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Title:
POWER RECEPTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/176358
Kind Code:
A1
Abstract:
In order to suppress occurrence of unnecessary leakage flux even when the operation of a power conversion unit stops while current is flowing through a coil of a power reception device, a power reception device 200 is provided with: a secondary coil L2; a resonance coil Lx and a resonance capacitor Cx which are connected to the secondary coil L2 and which constitute, along with the secondary coil L2, a resonance circuit having a prescribed resonance frequency; a power conversion unit 250 that controls AC current i flowing through the resonance circuit, by causing MOS transistors Q1-Q4 to separately execute switching operations; and a buffer coil Ly that is a closed circuit element for selectively forming a closed circuit including the secondary coil L2 but being different from the resonance circuit.

Inventors:
MIYAZAKI Hideki (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
TANAKA Shintaro (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
Application Number:
JP2019/003569
Publication Date:
September 19, 2019
Filing Date:
February 01, 2019
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
H02J50/70; H01F38/14; H02H7/18; H02J7/00; H02J50/12; H02J50/80
Attorney, Agent or Firm:
TODA Yuji (6-1, Marunouchi 1-chome, Chiyoda-k, Tokyo 20, 〒1008220, JP)
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