Wireless power transmission system based on cell division

• US 10,050,479 B2
• Filed: 07/25/2016
• Issued: 08/14/2018
• Est. Priority Date: 11/29/2011
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Eun Seok, Kwon, Sang Wook, Kim, Ki Young, Kim, Nam Yun, Kim, Dong Zo, Park, Yun Kwon, Ryu, Young Ho, Yoon, Chang Wook, Choi, Jin Sung, Hong, Young Tack
• Primary Examiner(s): Whitmore, Stacy
• Application Number:
  US15/218,142
• Publication Number:
  US 20160336790A1
• Time in Patent Office: 750 Days
• Field of Search: 320107-108
• CPC Class Codes: H02J 50/10 using inductive coupling
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A wireless power transmission system based on cell division is provided. A communication and power control method of the wireless power transmission system, includes setting a magnetic coupling zone. The method further includes detecting a target device in the magnetic coupling zone. The method further includes transmitting a power to the target device. The method further includes adjusting an amount of the power based on a transmission efficiency of the power.

Claims

1. A source device of a wireless power transmission system, comprising:

one or more processors configured to;

compare a transmission efficiency to a target device from the source device and a transmission efficiency to the target device from another neighboring source device, through communicating with the target device and the another neighboring source device,

set a wireless power transmission cell based on the comparison, and

detect the target device in the wireless power transmission cell; and

a source resonator configured to transmit a power to the target device,

wherein the one or more processors are further configured to adjust an amount of the power based on the transmission efficiency of the power.

2. The source device of claim 1, wherein:

the power is to be used to charge the target device; and

the source resonator is further configured to transmit, to the target device, a wake-up power to be used to activate the target device.

3. The source device of claim 1, wherein the one or more processors are further configured to:

communicate with the another neighboring source device; and

set the wireless power transmission cell based on the communication.

4. The source device of claim 1, wherein the one or more processors are further configured to:

set the wireless power transmission cell based on a distance within which power transmission is possible.

5. The source device of claim 1, wherein:

the source resonator is further configured to transmit, to the target device, a wake-up request signal for an initial communication; and

the one or more processors are further configured to

receive, from the target device, information on a receiving sensitivity of the wake-up request signal, or information on a receiving level of the power to be used to charge the target device, or any combination thereof, and

determine the transmission efficiency based on information on the receiving sensitivity, or information on the receiving level, or any combination thereof.

6. The source device of claim 1, wherein the one or more processors are further configured to:

transmit, to the target device, a power reception suspension request signal requesting disconnection of a load of the target device.