CONTACTLESS POWER RECEPTION DEVICE AND RECEPTION METHOD

• US 20170201128A1
• Filed: 05/26/2015
• Published: 07/13/2017
• Est. Priority Date: 05/26/2014
• Status: Active Grant

• Current Assignee: GE Hybrid Technologies, LLC (General Electric Company)
• Original Assignee: Hanrim Postech Co., Ltd.
• Inventors: JUNG, Chun-Kil, KIM, Hak Do, NOH, Sang Youn
• Granted Patent: US 10,615,644 B2
• Time in Patent Office: Days
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• 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 24/08 Testing, supervising or monitoring using real traffic

Abstract

A wireless power reception device and a wireless communication method thereby are provided. The wireless communication method by the wireless power reception device may comprise the steps of: receiving a wireless power signal from a wireless power transmission device; measuring the strength of the wireless power signal; modulating the amplitude of the wireless power signal according to the measured strength of the wireless power signal; and performing communication with the wireless power transmission device by using the signal having the amplitude modulated.

Claims

1. A wireless communication method by a wireless power reception device, the method comprising:

receiving a wireless power signal from a wireless power transmission device;

measuring the strength of the wireless power signal;

modulating the amplitude of the wireless power signal according to the measured strength of the wireless power signal; and

performing communication with the wireless power transmission device by using the signal having the amplitude modulated,

wherein the modulating of the amplitude of the wireless power signal is performed by a modulator included in the wireless power reception device according to the measured strength of the wireless power signal and the modulator includes at least one resistor and at least one transistor.

2. The wireless communication method of claim 1, wherein the at least one transistor is any one of a metal oxide silicon field effect transistor (MOSFET) and a bipolar junction transistor (BJT).

3. The wireless communication method of claim 1, wherein the modulator is configured in a direct current (DC) terminal of the wireless power reception device.

4. The wireless communication method of claim 1, wherein the modulator is configured in an alternating current (AC) terminal of the wireless power reception device.

5. The wireless communication method of claim 1, wherein the modulator includes two or more transistors and two or more resistors.

6. A wireless power reception device comprising:

at least one secondary core receiving a wireless power signal transmitted from a wireless power transmission device;

a rectifier rectifying the received wireless power signal;

a detection circuit measuring the strength of the wireless power signal by monitoring an output of the rectifier;

a plurality of modulators modulating the amplitude of the wireless power signal; and

a controller controlling communication with the wireless power transmission device by using the signal having the amplitude modulated by the modulator,

wherein the modulator includes at least one resistor and at least one transistor.

7. The wireless power reception device of claim 6, wherein the at least one transistor is any one of a metal oxide silicon field effect transistor (MOSFET) and a bipolar junction transistor (BJT).

8. The wireless power reception device of claim 6, wherein the modulator is configured in a direct current (DC) terminal of the wireless power reception device.

9. The wireless power reception device of claim 6, wherein the modulator is configured in an alternating current (AC) terminal of the wireless power reception device.

10. The wireless power reception device of claim 6, wherein the modulator includes two or more transistors and two or more resistors.