Power supplying device and power receiving/supplying device

• US 10,714,962 B2
• Filed: 01/26/2017
• Issued: 07/14/2020
• Est. Priority Date: 01/27/2016
• Status: Active Grant

• Current Assignee: Nitto Denko Corporation
• Original Assignee: Nitto Denko Corporation
• Inventors: Vu, Nam Tung, Hatanaka, Takezo, Sueyoshi, Taiki, Inoue, Masami, Tsuda, Hisashi
• Primary Examiner(s): Zhou, Zixuan
• Application Number:
  US16/073,254
• Publication Number:
  US 20190044365A1
• Time in Patent Office: 1,265 Days
• Field of Search: 320108, 307104
• CPC Class Codes: A61L 2/06 Hot gas
• CPC Class Codes: A61L 2/10 Ultraviolet radiation
• CPC Class Codes: A61L 2/26 Accessories or devices or components used for biocidal treatment
• CPC Class Codes: H01F 27/02 Casings
• CPC Class Codes: H01F 27/2823 Wires H01F27/2866 takes precedence
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]

Abstract

A driving device is easily handled at the start and end of charging. A housing cup which includes a bottom surface portion on which at least one driving device including a power-receiving device is placed and a side face portion extending outward from the peripheral edge portion of the bottom surface portion and is formed so that an upper peripheral edge portion of the side face portion is an opening portion, and a magnetic field formation device which is configured to generate a variable magnetic field at a housing region surrounded by the bottom surface portion and the side face portion to allow the power-receiving device to receive power irrespective of the direction and position of the power-receiving device are provided.

Claims

1. A power-supplying device comprising:

a housing cup which includes a bottom surface portion on which at least one driving device including a power-receiving device is placed and a side face portion extending outward from a peripheral edge portion of the bottom surface portion, the housing cup being formed so that an upper peripheral edge portion of the side face portion is an opening portion; and

a magnetic field formation device configured to generate a variable magnetic field at a housing region surrounded by the bottom surface portion and the side face portion to allow the power-receiving device to receive power irrespective of the direction and position of the power-receiving device,

the magnetic field formation device including;

at least one power supplying resonator configured to generate the variable magnetic field; and

power-supplying coils configured to generate an induced current in the at least one power supplying resonator,

the at least one power supplying resonator and the power-supplying coils being disposed so that coil surfaces oppose a predetermined region including the housing region surrounded by the bottom surface portion and the side face portion of the housing cup, and

the magnetic field formation device outputting a variable current to one of output targets which are at least one of and not all of the power-supplying coils and being capable of repeatedly switching the output target to which the variable current is output.

2. The power-supplying device according to claim 1, wherein, the magnetic field formation device repeatedly changes plural magnetic field states each of which is a combination of a direction, density, and magnitude of magnetic lines of force in the variable magnetic field.

3. The power-supplying device according to claim 1, wherein, the magnetic field formation device includes:

the power-supplying coils each of which generates a variable magnetic field as a variable current is supplied to each of the power-supplying coils via a first current path on one coil end side and a second current path on the other coil end side;

a resonance capacitor which is provided on at least one of the first current path and the second current path; and

a power-supplying coil short-circuit mechanism which is capable of causing at least one of the power-supplying coils to function as a power supplying resonator by short-circuiting end portions of the first current path and the second current path.

4. The power-supplying device according to claim 1, wherein, a stop process of not outputting the variable current to any of the power-supplying coils is executed with a predetermined combination of a timing and a duration.

5. The power-supplying device according to claim 1, further comprising a display which is configured to display a charging state of a battery provided in the driving device.

6. The power-supplying device according to claim 1, further comprising a drier configured to dry the driving device.

7. The power-supplying device according to claim 1, further comprising a sterilizer configured to sterilize the driving device.

8. A power receiving/supplying device comprising:

the power-supplying device according to claim 1; and

a power-receiving device which is housed in the housing region of the housing cup of the power-supplying device and is configured to receive power by the variable magnetic field.