WIRELESS POWER TRANSMITTING DEVICE AND METHOD FOR CONTROLLING TO TRANSMIT WIRELESS POWER SIGNAL IN WIRELESS POWER TRANSMITTING DEVICE

• US 20140354069A1
• Filed: 12/21/2012
• Published: 12/04/2014
• Est. Priority Date: 12/22/2011
• Status: Active Grant

• Current Assignee: GE Hybrid Technologies, LLC
• Original Assignee: Hanrim Postech Co., Ltd.
• Inventors: Jung, Chun-Kil
• Granted Patent: US 9,653,950 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• 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: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

There is provided a wireless power transmitting device including a transmission coil configured to transmit a wireless power signal to a wireless power receiving device; a driving driver configured to generate a wireless power driving signal which is a driving signal for the wireless power signal; an alternating current sensor configured to detect an alternating current signal of the transmission coil which is generated by a wireless power receiving signal including wireless power receiving information of a wireless power receiving device; an alternating voltage sensor configured to detect an alternating voltage signal of the transmission coil, the alternating current signal being generated by the wireless power receiving signal from the wireless power receiving device; a signal processing unit configured to process the alternating current signal and the alternating voltage signal from the alternating current sensor and the alternating voltage sensor; and a wireless power transmitting controller that, when the alternating current signal and the alternating voltage signal of the transmission coil are detected and signal processing is normally performed on at least one of the alternating current signal and the alternating voltage signal, obtains the wireless power receiving information through the signal on which the signal processing is performed and controls the driving driver on the basis of the wireless power receiving information. Further, there is provided a method for controlling to transmit a wireless power signal in the wireless power transmitting device.

Claims

1. A wireless power transmitting device comprising:

a transmission coil configured to transmit a wireless power signal to a wireless power receiving device;

a driving driver configured to generate a wireless power driving signal which is a driving signal for the wireless power signal;

an alternating current sensor configured to detect an alternating current signal of the transmission coil, the alternating current signal being generated by a wireless power receiving signal including wireless power receiving information from a wireless power receiving device;

an alternating voltage sensor configured to detect an alternating voltage signal of the transmission coil, the alternating voltage signal being generated by the wireless power receiving signal of the wireless power receiving device;

a signal processing unit configured to process the alternating current signal and the alternating voltage signal from the alternating current sensor and the alternating voltage sensor; and

a wireless power transmitting controller configured to obtain the wireless power receiving information through a signal on which signal processing is performed when the alternating current signal and the alternating voltage signal of the transmission coil are detected and the signal processing is normally performed on at least one of the alternating current signal and the alternating voltage signal, and configured to control the driving driver on the basis of the wireless power receiving information.

2. The wireless power transmitting device of claim 1, further comprising:

an alternating current sensor configured to be connected to the driving driver so as to detect a direct current signal of the driving driver changed by the wireless power receiving signal.

3. The wireless power transmitting device of claim 2, wherein the wireless power transmitting controller is configured to obtain the wireless power receiving information through the signal on which the signal processing is perform when the signal processing is normally performed on at least one of the alternating current signal, the direct current signal and the alternating voltage signal, and to control the driving driver on the basis of the wireless power receiving information.

4. The wireless power transmitting device of claim 3, wherein the wireless power transmitting controller is configured to determine that the wireless power receiving signal is in a reception state error when the signal processing is not normally performed on all of the alternating signal, the alternating current signal and the alternating voltage signal.

5. The wireless power transmitting device of claim 4, wherein the wireless power transmitting controller is configured to control the driving driver to stop generation of the wireless power transmitting signal when the reception state error is detected more than a predetermined number of times.

6. The wireless power transmitting device of claim 5, further comprising:

an indicator configured to display the reception state error.

7. The wireless power transmitting device of claim 3, wherein the wireless power transmitting controller is configured to sequentially operate the alternating current sensor, the alternating voltage sensor and the direct current sensor to obtain the wireless power receiving signal.

8. The wireless power transmitting device of claim 3, wherein the wireless power transmitting controller is configured to select an optimal signal of an excellent signal state among the alternating current signal, the alternating voltage signal and the direct voltage signal, and to obtain the wireless power receiving signal through the optimal signal.

9. The wireless power transmitting device of claim 8, wherein the wireless power transmitting controller selects a signal having the highest power level among the alternating current signal, the alternating voltage signal and the direct voltage signal, as the optimal signal.

10. The wireless power transmitting device of claim 1, wherein the wireless power receiving signal includes an ID signal, a voltage-up signal, a voltage-down signal, and a full charging signal.

11. A method for controlling to transmit a wireless power signal in a wireless power transmitting device, the method comprising:

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

receiving the wireless power receiving signal by receiving at least two of an alternating current signal and an alternating voltage signal of the transmission coil which is generated by the wireless power receiving signal and a direct current signal of a driving driver;

performing signal processing on normal signals to obtain wireless power receiving information included in the wireless power receiving signal when one or more of the received signals are the normal signals; and

controlling a wireless power signal on the basis of the wireless power receiving information.

12. The method of claim 11, further comprising:

determining that the wireless power receiving signal is a reception state error when the signal processing is not normally performed on all of the alternating signal, the direct current signal and the alternating voltage signal.

13. The method of claim 11, wherein the step of receiving the wireless power receiving signal by receiving at least two of an alternating current signal and an alternating voltage signal of the transmission coil which is generated by the wireless power receiving signal and a direct current signal of a driving driver includes obtaining the wireless power receiving signal by sequentially operating an alternating current sensor and the alternating voltage sensor connected to the transmission coil and the direct current sensor connected to the driving driver.

14. The method of claim 11, wherein the step of performing signal processing on normal signals to obtain wireless power receiving information included in the wireless power receiving signal when one or more of the received signals are the normal signals includes selecting a signal having the highest power level among the alternating current signal, the alternating voltage signal and the direct voltage signal, as the optimal signal, to perform the signal processing on the optimal signal.

15. The method of claim 11, wherein the wireless power receiving signal includes an ID signal, a voltage-up signal, a voltage-down signal, and a full charging signal.