. If the input requires two in differential form, one can use a resonator as shown in FIG. When the user terminal is configured using this, it is as shown in FIG.
  • the resonator includes an antenna 100, a first capacitor Ca 101, a second capacitor Cb1, Cb2 102-1, 102-2, and a third capacitor Cc1, Cc2 (103-1, 103-2). do.
  • a source is connected to the first ground voltage 108-1
  • a drain is connected to the third capacitor Cc1 103-1
  • a first driving voltage Vdrv1 is input to the gate.
  • the first switch SW 107-1 is turned on when the first driving voltage Vdrv1 is equal to or greater than a preset threshold voltage, and turned off when the first driving voltage Vdrv1 is equal to or more than a preset threshold voltage.
  • a source is connected to the second ground voltage 108-2, a drain is connected to the third capacitor Cc 2 103-2, and a second driving voltage Vdrv2 is input to the gate.
  • the second switch SW 107-2 is turned on when the second driving voltage Vdrv2 is equal to or greater than the preset threshold voltage, and turned off when the second driving voltage Vdrv2 is equal to or less than the preset threshold voltage.
  • node 104 is used as an input of the NFC module
  • node 105 is used as an input of the A4WP PRU
  • node 106 is used as an input of the A4WP PRU.
  • Node 110 is connected to second switch SW 107-2.
  • FIG. 8 is a circuit diagram of a user terminal capable of operating an NFC module and an A4WP PRU with a single antenna according to another embodiment of the present invention.
  • the NFC module 14 and the A4WP PRU 12 are implemented using a resonator suitable for a differential structure.
  • Equation 6 The resonance frequency when the user terminal operates as the A4WP PRU 12 is expressed by Equation 6.
  • the A4WP PRU 12 includes a rectifier 121, a power converter 125, and a switch controller 126.
  • the rectifier 121 includes at least one diode, for example, the diodes D1, D2, D3, and D4 (121-1, 121-2, 121-3, 121-4) as shown in FIG.
  • Rectifier capacitor CRECT 123 smoothes rectifier output voltage VRECT_A4WP.
  • the rectifier output voltage VRECT_A4WP allows a constant voltage to be supplied to the load through the power converter 125.
  • the power converter 125 may be a DC-DC converter, a low drop-out regulator (LDO), or the like.
  • the first switch SW1 107-1 has a source connected to the first ground voltage 108-1, a drain connected to the NFC module 14, and a first driving voltage Vdrv1 is input to the gate from the switch controller 126.
  • the second switch SW2 107-2 has a source connected to the second ground voltage 108-2, a drain connected to the NFC module 14, and a second driving voltage Vdrv2 is input to the gate from the switch controller 126.
  • the NFC module 14 receives the differential NFC input signals IN_NFC + and IN_NFC-, and the switch controller 126 receives the differential A4WP input signals IN_A4WP + and IN_A4WP-.
  • first switch SW1 107-1 and the second switch SW2 107-2 use MOSFET devices, relays composed of electromagnets including electrically controllable switch devices, for example, BJT, GaN, and SiC devices. Also, all MEMS switches can be used.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

La présente invention concerne un appareil de commande de communication en champ proche et de charge sans fil à antenne unique et un terminal utilisateur associé. Un appareil de commande de communication en champ proche et de charge sans fil à antenne unique selon un mode de réalisation comprend : une unité de commande de commutation pour détecter une fréquence de résonance en provenance d'un signal d'entrée d'un redresseur dans un récepteur de puissance et pour déterminer si la fréquence de résonance détectée est une première fréquence de charge sans fil à l'aide d'une antenne unique ou bien une seconde fréquence de communication en champ proche à l'aide d'une antenne unique, afin de générer un signal de commande; et un commutateur qui est activé/désactivé pour la charge sans fil ou pour la communication en champ proche en fonction du signal de commande reçu de l'unité de commande de commutation.
PCT/KR2016/012418 2015-11-16 2016-11-01 Appareil de commande de communication en champ proche et de charge sans fil à antenne unique et terminal utilisateur associé WO2017086628A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US15/769,955 US10236941B2 (en) 2015-11-16 2016-11-01 Single antenna-based wireless charging and near-field communication control apparatus and user terminal therefor
CN201680064102.7A CN108352862A (zh) 2015-11-16 2016-11-01 基于单天线的无线充电和近场通信控制装置及其用户终端

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2015-0160684 2015-11-16
KR20150160684 2015-11-16
KR1020150174283A KR101743631B1 (ko) 2015-11-16 2015-12-08 단일 안테나 기반 무선충전 및 근거리 통신 제어장치 및 그 사용자 단말
KR10-2015-0174283 2015-12-08

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CN109787366A (zh) * 2017-11-15 2019-05-21 Gtx医疗有限公司 医疗通信和充电系统
WO2021060760A1 (fr) * 2019-09-24 2021-04-01 Samsung Electronics Co., Ltd. Dispositif électronique pour utiliser sélectivement des bobines prenant en charge un partage de puissance

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KR20120128546A (ko) * 2011-05-17 2012-11-27 삼성전자주식회사 근거리 무선 통신 및 무선 전력 전송을 사용하기 위한 장치 및 방법
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109787366A (zh) * 2017-11-15 2019-05-21 Gtx医疗有限公司 医疗通信和充电系统
WO2021060760A1 (fr) * 2019-09-24 2021-04-01 Samsung Electronics Co., Ltd. Dispositif électronique pour utiliser sélectivement des bobines prenant en charge un partage de puissance
US11599866B2 (en) 2019-09-24 2023-03-07 Samsung Electronics Co., Ltd. Electronic device for selectively using coils supporting power sharing

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