Power transmitting apparatus, power receiving apparatus, and non-contact power transmission system
AssigneeMurata Manufacturing Co., Ltd.
InventorsHironobu Takahashi, Tsutomu Ieki
Life of this patent
Estimating the term…
Abstract
An active electrode and a passive electrode provided in a power transmitting apparatus 10 are connected to an inductor provided on the secondary side of a transformer generating an AC voltage and are respectively coupled to an active electrode and a passive electrode of a power receiving apparatus through electric fields. A ground electrode of the power transmitting apparatus faces the active electrode and the passive electrode and a ground electrode of the power receiving apparatus faces the active electrode and the passive electrode. A plurality of openings are formed in such a manner as to form a lattice in each of the ground electrodes.
Claims20
A power transmitting apparatus for transmitting power to a power receiving apparatus coupled thereto through an electric field, the power transmitting apparatus comprising:
- a ground electrode;
- an AC power supply circuit;
- a first power transmitting electrode coupled to a first end of the AC power supply circuit and having a first surface that faces the ground electrode and overlaps a first region of the ground electrode;
- and
- a second power transmitting electrode coupled to a second end of the AC power supply circuit and having a second surface that faces the ground electrode and overlaps a second region of the ground electrode,
- wherein at least one of the first surface and the second surface has a surface area greater than a corresponding surface area of the first region and the second region of the ground electrode, respectively.
A power receiving apparatus for receiving power from a power transmitting apparatus coupled thereto through an electric field, the power receiving apparatus comprising:
- a ground electrode;
- a first power receiving electrode coupled to a first end of a load circuit and having a first surface that faces the ground electrode and overlaps a first region of the ground electrode;
- and
- a second power receiving electrode coupled to a second end of the load circuit and having a second surface that faces the ground electrode and overlaps a second region of the ground electrode,
- wherein at least one of the first surface and the second surface has a surface area greater than a corresponding surface area of the first region and the second region of the ground electrode, respectively.
A non-contact power transmission system comprising:
- a power transmitting apparatus including:
- a ground electrode,
- an AC power supply circuit,
- a first power transmitting electrode coupled to a first end of the AC power supply circuit and having a first surface that faces the ground electrode and overlaps a first region of the ground electrode, and
- a second power transmitting electrode coupled to a second end of the AC power supply circuit and having a second surface that faces the ground electrode and overlaps a second region of the ground electrode,
- wherein at least one of the first surface and the second surface has a surface area greater than a corresponding surface area of the first region and the second region of the ground electrode, respectively;
- and
- a power receiving apparatus including:
- a first power receiving electrode coupled to a first end of a load circuit and that is coupled through an electric field to the first power transmitting electrode when the power receiving apparatus is positioned adjacent the power transmitting apparatus, and
- a second power receiving electrode coupled to a second end of the load circuit and that is coupled through an electric field to the second power transmitting electrode when the power receiving apparatus is positioned adjacent the power transmitting apparatus.
A non-contact power transmission system comprising:
- a power transmitting apparatus including:
- an AC power supply circuit,
- a first power transmitting electrode coupled to a first end of the AC power supply circuit, and
- a second power transmitting electrode coupled to a second end of the AC power supply circuit;
- and
- a power receiving apparatus including:
- a ground electrode;
- a first power receiving electrode coupled to a first end of a load circuit and that is coupled through an electric field to the first power transmitting electrode, the first power receiving having a first surface that faces the ground electrode and overlaps a first region of the ground electrode;
- and
- a second power receiving electrode coupled to a second end of the load circuit and that is coupled through an electric field to the second power transmitting electrode, the second power receiving electrode having a second surface that faces the ground electrode and overlaps a second region of the ground electrode,
- wherein at least one of the first surface and the second surface has a surface area greater than a corresponding surface area of the first region and the second region of the ground electrode, respectively.
Dependencies are inferred from the claim text.