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Patent Searching and Data


Title:
COIL, COIL PAIR, POWER TRANSMITTING DEVICE AND POWER RECEIVING DEVICE, AND POWER TRANSMISSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/172331
Kind Code:
A1
Abstract:
Provided is a coil for contactless power transmission, said coil being capable of reducing the resonant frequency thereof caused by each inter-coil parasitic capacitance. The coil is provided with a series connection formed by connecting at least a coil CL1-1 wound from the outer peripheral side toward the inner peripheral side and another coil wound from the inner peripheral side toward the outer peripheral side in the same winding direction as that of the coil CL1-1. The coil CL1-1 and the another coil are overlapped with each other with a film BF1 sandwiched therebetween so that the winding of the coil CL1-1 and the winding of the another coil are overlapped with each other. Both ends of the series connection are respectively served as, for example, connection terminals O1-1.

Inventors:
OKABE Masato (1-1, Ichigaya-kagacho 1-chome, Shinjuku-k, Tokyo 01, 〒1628001, JP)
Application Number:
JP2019/008929
Publication Date:
September 12, 2019
Filing Date:
March 06, 2019
Export Citation:
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Assignee:
DAI NIPPON PRINTING CO., LTD. (1-1 Ichigaya-kagacho 1-chome, Shinjuku-ku Tokyo, 01, 〒1628001, JP)
International Classes:
H01F27/28; H01F17/00; H01F38/14; H02J7/00; H02J50/10
Attorney, Agent or Firm:
INTECT INTERNATIONAL PATENT OFFICE et al. (Daiwa Kojimachi 4-chome Bldg. 4F, 4-7-2 Kojimachi, Chiyoda-k, Tokyo 83, 〒1020083, JP)
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