US 12,230,976 B2
Magnetic resonance wireless power transfer device
Hiroki Ishida, Okayama (JP)
Assigned to KAKE EDUCATIONAL INSTITUTION, Okayama (JP); and ADTEX INC., Gunma (JP)
Appl. No. 18/263,581
Filed by KAKE EDUCATIONAL INSTITUTION, Okayama (JP); and ADTEX INC., Gunma (JP)
PCT Filed Feb. 4, 2022, PCT No. PCT/JP2022/004443
§ 371(c)(1), (2) Date Jul. 31, 2023,
PCT Pub. No. WO2022/168945, PCT Pub. Date Aug. 11, 2022.
Claims priority of application No. 2021-018613 (JP), filed on Feb. 8, 2021.
Prior Publication US 2024/0120775 A1, Apr. 11, 2024
Int. Cl. H02J 50/12 (2016.01)
CPC H02J 50/12 (2016.02) 8 Claims
OG exemplary drawing
 
1. A magnetic resonance wireless power transfer device, wherein
a negative resistance circuit,
a transmitter resonant circuit having a transmitter coil, and
a receiver resonant circuit having a receiver coil are configured so that a parity-time symmetry is preserved, and wherein
out of two resonant loops (hereinafter referred to as “Loop I” and “Loop II”) in which a resonant current is circulatable when the transmitter resonant circuit and the receiver resonant circuit are regarded as a double resonant circuit coupled with a mutual inductance, Q value of the Loop II is set to be higher than Q value of the Loop I, so that oscillation occurs in a loop in which a leakage inductance component of the coil and a capacitance component of a capacitor resonate.