SYSTEM FOR TRANSMITTING ULTRASONIC SHORT-RANGE WIRELESS POWER AND METHOD OF CHARGING ULTRASONIC WIRELESS POWER

• US 20190157911A1
• Filed: 01/03/2019
• Published: 05/23/2019
• Est. Priority Date: 06/13/2014
• Status: Active Grant

• Current Assignee: Seong Hoon Park
• Original Assignee: Seong Hoon Park
• Inventors: PARK, Seong Hoon
• Granted Patent: US 10,554,079 B2
• Time in Patent Office: Days
• CPC Class Codes: H02J 50/15 using ultrasonic waves
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 40/12 characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment

Abstract

Disclosed is an ultrasonic short-range wireless power transmission system comprising: an ultrasonic transmission transducer configured to transmit power, wherein the ultrasonic transmission transducer comprises: a converter configured to convert power received from an external power source; a controller configured to control power of a modulator and power of an amplifier; a communication unit configured to communicate with an external reception transducer; a sensor configured to sense ultrasonic waves transferred from an ultrasonic wave emission region; the modulator electrically connected to the controller and configured to generate a signal for ultrasonic short-range wireless power transmission; and the amplifier configured to amplify a modulation signal generated by the modulator and convert the modulation signal into power; and one or more transmission modules configured to receive the power from the amplifier and convert an electrical reception signal into ultrasonic waves.

Claims

1. An ultrasonic wireless power charging method performed by a transmission device and a reception device, comprising:

sensing a transmission device and a reception device which are within a range using signals generated by a communication unit of the transmission device and a communication unit of the reception device;

transmitting a sensed signal of the transmission device to the reception device;

transmitting a response signal of the reception device to the transmission device;

forming a resonance frequency to match resonance frequencies of the transmission device and the reception device;

receiving and recognizing a charged-state signal of the reception device by the transmission device; and

charging a capacitor included in the reception device by receiving power transmitted using the resonance frequency of the transmission device.

2. The ultrasonic wireless power charging method of claim 1, wherein the forming of the resonance frequency comprises matching the resonance frequencies of the transmission device and the reception device by adjusting the resonance frequencies according to a type or load factor of the reception device on the basis of a signal received via the communication unit.

3. The ultrasonic wireless power charging method of claim 1, wherein, when the transmission device or the reception device is not sensed, a standby state is switched to by controlling an amount of power of the transmission device or the reception device.

4. The ultrasonic wireless power charging method of claim 1, wherein the reception device further comprises a display unit configured to control a charge state, and

the display unit displays a full-charge indicator, a low-voltage indicator, or a charged amount display indicator.

5. The ultrasonic wireless power charging method of claim 1, wherein the communication unit of the transmission device receives and stores a charge state, an amount of charged power, a currently charged state of the reception device, a number of reception devices, or a location of the reception devices.

6. The ultrasonic wireless power charging method of claim 1, wherein the response signal of the reception device comprises a unique ID individually assigned to the reception device.

7. The ultrasonic wireless power charging method of claim 1, wherein the transmission device determines an amount of a transferred ultrasonic signal, and blocks power thereof or controls an amount of the power thereof.

8. The ultrasonic wireless power charging method of claim 1, wherein a frequency band of the transmission device comprises a resonance frequency for supplying power to the reception device.

9. The ultrasonic wireless power charging method of claim 1, wherein a frequency band of the reception device is formed to be in resonance frequency band for receiving power transmitted from the transmission device.

10. The ultrasonic wireless power charging method of claim 1, further comprising transmitting a charging completion signal or a block signal to the transmission device when charging of the capacitor is completed and/or a temperature of the capacitor is above or below an allowance range.

11. The ultrasonic wireless power charging method of claim 1, wherein the communication unit of the transmission device and/or the communication unit of the reception device comprises one of a wideband, Wifi, Bluetooth, Zigbee, near-field communication (NFC), infrared data association (IRDA), Beacon, a UWB, long-term evolution (LTE), and LTE-A.

12. The ultrasonic wireless power charging method of claim 1, further comprising performing user authentication through an external server via the communication unit of the transmission device and/or the communication unit of the reception device.

13. The ultrasonic wireless power charging method of claim 12, wherein the performing of the user authentication through the external server comprises:

transmitting authentication data of the reception device to the external server or the transmission device;

determining the authentication data of the reception device by transmitting the authentication data to the external server;

transmitting a result of determining the authentication data to the transmission device and/or the reception device from the external server; and

receiving the authentication data from the external server by the transmission device and/or the reception device.

14. The ultrasonic wireless power charging method of claim 12, further comprising:

receiving text and/or voice related to the authentication determined on the basis of the user authentication from the external server; and

determining whether the capacitor included in the reception device is chargeable by determining the authentication

15. The ultrasonic wireless power charging method of claim 12, wherein the performing of the authentication through the external server comprises at least one of:

unique ID information of the reception device;

user information; and

user subscription information.

16. The ultrasonic wireless power charging method of claim 1, further comprising performing updating, by the communication unit of the transmission device and/or the communication device of the reception device, by downloading latest version basic information by comparing the basic information with an update history stored in the external server.

17. The ultrasonic wireless power charging method of claim 12, wherein the external server stores usage record information, user information, user subscription information (user authentication), payment information, an update history, and unique ID information of the transmission device and/or the reception device, and performs payment (calculates a power consumption rate) by inquiring whether a payment process is to be performed and making a response through a payment means registered beforehand on the basis of a power consumption rate and usage record information of the transmission device and/or the reception device.

18. The ultrasonic wireless power charging method of claim 17, wherein at least one among the usage record information, the user information, the user subscription information (user authentication), the payment information, the update history, and the unique ID information stored in the external server is transmitted to the transmission device or the reception device after being encrypted.