METHOD AND APPARATUS FOR TRANSMITTING COMMUNICATION POWER IN WIRELESS POWER TRANSMISSION SYSTEM

• US 20150022145A1
• Filed: 07/22/2014
• Published: 01/22/2015
• Est. Priority Date: 07/22/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Nam Yun, Kwon, Sang Wook, Kwon, Hyuk Choon, Kim, Bong Chul, Park, Yun Kwon, Park, Jae Hyun
• Granted Patent: US 9,641,017 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• 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

Abstract

A method of operating a wireless power transmission apparatus includes receiving, from a wireless power reception apparatus, information on an operating power of a micro control unit (MCU) of the wireless power reception apparatus and information on an output of a direct current-to-direct current (DC/DC) converter of the wireless power reception apparatus; determining whether a charging power is to be transmitted to the wireless power reception apparatus based on the received information on the output of DC/DC converter; and transmitting, to the wireless power reception apparatus, an MCU operating power calculated based on the received information on the operating power of the MCU in response to a determination that the charging power is not to be transmitted to the wireless power reception apparatus.

Claims

1. A method of operating a wireless power transmission apparatus, the method comprising:

receiving, from a wireless power reception apparatus, information on an operating power of a micro control unit (MCU) of the wireless power reception apparatus and information on an output of a direct current-to-direct current (DC/DC) converter of the wireless power reception apparatus;

determining whether a charging power is to be transmitted to the wireless power reception apparatus based on the received information on the output of the DC/DC converter; and

transmitting, to the wireless power reception apparatus, an MCU operating power calculated based on the received information on the operating power of the MCU in response to a determination that the charging power is not to be transmitted to the wireless power reception apparatus.

2. The method of claim 1, wherein the wireless power reception apparatus comprises a battery and a battery charger;

and

the determining of whether the charging power is to be transmitted to the wireless power reception apparatus comprises;

receiving, from the wireless power reception apparatus, information on a battery supply voltage supplied to the battery; and

determining whether the battery is completely charged by the battery charger based on the received information on the battery supply voltage.

3. The method of claim 2, wherein the determining of whether the charging power is to be transmitted to the wireless power reception apparatus further comprises determining that the charging power is not to be transmitted to the wireless power reception in response to a determination that the battery is completely charged by the battery charger.

4. The method of claim 1, wherein the determining of whether the charging power is to be transmitted to the wireless power reception apparatus comprises:

receiving, from the wireless power reception apparatus, information regarding whether the wireless power reception apparatus is connected to an external power supply;

determining whether the wireless power reception apparatus is connected to the external power supply based on the received information regarding whether the wireless power reception apparatus is connected to the external power supply; and

determining that the charging power is not to be transmitted to the wireless power reception apparatus in response to a determination that the wireless power reception apparatus is connected to the external power supply.

5. The method of claim 1, wherein the wireless power reception apparatus comprises a battery charging case comprising a battery charger;

and

the determining of whether the charging power is to be transmitted to the wireless power reception apparatus comprises;

receiving, from the wireless power reception apparatus, information on a battery supply voltage supplied to a battery; and

determining whether the battery is completely charged by the battery charger based on the received information on the battery supply voltage.

6. The method of claim 5, wherein the determining of whether the charging power is to be transmitted to the wireless power reception apparatus further comprises determining that the charging power is not to be transmitted to the wireless power reception apparatus in response to a determination that the battery is completely charged by the battery charger.

7. The method of claim 1, wherein the wireless power reception apparatus comprises a battery charging case comprising a battery charger;

the determining of whether the charging power is to be transmitted to the wireless power reception apparatus comprises;

receiving, from the wireless power reception apparatus, information on a battery supply voltage supplied to a battery;

determining whether the battery is inserted in the battery charging case based on the received information on the battery supply voltage; and

determining that the charging power is not to be transmitted to the wireless power reception apparatus in response to a determination that the battery is not inserted in the battery charging case.

8. A method of operating a wireless power reception apparatus, the method comprising:

transmitting, to a wireless power transmission apparatus, information on an operating power of a micro control unit (MCU) of the wireless power reception apparatus and information on an output of a direct current-to-direct current (DC/DC) converter of the wireless power reception apparatus; and

receiving a power from the wireless power transmission apparatus;

wherein the received power is a power transmitted by the wireless power transmission apparatus in response to a result of determining, by the wireless power transmission apparatus, whether a charging power is to be transmitted to the wireless power reception apparatus based on the information on the output of the DC/DC converter transmitted to the wireless power transmission apparatus.

9. The method of claim 8, wherein the wireless power reception apparatus comprises a battery and a battery charger;

the method further comprises transmitting, to the wireless power transmission apparatus, information on a battery supply voltage supplied to the battery; and

the received power is a power transmitted by the wireless power transmission apparatus in response to a result of determining, by the wireless power transmission apparatus, whether the battery is completely charged by the battery charger based on the information on the battery supply voltage transmitted to the wireless power transmission apparatus.

10. The method of claim 8, wherein the wireless power reception apparatus comprises a battery charging case comprising a battery charger;

the method further comprises transmitting, to the wireless power transmission apparatus, information on a battery supply voltage supplied to a battery; and

the received power is a power transmitted by the wireless power transmission apparatus based on a result of determining, by the wireless power transmission apparatus, whether the battery is inserted in the battery charging case based on the information on the battery supply voltage transmitted to the wireless power transmission apparatus, and a result of determining, by the wireless power transmission apparatus, whether the battery is completely charged by the battery charger based on the information on the battery supply voltage transmitted to the wireless power transmission apparatus.

11. A wireless power transmission apparatus comprising:

a communication unit configured to receive, from a wireless power reception apparatus, information on an operating power of a micro control unit (MCU) of the wireless power reception apparatus and information on an output of a direct current-to-direct current (DC/DC) converter of the wireless power reception apparatus;

a determiner configured to determine whether a charging power is to be transmitted to the wireless power reception apparatus based on the received information on the output of the DC/DC converter; and

a resonator configured to transmit, to the wireless power reception apparatus, an MCU operating power calculated based on the information on the operating power of the MCU in response to a determination that the charging power is not to be transmitted to the wireless power reception apparatus.

12. The wireless power transmission apparatus of claim 11, wherein the wireless power reception apparatus comprises a battery and a battery charger;

the communication unit is further configured to receive, from the wireless power reception apparatus, information on a battery supply voltage supplied to the battery; and

the determiner is further configured to determine whether the battery is completely charged by the battery charger based on the received information on the battery supply voltage.

13. The wireless power transmission apparatus of claim 11, wherein the wireless power reception apparatus comprises a battery charging case comprising a battery charger;

the communication unit is further configured to receive, from the wireless power reception apparatus, information on a battery supply voltage supplied to a battery; and

the determiner is further configured to determine whether the battery is inserted in the battery charging case based on the received information on the battery supply voltage, and determine whether the battery is completely charged by the battery charger based on the received information on the battery supply voltage.

14. A method of operating a wireless power transmission apparatus, the method comprising:

receiving, from a wireless power reception apparatus, information on a power available to the wireless power reception apparatus;

determining whether to transmit a communication power or a charging power to the wireless power reception apparatus based on the received information on the power available to the wireless power reception apparatus; and

transmitting the determined one of the communication power and the charging power to the wireless power reception apparatus.

15. The method of claim 14, wherein the communication power is only enough power to enable the wireless power reception apparatus to communicate with the wireless power transmission apparatus;

and

the charging power is enough power to enable the wireless power reception apparatus to perform all normal operations of the wireless power reception apparatus and charge a battery of the wireless power reception apparatus.

16. The method of claim 14, wherein the information on the power available to the wireless power reception apparatus comprises any one or any combination of:

information on an output of a direct current-to-direct current (DC/DC) converter of the wireless power reception apparatus;

information on a battery supply voltage supplied to a battery of the wireless power reception apparatus; and

information regarding whether the wireless power reception apparatus is connected to the external power supply.

17. The method of claim 14, further comprising receiving, from the wireless power reception apparatus, information on an operating power of a micro control unit (MCU) of the wireless power reception apparatus;

and

determining the communication power based on the received information on the operating power of the MCU.

18. The method of claim 14, wherein the determining of whether to transmit a communication power or a charging power to the wireless power reception apparatus comprises:

determining whether enough power is available to the wireless power reception apparatus to enable the wireless power reception apparatus to perform all normal operations of the wireless power reception apparatus and charge a battery of the wireless power reception apparatus based on the received information on the power available to the wireless power reception apparatus;

determining to transmit the communication power to the wireless power reception apparatus based on a determination that enough power is available to the wireless power reception apparatus to enable the wireless power reception apparatus to perform all normal operations of the wireless power reception apparatus and charge a battery of the wireless power reception apparatus; and

determining to transmit the charging power to the wireless power reception apparatus based on a determination that enough power is not available to the wireless power reception apparatus to enable the wireless power reception apparatus to perform all normal operations of the wireless power reception apparatus and charge a battery of the wireless power reception apparatus.