Wireless power feeding system and capsule endoscope system applied with the same

• US 8,203,434 B2
• Filed: 06/04/2007
• Issued: 06/19/2012
• Est. Priority Date: 06/13/2006
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: Yoshida, Naoki
• Primary Examiner(s): BROWN, VERNAL U
• Application Number:
  US11/810,115
• Publication Number:
  US 20070290814A1
• Time in Patent Office: 1,842 Days
• Field of Search: 340/10.2, 340/10.34, 340/12.38, 340/538.16, 340/854.8, 340/572.2, 340/572.6, 324/127, 341/15
• US Class Current: 340/10.34
• CPC Class Codes: A61B 1/00016 using wireless means
• CPC Class Codes: A61B 1/00029 externally powered, e.g. wireless
• CPC Class Codes: A61B 1/00158 using magnetic field
• CPC Class Codes: A61B 1/041 Capsule endoscopes for imaging
• CPC Class Codes: A61B 2560/0219 of externally powered implanted units
• CPC Class Codes: H02J 2310/23 The load being a medical device, a medical implant, or a life supporting device
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment

Abstract

A wireless power feeding system is provided, which achieves a configuration enabling effective reception of electrical energy wirelessly transmitted from a wireless power feeding device, and which contributes to the improvement of the power reception efficiency. For the above purpose, the wireless power feeding system includes a power transmitting coil for wirelessly transmitting the electrical energy, a power supply connected to the power transmitting coil, a control unit for controlling the power supply, a power receiving coil portion for receiving the electrical energy transmitted from the power transmitting coil, a power receiving circuit for supplying a load member with the electrical energy received by a power receiving coil, and a magnetic member for collecting a magnetic flux generated by the power transmitting operation of the power transmitting coil to the power receiving coil.

Claims

1. A wireless power feeding system comprising:

a power transmitting coil for wirelessly transmitting electrical energy;

a power supply connected to the power transmitting coil;

a control unit for controlling the power supply;

a power receiving coil portion including a power receiving coil for receiving the electrical energy transmitted from the power transmitting coil, and a core around which the power receiving coil is wound, the core collecting a magnetic flux generated by the power transmitting operation of the power transmitting coil to the power receiving coil;

a power receiving circuit for supplying a load member with the electrical energy received by the power receiving coil; and

a magnetic member having a circular shape for collecting the magnetic flux generated by the power transmitting operation of the power transmitting coil to the power receiving coil, the magnetic member being formed as a separate member with respect to the core and arranged away from the power receiving coil and the core,

wherein the magnetic member and the power receiving coil are disposed such that hollow interiors thereof are consecutive to each other.

2. The wireless power feeding system according to claim 1, wherein the diameter of the magnetic member is set to be larger than the diameter of the power receiving coil.

3. The wireless power feeding system according to claim 1, wherein the direction of the magnetic member can be changed.

4. The wireless power feeding system according to claim 2, wherein the direction of the magnetic member can be changed.

5. A capsule endoscope system applied with the wireless power feeding system according to claim 1.

6. A capsule endoscope system applied with the wireless power feeding system according to claim 2.

7. A capsule endoscope system applied with the wireless power feeding system according to claim 3.

8. A capsule endoscope system applied with the wireless power feeding system according to claim 4.