Detection device, power reception device, power transmission device and non-contact power supply system
AssigneeSony Corporation
InventorsTakashi Miyamoto, Hiroaki Nakano, Tomomichi Murakami
Life of this patent
Estimating the term…
Abstract
A detection device, including: one or a plurality of magnetic coupling elements configured to have one or a plurality of coils; and a detection unit that measures or calculates an effective resistance values of the magnetic coupling elements or an effective resistance value of a circuit including at least the magnetic coupling elements and determines a presence or absence of a foreign substance based on a change in the effective resistance value.
Claims14
A detection device, comprising:
- one or a plurality of magnetic coupling elements configured to have one or a plurality of coils;
- and
- a detection unit that measures or calculates an effective resistance value of a magnetic coupling element, of the one or the plurality of magnetic coupling elements, or of a circuit including at least the magnetic coupling element and determines a presence or absence of a foreign substance based on a change in the effective resistance value.
A power reception device, comprising:
- a power reception coil used for a non-contact power supply from the power supply source;
- one or a plurality of magnetic coupling elements configured to have one or a plurality of coils;
- and
- a detection unit that measures or calculates an effective resistance value of a magnetic coupling element, of the one or the plurality of magnetic coupling elements, or of a circuit including at least the magnetic coupling element and determines a presence or absence of a foreign substance based on a change in the effective resistance value.
A power transmission device, comprising:
- a power transmission coil used for a non-contact power supply to the power supply destination;
- one or a plurality of magnetic coupling elements configured to have one or a plurality of coils;
- and
- a detection unit that measures or calculates an effective resistance value of a magnetic coupling element, of the one or the plurality of magnetic coupling elements, or of a circuit including at least the magnetic coupling element and determines a presence or absence of a foreign substance based on a change in the effective resistance value.
A non-contact power supply system configured to include a power transmission device used for a non-contact power supply to the power supply destination and a power reception device receiving a power in a non-contact manner from the power transmission device,
- wherein at least any one of the power transmission device and the power reception device configured includes:
- one or a plurality of magnetic coupling elements configured to have one or a plurality of coils;
- and
- a detection unit that measures or calculates an effective resistance value of a magnetic coupling element, of the one or the plurality of magnetic coupling elements, or of a circuit including at least the magnetic coupling element and determines a presence or absence of a foreign substance based on a change in the effective resistance value.
Dependencies are inferred from the claim text.