Title:
CONTACTLESS POWER FEEDING SYSTEM
Document Type and Number:
Japanese Patent JP3906722
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a contactless power feeding system with a simple structure capable of identifying the conditions of a power receiving side for power supply control.
SOLUTION: This contactless power feeding system 1 generates induced voltage to a second coil L2 by magnetic flux generated by a first coil L1 in which a high frequent power is supplied from a high frequent inverter circuit 11, and converts the induced voltage into a prescribed form by a power converting circuit 21 to output it to a load 30. A signal generating device 24 generates a signal having a frequency of a harmonic element in an oscillation frequency of the high frequent inverter circuit 11, and a signal receiving circuit 12 outputs a signal for detecting the presence of a contactless power receiving device 2 and a signal for detecting a signal generated by the signal generating device 24. An inverter control circuit 13 controls the oscillation of the high frequent inverter circuit 11 based on the detected signals.
Inventors:
Hideaki Abe
Takeshi Kojima
Katsura Yoshishiki
Mikihiro Yamashita
Takeshi Kojima
Katsura Yoshishiki
Mikihiro Yamashita
Application Number:
JP2002086289A
Publication Date:
April 18, 2007
Filing Date:
March 26, 2002
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS,LTD.
International Classes:
H02J50/00; B60L11/18; H02J7/00; H02J50/10; H02J50/60; H02J50/80; H02M3/28; H02M7/12; (IPC1-7): H02J17/00; B60L11/18; H02M3/28; H02M7/12
Domestic Patent References:
| JP6311658A | ||||
| JP11178249A |
Attorney, Agent or Firm:
Keisei Nishikawa
Atsuo Mori
Atsuo Mori
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