WIRELESS POWER TRANSMISSION SYSTEM, WIRELESS POWER-TRANSMITTING CIRCUIT, AND WIRELESS POWER-RECEIVING CIRCUIT

WIPO Patent Application WO/2024/053376

A1

This wireless power transmission system comprises: a wireless power-transmitting circuit comprising an inverter (2) that includes a first LC resonant circuit (21) including a power-transmitting inductor (Lt), the inverter (2) switching an input voltage at a prescribed switching frequency and a prescribed duty ratio, and transmitting a switched AC voltage from the power-transmitting inductor (Lt); and a wireless power-receiving circuit. The wireless power-receiving circuit comprises: a rectification circuit (3) that includes a second LC resonant circuit (31) that includes a power-receiving inductor (Lr) that is electromagnetically coupled to the power-transmitting inductor (Lt), the rectification circuit (3) rectifying the AC voltage received by the power-receiving inductor and outputting the rectified voltage; and a regulator (4) that detects an output voltage from the regulator (4), controls the rectified voltage on the basis of the detected output voltage such that the output voltage becomes a prescribed voltage, and outputs the output voltage.

MISHIMA TAICHI (JP)
ITO YUKI (JP)
OTA HIROAKI (JP)
NAGAOKA SHINGO (JP)
UEMATSU TAKESHI (JP)
SEKIYA HIROO (JP)
KOMIYAMA YUTARO (JP)

PCT/JP2023/029990

March 14, 2024

August 21, 2023

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OMRON TATEISI ELECTRONICS CO (JP)
UNIV CHIBA NAT UNIV CORP (JP)

H02J50/12; H02M3/335; H02M7/537; H02J7/00

WO2018185810A1

2018-10-11

JP2021530946A	2021-11-11
US6301128B1	2001-10-09
JP2017022804A	2017-01-26
US20210135666A1	2021-05-06
US20170324277A1	2017-11-09

YAMAO, Norihito et al. (JP)

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