Apparatus for transmitting and receiving wireless power

• US 9,680,335 B2
• Filed: 05/16/2014
• Issued: 06/13/2017
• Est. Priority Date: 12/20/2013
• Status: Active Grant

• Current Assignee: Wit Co., Ltd.
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Lee, Jae Jun, Kang, Joo Rak, Park, Chul Gyun
• Primary Examiner(s): BARNIE, REXFORD N
• Assistant Examiner(s): Tran, Thai
• Application Number:
  US14/280,084
• Publication Number:
  US 20150180284A1
• Time in Patent Office: 1,124 Days
• Field of Search: 307104, 320108
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

Abstract

An apparatus for transmitting and receiving wireless power may include: a transmission module receiving power from an external device to charge a battery; a reception module providing power from the battery to the external device; a switching unit performing switching so as to select the transmission module or the reception module; a switching control unit performing Bluetooth communications with the external device and controlling the switching of the switching unit; and a host control unit creating operating mode information so as to provide the operating mode information to the switching control unit. The switching control unit may perform Bluetooth communications with the external device so that data is transmitted or received depending on the operating mode.

Claims

1. An apparatus for transmitting and receiving wireless power, comprising:

a reception module receiving power from an external device to charge a battery;

a transmission module providing power from the battery to the external device;

a switching unit performing switching so as to select the transmission module or the reception module;

a switching control unit including

a control unit checking the operating mode information received from the host control unit and controlling the switching of the switching unit depending on the operating mode information, and

a Bluetooth module transmitting and receiving data using Bluetooth communications; and

a host control unit creating operating mode information so as to provide the operating mode information to the switching control unit,

wherein the operating mode comprises a transmission mode in which the power is received from the external device to charge the battery and a reception mode in which the power from the battery is provided to the external device,

wherein the switching control unit sets the Bluetooth module to a master mode if the operating mode is the transmission mode or sets the Bluetooth module to a slave mode if the operating mode is the reception mode,

wherein the reception mode and the slave mode are set to be a default mode.

2. The apparatus of claim 1, further comprising a resonant coil unit receiving power from the external device or transmitting power to the external device using magnetic resonance.

3. The apparatus of claim 2, further comprising a matching circuit unit disposed between the switching unit and the resonant coil unit, the matching circuit unit adjusting impedance of the power provided from the resonant coil unit to provide the power to the reception module or adjusting impedance of the power provided from the transmission module to provide the power to the resonant coil unit.

4. The apparatus of claim 1, wherein the reception module receives power from the external device using magnetic resonance, and the transmission module provides power to the external device using magnetic resonance.

5. The apparatus of claim 1, wherein the Bluetooth module provides state information to the external device using

Bluetooth communications in the reception mode and receives state information from the external device using Bluetooth communications in the transmission mode.

6. An apparatus for transmitting and receiving wireless power, comprising:

a host part having a battery therein, setting an operating mode and transmitting or receiving data using Bluetooth communications with an external device depending on the operating mode; and

a wireless power transmission/reception part receiving power from the external device using magnetic resonance to charge the battery if the operating mode is a reception mode and transmitting power from the battery to the external device using magnetic resonance if the operating mode is a transmission mode,

wherein the wireless power transmission/reception part includes;

a resonant coil unit transmitting the power to and receiving the power from an the external device using magnetic resonance;

a reception module receiving the power from the external device using magnetic resonance in the reception mode;

a transmission module providing the power to the external device using magnetic resonance in the transmission mode;

a switching unit performing switching so that the reception module or the transmission module is selected; and

a switching control unit including

a control unit checking the operating mode information received from the host control unit and controlling the switching of the switching unit depending on the operating mode information, and

a Bluetooth module transmitting and receiving data using Bluetooth communications; and

a host control unit creating operating mode information so as to provide the operating mode information to the switching control unit,

wherein the operating mode comprises a transmission mode in which the power is received from the external device to charge the battery and a reception mode in which the power from the battery is provided to the external device,

wherein the switching control unit sets the Bluetooth module to a master mode it the operating mode is the transmission mode or sets the Bluetooth module to a slave mode if the operating mode is the reception mode,

wherein the reception mode and the slave mode are set to be a default mode.

7. The apparatus of claim 6, wherein the Bluetooth module receives state information from the external device using Bluetooth communications if the Bluetooth module is in the master mode and provides state information to the external device using Bluetooth communications if the Bluetooth module is in the slave mode.

8. The apparatus of claim 6, wherein the reception module includes:

a rectifier rectifying the power received from the resonant coil unit; and

a converter unit converting the power provided from the rectifier into an output voltage so as to provide the power to

the battery.

9. The apparatus of claim 6, wherein the transmission module includes an amplifier amplifying the power provided from the battery.

10. The apparatus of claim 6, further comprising a matching circuit unit disposed between the switching unit and the resonant coil unit, the matching circuit unit adjusting impedance of the power provided from the resonant coil unit to provide the power to the reception module or adjusting impedance of the power provided from the transmission module to provide the power to the resonant coil unit.

11. The apparatus of claim 6, wherein the host part includes:

the battery;

a power management module controlling power to be supplied to the battery; and

the host control unit setting the operating mode.