Wireless power transmission apparatus and method therefor

• US 9,985,695 B2
• Filed: 04/17/2014
• Issued: 05/29/2018
• Est. Priority Date: 04/17/2013
• Status: Active Grant

• Current Assignee: Intellectual Discovery Co., Ltd.
• Original Assignee: Intellectual Discovery Co., Ltd.
• Inventors: Won, Yun Jae, Lim, Seung Ok
• Primary Examiner(s): Shin, Jeffrey
• Application Number:
  US14/784,770
• Publication Number:
  US 20160087686A1
• Time in Patent Office: 1,503 Days
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• 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 7/00034 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 5/77 for interrogation
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

The present invention relates to a wireless power transmission apparatus and a method therefor, and more particularly to a wireless power transmission apparatus for supplying wirelessly power to a plurality of wireless power reception devices using different wireless power transmission/reception means. A wireless power transmission apparatus according the present invention includes: a power transmission module for transmitting wirelessly power by means of the magnetic field of one of a plurality of predetermined frequency bands; a communication module for communicating with a wireless power reception device; and a controller for setting a power transmission mode based on a plurality of device profiles reflecting the frequency bands used for wireless power transmission/reception received from a plurality of wireless power reception devices.

Claims

1. A wireless power transmitting apparatus comprising:

a power transmitting module transmitting wireless power by using a magnetic field of a frequency band from among a plurality of predetermined frequency bands;

a communication module performing communication with a wireless power receiving apparatus; and

a controller receiving a plurality of device profiles reflecting a frequency band used by a plurality of wireless power receiving apparatuses for transceiving the wireless power from the plurality of wireless power receiving apparatuses respectively, and configuring a power transmission mode based on the plurality of device profiles,

wherein the power transmission mode includes a simultaneous mode of simultaneously transmitting the wireless power to the plurality of wireless power receiving apparatuses, a time division mode of transmitting the wireless power to the plurality of wireless power receiving apparatuses in a time division scheme, and a time division simultaneous mode of transmitting the wireless power to the plurality of wireless power receiving apparatuses simultaneously during a time-divided interval in a time division scheme.

2. The wireless power transmitting apparatus of claim 1, wherein the controller determines the frequency band used by the plurality of wireless power receiving apparatuses for transceiving the wireless power based on the plurality of device profiles and configures the power transmission mode according to whether the frequency band used by the plurality of wireless power receiving apparatuses are the same as or different from each other.

3. The wireless power transmitting apparatus of claim 2, wherein the controller configures the power transmission mode as the time division mode or the time division simultaneous mode when two or more frequency bands for transceiving the wireless power are provided.

4. The wireless power transmitting apparatus of claim 2, wherein each of the plurality of device profiles includes support mode information indicating a mode which the wireless power receiving apparatus supports between the time division mode and the simultaneous mode.

5. The wireless power transmitting apparatus of claim 4, wherein the controller configures the power transmission mode based on the support mode information when all frequency bands for transceiving the wireless power are the same as each other.

6. The wireless power transmitting apparatus of claim 5, wherein when all frequency bands for transceiving the wireless power are the same as each other, the controller configures the power transmission mode as the time division mode if the supported mode is the time division mode and as the simultaneous mode if the supported mode is the simultaneous mode.

7. The wireless power transmitting apparatus of claim 4, wherein the controller configures the power transmission mode based on the support mode information when two or more frequency bands for transceiving the wireless power are provided.

8. The wireless power transmitting apparatus of claim 7, wherein when two or more frequency bands for transceiving the wireless power are provided, the controller configures the power transmission mode as the time division mode if the supported mode is the time division mode and as the time division simultaneous mode if the supported mode is the simultaneous mode.

9. A wireless power transmitting apparatus comprising:

a power transmitting module transmitting wireless power by using a first magnetic field of a first frequency band or a second magnetic field of a second frequency band different from the first frequency band;

a communication module performing communication with a wireless power receiving apparatus; and

a controller sensing the winless power receiving apparatus positioned in a wireless power transmission range, dividing a power transmission interval into a first time slot and a second time slot when at least one first wireless power receiving apparatus using the first magnetic field and at least one second wireless power receiving apparatus using the second magnetic field are positioned within the wireless power transmission range, supplying power to the at least one first wireless power receiving apparatus by transmitting the first magnetic field through the power transmitting module during the first time slot, and supplying power to the at least one second wireless power receiving apparatus by transmitting the second magnetic field through the power transmitting module during the second time slot,

wherein the controller transmits a first message indicating allocation of the first time slot to the first wireless power receiving apparatus through the communication module and a second message indicating allocation of the second time slot to the second wireless power receiving apparatus through the communication module,

wherein the communication module includes a first communication module and a second communication module different from the first communication module in a frequency band or a communication carrier, and

wherein the controller transmits the first message through the first communication module and the second message through the second communication module.

10. The wireless power transmitting apparatus of claim 9, wherein:

the first communication module is an in-band communication module that performs communication by using the first magnetic field, and

the second communication module is an in-band communication module that performs communication by using the second magnetic field.

11. The wireless power transmitting apparatus of claim 9,

wherein the first communication module is the in-band communication module that performs communication by using the first magnetic field, and

wherein the second communication module is an out-band communication module that performs communication by using the communication carrier other than the magnetic field.

12. The wireless power transmitting apparatus of claim 11, wherein the second communication module supports at least one communication protocol of Bluetooth, Zigbee, RFID, NFC, and WiFi.

13. The wireless power transmitting apparatus of claim 9, wherein the first wireless power apparatus allows receiving the power in the first time slot and cuts off receiving the power in the second time slot based on the first message, and

wherein the second wireless power apparatus cuts off receiving the power in the first time slot and allows receiving the power in the second time slot based on the second message.

14. The wireless power transmitting apparatus of claim 9, wherein the controller transmits a notification message indicating the start of the time slot to the first wireless power receiving apparatus and the second wireless power receiving apparatus through the communication module when each time slot starts, and

wherein the first wireless power receiving apparatus and the second wireless power receiving apparatus determine the start of the time slot based on the notification message and determine permitting and cutting off the reception of the power according to the determination result.