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Patent Searching and Data


Title:
CONTACTLESS POWER SUPPLY DEVICE, CONTACTLESS POWER RECEIVING DEVICE, AND CONTACTLESS POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/213514
Kind Code:
A1
Abstract:
This contactless power supply device, which supplies power contactlessly to a vehicle, comprises a power transmission resonance circuit (110), a power supply circuit (130) that supplies DC power, and a power transmission circuit (120) that coverts DC power of the power supply circuit to AC power and supplies the AC power to the power transmission resonance circuit. The power transmission circuit comprises an inverter circuit (122) that converts DC power of the power supply circuit to AC power, and a power-transmission-side immitance conversion circuit (124) that adjusts the AC power of the inverter circuit and supplies the adjusted AC power to the power transmission resonance circuit. The ratio of a characteristic impedance Z01 of the power-transmission-side immitance conversion circuit to a latter-stage-side impedance Z2, the power transmission resonance circuit side being seen from the power-transmission-side immitance conversion circuit, is adjusted so that the high harmonic component of the AC power of the inverter circuit decreases.

Inventors:
TAKAHASHI MASAYA (JP)
NAKAYASHIKI YUUSEI (JP)
TAKAHASHI EISUKE (JP)
KANESAKI MASAKI (JP)
UDA KAZUHIRO (JP)
YAMAGUCHI NOBUHISA (JP)
Application Number:
PCT/JP2020/016001
Publication Date:
October 22, 2020
Filing Date:
April 09, 2020
Export Citation:
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Assignee:
DENSO CORP (JP)
International Classes:
H02J50/12; H02J7/00; H02J50/90
Domestic Patent References:
WO2017042904A12017-03-16
Foreign References:
JP2014514901A2014-06-19
JP2002049428A2002-02-15
JP2014533481A2014-12-11
JP2017070062A2017-04-06
Attorney, Agent or Firm:
TOKKYO GYOMUHOJIN MEISEI INTERNATIONAL PATENT FIRM (JP)
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