Title:
ワイヤレス送電装置、充電器
Document Type and Number:
Japanese Patent JP7361483
Kind Code:
B2
Abstract:
A transmission coil used in a wireless power transmitter includes a first coil, a second coil electrically connected in series with the first coil, and a tap provided at a connection node of the first coil and the second coil, the first coil and the second coil being stacked to at least partially overlap with each other. A transmission antenna includes the transmission coil, a first capacitor and a second capacitor connected in series with the transmission coil, and a switch provided in parallel to a series connection circuit of the second coil of the transmission coil and the second capacitor. A wireless power transmitter includes the transmission antenna and a bridge circuit that drives the transmission antenna. A charger includes the wireless power transmitter.
Inventors:
Daisuke Uchimoto
Application Number:
JP2019065944A
Publication Date:
October 16, 2023
Filing Date:
March 29, 2019
Export Citation:
Assignee:
ROHM Co., Ltd.
International Classes:
H02J50/40; H01F27/28; H01F38/14; H02J7/00; H02J50/12
Domestic Patent References:
| JP2013239590A | ||||
| JP2011259534A | ||||
| JP2018509128A |
Foreign References:
| WO2015097813A1 |
Attorney, Agent or Firm:
Kenki Morishita
Taiki Maya
Taiki Maya
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