Title:
Non-contact electric power transmission systems
Document Type and Number:
Japanese Patent JP5908562
Kind Code:
B2
Abstract:
A non-contact power transmission system comprises: a primary coil including a power supply coil and a magnetic resonance coil; and a secondary coil including a load coil, thereby transmitting an electric power from the power supply coil at a self-resonating frequency of the magnetic resonance coil, which is determined by a parasitic capacitance between wound wires of the coil and a self inductance of the coil, and taking out the electric power supplied, from the load coil of the secondary coil through magnetic coupling, with non-contact, wherein the electric power is transmitted, with non-contact, with applying magnetic coupling in coupling between the power supply coil and the magnetic resonance coil and coupling between the magnetic resonance coil and the load coil.
Inventors:
Katsuhide Ichikawa
Application Number:
JP2014217571A
Publication Date:
April 26, 2016
Filing Date:
October 24, 2014
Export Citation:
Assignee:
Hitachi Maxell Co., Ltd.
International Classes:
H02J7/00; G06K7/10; H02J50/00; G06K17/00; G06K19/07; H04B5/02
Domestic Patent References:
| JP2011029799A |
Foreign References:
| US20110133569 |
Attorney, Agent or Firm:
Patent Business Corporation Takewa International Patent Office
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