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Title:
GROUND POWER SUPPLY DEVICE AND WIRING
Document Type and Number:
WIPO Patent Application WO/2024/048061
Kind Code:
A1
Abstract:
A ground power supply device 1 that transmits electric power to a vehicle 5 without contact is provided with a plurality of resonant circuits 20 and one power supply source that supplies AC power of the same frequency to all the resonant circuits. The resonant circuits each have a coil 23 embedded in a road for contactless power transmission, and wiring 22 connecting the coils to a power supply source. The wiring of each resonant circuit has a length that is at least partially different from the wiring in other resonant circuits, and is formed to have a different length so that the parasitic inductance of the wiring is at least partially different from that of the wiring of other resonant circuits. The resonant circuits further include capacitors having different capacitances so that the resonant frequencies of all resonant circuits are equal even if the parasitic inductances of the wirings are different.

Inventors:
KIMURA KAZUTAKA (JP)
HASHIMOTO TOSHIYA (JP)
HASHIMOTO MAKOTO (JP)
YAMAGUCHI NOBUHISA (JP)
TANI KEISUKE (JP)
KANESAKI MASAKI (JP)
OBAYASHI KAZUYOSHI (JP)
TAKEMURA YUICHI (JP)
Application Number:
PCT/JP2023/024614
Publication Date:
March 07, 2024
Filing Date:
July 03, 2023
Export Citation:
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Assignee:
TOYOTA MOTOR CO LTD (JP)
DENSO CORP (JP)
International Classes:
B60L53/12; H02J50/12; H02J50/40
Domestic Patent References:
WO2021117507A12021-06-17
Foreign References:
JP2011121456A2011-06-23
JP2017005772A2017-01-05
JP2019526219A2019-09-12
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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