Wireless power supply system

• US 10,622,847 B2
• Filed: 10/26/2018
• Issued: 04/14/2020
• Est. Priority Date: 07/18/2013
• Status: Active Grant

• Current Assignee: IHI Corporation
• Original Assignee: IHI Corporation
• Inventors: Takatsu, Yuji, Ueda, Akio, Niizuma, Motonao, Akune, Kei, Hayashi, Tooru, Tsuchiyama, Akihiko, Sedokubo, Kazushi, Kawakita, Masaki, Kanda, Mai, Li, Gongwei, Kokubu, Ryota
• Primary Examiner(s): Kim, Jung
• Application Number:
  US16/172,372
• Publication Number:
  US 20190068007A1
• Time in Patent Office: 536 Days
• CPC Class Codes: B60L 2200/10 Air crafts
• CPC Class Codes: B60L 2200/32 Waterborne vessels
• CPC Class Codes: B60L 2200/40 Working vehicles
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: B60L 53/51 Photovoltaic means
• CPC Class Codes: H02J 5/005 with inductive power transfer for charging H02J7/025
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

A wireless power supply system includes: a primary power-supplying coil which is a power-supplying coil capable of wirelessly supplying electric power to another power-supplying coil; a first machine that supports the primary power-supplying coil; a secondary power-supplying coil which is a power-supplying coil wirelessly supplied with electric power from another power-supplying coil; and a second machine that can move while supporting the secondary power-supplying coil. The relative positional relationship or the relative attitudinal relationship between the first machine and the second machine can be adjusted corresponding to the movement or change in attitude of the second machine so that a state in which electric power is wirelessly supplied from the primary power-supplying coil to the secondary power-supplying coil is maintained.

Claims

1. A wireless power supply system comprising:

a primary power-supplying coil which is a power-supplying coil configured to wirelessly supply electric power to another power-supplying coil;

a first machine supporting the primary power-supplying coil;

a secondary power-supplying coil which is a power-supplying coil wirelessly supplied with electric power from another power-supplying coil;

a second machine supporting the secondary power-supplying coil and configured to move; and

a reel-out/in device that reels the rope in and out,

wherein the first machine includes a first machine body and a rope that connects the first machine body and the second machine and is configured to be reeled out or reeled in,

wherein the primary power-supplying coil is moved with the rope, and a relative positional relationship between the first machine and the second machine is capable of being adjusted in response to a movement of the second machine such that a state in which electric power is wirelessly supplied from the primary power-supplying coil to the secondary power-supplying coil is maintained, and/or the primary power-supplying coil is moved with the rope, and a relative attitudinal relationship between the first machine and the second machine is capable of being adjusted in response to a change in attitude of the second machine such that a state in which electric power is wirelessly supplied from the primary power-supplying coil to the secondary power-supplying coil is maintained,

the primary power-supplying coil is guided to freely move along the rope such that the primary power-supplying coil moves between the first machine body and the second machine, and can move away from and approach the second machine, and

the primary power-supplying coil is moved along the rope to approach the second machine so that electric power is wirelessly supplied from the primary power-supplying coil to the secondary power-supplying coil supported by the second machine, and

wherein when the reel-out/in device reels the rope out, a distance between the first machine and the second machine increases, and

when the reel-out/in device reels the rope in, the distance between the first machine and the second machine decreases.