POWER FEEDING UNIT, POWER RECEIVING UNIT, AND FEED SYSTEM

• US 20150097447A1
• Filed: 08/21/2014
• Published: 04/09/2015
• Est. Priority Date: 10/09/2013
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Washiro, Takanori
• Granted Patent: US 9,473,206 B2
• Time in Patent Office: Days
• US Class Current: 307/149
• CPC Class Codes: H02J 50/10 using inductive coupling
• 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: H04B 5/22 Capacitive coupling
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A power feeding unit includes: a power feeding electrode configured to be coupled through an electric field with a power receiving electrode of a power receiving unit; a power feeding section configured to feed the power receiving unit with power through the power feeding electrode; and a power feeding side communication section configured to communicate with the power receiving unit through the power feeding electrode.

Claims

1. A power feeding unit comprising:

a power feeding electrode configured to be coupled through an electric field with a power receiving electrode of a power receiving unit;

a power feeding section configured to feed the power receiving unit with power through the power feeding electrode; and

a power feeding side communication section configured to communicate with the power receiving unit through the power feeding electrode.

2. The power feeding unit according to claim 1, wherein the power feeding side communication section supplies a first signal to the power receiving unit and receives modulation of the first signal modulated by the power receiving unit, as a second signal.

3. The power feeding unit according to claim 2, wherein the power feeding section starts or stops the power feeding based on the second signal.

4. The power feeding unit according to claim 2, wherein

the second signal is identification data used for identifying the power receiving unit, and

the power feeding section authenticates the power receiving unit with use of the identification data.

5. The power feeding unit according to claim 2, wherein the power feeding side communication section intermittently supplies the first signal to the power receiving unit.

6. The power feeding unit according to claim 2, wherein the power feeding section supplies an AC power signal to the power receiving unit to feed the power receiving unit with power, the AC power signal having a frequency excluded from a frequency band used for communication by the power feeding side communication section.

7. The power feeding unit according to claim 2, further comprising:

a low pass filter interposed between the power feeding section and the power feeding electrode; and

a high pass filter or a band pass filter interposed between the power feeding side communication section and the power feeding electrode.

8. A power receiving unit comprising:

a power receiving electrode configured to be coupled through an electric field with a power feeding electrode of a power feeding unit;

a power receiving section configured to receive power from the power feeding unit through the power receiving electrode; and

a power receiving side communication section configured to communicate with the power feeding unit through the power receiving electrode.

9. The power receiving unit according to claim 8, wherein the power receiving side communication section modulates a first signal supplied from the power feeding unit.

10. A feed system comprising:

a power feeding unit; and

a power receiving unit, wherein

the power feeding unit includes

a power feeding electrode,

a power feeding section configured to feed the power receiving unit with power through the power feeding electrode, and

a power feeding side communication section configured to communicate with the power receiving unit through the power feeding electrode, and

the power receiving unit includes

a power receiving electrode configured to be coupled through an electric field with the power feeding electrode,

a power receiving section configured to receive power from the power feeding unit through the power receiving electrode, and

a power receiving side communication section configured to communicate with the power feeding unit through the power receiving electrode.

11. The feed system according to claim 10, further comprising

a communication apparatus, wherein

the power receiving unit includes a communication section communicating with the communication apparatus,

the power receiving side communication section receives setting data from the power feeding side communication section, the setting data being used by the communication section to communicate with the communication apparatus, and

the communication section communicates with the communication apparatus based on the setting data.