Title:
NON-CONTACT POWER TRANSMISSION SYSTEM AND NON-CONTACT POWER TRANSMISSION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2011/093292
Kind Code:
A1
Abstract:
Disclosed is a non-contact power transmission system, wherein frequency control of alternating current power on the power transmitting side, corresponding to the distance between antennas, is eliminated, and a high transmission efficiency can be maintained. Also disclosed is a non-contact power transmission apparatus.
The non-contact power transmission system is provided with a power receiving- side antenna, a power transmitting-side antenna, an alternating current power driver, a matching circuit, and a control circuit. The power receiving-side antenna is mounted on an apparatus, and receives power by electromagnetic coupling. The power transmitting-side antenna transmits power to the power receiving-side antenna by electromagnetic coupling. The alternating current power driver converts power received from a power supply into alternating current power, which can be transmitted from the power transmitting-side antenna to the power receiving-side antenna. The matching circuit is provided between the alternating current power driver and the power transmitting-side antenna, and is capable of adjusting the impedance of a transmission path. The control circuit, which controls the alternating current power driver and the matching circuit, performs impedance matching by controlling the matching circuit, in a state wherein the alternating current power driver is controlled such that the frequency of the alternating current power is equal to the resonance frequency of the power transmitting-side antenna.
Inventors:
YAMAKAWA Hiroyuki (19-12, Sotokanda 2-chom, Chiyoda-ku Tokyo 21, 〒1010021, JP)
山川 博幸 (〒21 東京都千代田区外神田２丁目１９番１２号 株式会社エクォス・リサーチ内 Tokyo, 〒1010021, JP)
ITO Yasuo (19-12, Sotokanda 2-chom, Chiyoda-ku Tokyo 21, 〒1010021, JP)
山川 博幸 (〒21 東京都千代田区外神田２丁目１９番１２号 株式会社エクォス・リサーチ内 Tokyo, 〒1010021, JP)
ITO Yasuo (19-12, Sotokanda 2-chom, Chiyoda-ku Tokyo 21, 〒1010021, JP)
Application Number:
JP2011/051386
Publication Date:
August 04, 2011
Filing Date:
January 26, 2011
Export Citation:
Assignee:
EQUOS RESEARCH CO., LTD. (19-12, Sotokanda 2-chome Chiyoda-ku Tokyo, 21, 〒1010021, JP)
株式会社エクォス・リサーチ (〒21 東京都千代田区外神田２丁目１９番１２号 Tokyo, 〒1010021, JP)
YAMAKAWA Hiroyuki (19-12, Sotokanda 2-chom, Chiyoda-ku Tokyo 21, 〒1010021, JP)
山川 博幸 (〒21 東京都千代田区外神田２丁目１９番１２号 株式会社エクォス・リサーチ内 Tokyo, 〒1010021, JP)
株式会社エクォス・リサーチ (〒21 東京都千代田区外神田２丁目１９番１２号 Tokyo, 〒1010021, JP)
YAMAKAWA Hiroyuki (19-12, Sotokanda 2-chom, Chiyoda-ku Tokyo 21, 〒1010021, JP)
山川 博幸 (〒21 東京都千代田区外神田２丁目１９番１２号 株式会社エクォス・リサーチ内 Tokyo, 〒1010021, JP)
International Classes:
H02J17/00; B60L11/18
Attorney, Agent or Firm:
NEXT INTERNATIONAL (7th Floor, Daiei Building 11-20, Nishiki 1-chome, Naka-ku, Nagoya-sh, Aichi 03, 〒4600003, JP)
Claims: