APPARATUS FOR TRANSMITTING AND RECEIVING WIRELESS POWER

• US 20150180284A1
• Filed: 05/16/2014
• Published: 06/25/2015
• Est. Priority Date: 12/20/2013
• Status: Active Grant

• Current Assignee: Wit Co., Ltd.
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: PARK, Chul Gyun, LEE, Jae Jun, KANG, Joo Rak
• Granted Patent: US 9,680,335 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 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,

wherein the switching control unit performs Bluetooth communications with the external device so that data is transmitted or received depending on the operating mode.

2. The apparatus of claim 1, further comprising a resonant coil unit receiving power from an external device or transmitting power to an 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 transmission module receives power from an external device using magnetic resonance, and the reception module provides power to an external device using magnetic resonance.

5. The apparatus of claim 1, wherein the operating mode information indicates a transmission mode in which power is received from an external device to charge the battery or a reception mode in which the power from the battery is provided to an external device.

6. The apparatus of claim 5, wherein the switching control unit includes:

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.

7. The apparatus of claim 6, wherein the Bluetooth module provides state information to an external device using Bluetooth communications in the reception mode and receives state information from an external device using Bluetooth communications in the transmission mode.

15. The apparatus of claim 7, wherein the reception mode is set to be a default mode of the operating mode.

16. The apparatus of claim 7, wherein the host part includes:

the battery;

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

a host control unit setting the operating mode.

8. 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 an operating mode; and

a wireless power transmission/reception part receiving power from an 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.

9. The apparatus of claim 8, wherein the wireless power transmission/reception part includes:

a resonant coil unit transmitting the power to and receiving the power from an 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 controlling switching of the switching unit depending on the operating mode.

10. The apparatus of claim 9, wherein the switching control unit includes:

a Bluetooth module transmitting and receiving data to and from an external device using Bluetooth communications; and

a control unit controlling the switching of the switching unit depending on the operating mode and controlling a mode of the Bluetooth module depending on the operating mode,

wherein the control unit sets the Bluetooth module to a master mode if the operating mode is the transmission mode and sets the Bluetooth module to a slave mode if the operating mode is the reception mode.

11. The apparatus of claim 10, wherein the Bluetooth module receives state information from an external device using Bluetooth communications if the Bluetooth module is in the master mode and provides state information to an external device using Bluetooth communications if the Bluetooth module is in the slave mode.

12. The apparatus of claim 9, 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.

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

14. The apparatus of claim 9, 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.