Title:
NON-CONTACT POWER SUPPLY DEVICE, NON-CONTACT POWER-RECEIVING DEVICE, AND NON-CONTACT POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2015/198602
Kind Code:
A1
Abstract:
A power supply device (20), provided with an excitation circuit (22) and a power supply coil (23). The excitation circuit (22) inverts the polarity of an input voltage from a rectifying and smoothing circuit (21) in response to a PWM signal in which the duty ratio repeatedly increases and decreases at a period of an AC voltage to be applied from a power-receiving device (30) to a load (40), thereby generating an excitation current applied to the power supply coil (23). The power-receiving device (30) is provided with a power-receiving coil (31) and a filter circuit (32). The filter circuit (32) attenuates, from an AC waveform generated by electromagnetic induction in the power-receiving coil (31), frequency components corresponding to a frequency higher than that of the AC voltage to be applied to the load (40).
Inventors:
AKIYAMA TOSHIHIRO
TSUJIMOTO TOYOHIKO
KOHARA HIROSHI
ABE HIDEAKI
TSUJIMOTO TOYOHIKO
KOHARA HIROSHI
ABE HIDEAKI
Application Number:
PCT/JP2015/003182
Publication Date:
December 30, 2015
Filing Date:
June 24, 2015
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02J17/00
Foreign References:
| US20140091635A1 | 2014-04-03 | |||
| JP2014093938A | 2014-05-19 | |||
| JP2005536286A | 2005-12-02 |
Attorney, Agent or Firm:
NISHIKAWA, Yoshikiyo et al. (JP)
Yoshikiyo Nishikawa (JP)
Yoshikiyo Nishikawa (JP)
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