POWER RECEIVING UNIT, POWER TRANSMISSION UNIT, AND FEED SYSTEM

• US 20170077758A1
• Filed: 11/22/2016
• Published: 03/16/2017
• Est. Priority Date: 10/10/2013
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Washiro, Takanori, Yajima, Masakazu, Kikuchi, Kazuo, Hirabayashi, Takayuki
• Granted Patent: US 10,340,740 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01F 38/00 Adaptations of transformers or inductances for specific applications or functions
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/05 using capacitive coupling
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction

Abstract

A power receiving unit includes: a power receiving section configured to receive electric power from a power transmission unit; and an electromagnet configured to be magnetized based on the electric power received from the power transmission unit.

Claims

1. A power transmission unit comprising:

a power transmission section configured to supply electric power to a power receiving unit; and

a fixing section including a material to be attracted to a magnet, wherein the power receiving unit includes a power receiving section configured to receive the electric power from the power transmission section, and an electromagnet configured to be magnetized based on the electric power received from the power transmission section.

2. The power transmission unit according to claim 1, wherein the power transmission section is provided along a vertical plane or an inclined plane.

3. The power transmission unit according to claim 1, wherein the fixing section is configured of iron (Fe), nickel (Ni), or cobalt (Co), or a material including any of iron, nickel, and cobalt.

4. The power transmission unit according to claim 1, wherein the power transmission section includes a first electrode configured to be paired with a second electrode provided in the power receiving unit, and a power transmission circuit connected to the first electrode and including an AC-signal generation source.

5. The power transmission unit according to claim 4, wherein the first electrode also serves as the fixing section.

6. The power transmission unit according to claim 4, wherein the fixing section is provided in a selective region corresponding to a mounting location of the electromagnet of the power receiving unit.

7. A power transmission apparatus comprising:

power transmission circuitry configured to supply electric power to a power receiving apparatus; and

fixing circuitry including a material configured for attraction to a magnet, wherein the power receiving apparatus includes power receiving circuitry configured to receive the electric power from the power transmission circuitry, and an electromagnet configured to be magnetized based on the electric power received from the power transmission circuitry.

8. The power transmission apparatus according to claim 7, wherein the power transmission circuitry is provided along a vertical plane or an inclined plane.

9. The power transmission apparatus according to claim 7, wherein the fixing circuitry is configured of iron (Fe), nickel (Ni), or cobalt (Co), or a material including any of iron, nickel, and cobalt.

10. The power transmission apparatus according to claim 7, wherein the power transmission circuitry includes a first electrode configured to be paired with a second electrode provided in the power receiving circuitry, and a power transmission circuit connected to the first electrode and including an AC-signal generation source.

11. The power transmission apparatus according to claim 10, wherein the first electrode also serves as the fixing circuitry.

12. The power transmission apparatus according to claim 10, wherein the fixing circuitry is provided in a selective region corresponding to a mounting location of the electromagnet of the power receiving circuitry.