Wireless power transfer system
AssigneesMurata Manufacturing Co., Ltd., National University Corporation Toyohashi University of Technology
InventorsHiromasa Saeki, Masaya Tamura, Yoshinobu Tamura, Suzuka Akai
Life of this patent
Estimating the term…
Abstract
A wireless power transfer system includes a cavity resonator entirely surrounded by an electromagnetic wave shielding member having appropriate conductivity and frequency selectivity; at least one power reception unit; at least one power transmission unit; and at least one resonator (e.g., a resonant network). In an equivalent circuit of the wireless power transfer system from a power transmission circuit of the power transmission unit to a power reception circuit of the power reception unit, N (N≥2) resonators including the cavity resonator are connected in series via an inverter on a power transmission route from the power transmission circuit to the power reception circuit.
Claims16
A wireless power transfer system comprising:
- a cavity resonator entirely surrounded by an electromagnetic wave shield having appropriate conductivity and frequency selectivity;
- at least one power receiver;
- at least one power transmitter;
- and
- at least one resonator,
- wherein in an equivalent circuit of the wireless power transfer system from a power transmission circuit of the power transmitter to a power reception circuit of the power receiver, N (N≥2) resonators including the cavity resonator are connected in series via an inverter on a power transmission route from the power transmission circuit to the power reception circuit, and
- the at least one resonator includes one or more resonators between the cavity resonator and the power transmission circuit.
A wireless power transfer system comprising:
- a cavity resonator entirely surrounded by an electromagnetic wave shield having appropriate conductivity and frequency selectivity;
- at least one power receiver;
- at least one power transmitter;
- and
- at least one resonator,
- wherein in an equivalent circuit of the wireless power transfer system from a power transmission circuit of the power transmitter to a power reception circuit of the power receiver, N (N≥2) resonators including the cavity resonator are connected in series via an inverter on a power transmission route from the power transmission circuit to the power reception circuit, and
- the at least one resonator includes one or more resonators between the cavity resonator and the power reception circuit, and also includes one or more resonators between the cavity resonator and the power transmission circuit, thus satisfying N≥3.
Dependencies are inferred from the claim text.