EQUIPMENT AND METHOD FOR TRANSMITTING ELECTRIC POWER

Title:

EQUIPMENT AND METHOD FOR TRANSMITTING ELECTRIC POWER

Document Type and Number:

WIPO Patent Application WO/1998/034319

Kind Code:

A1

Abstract:

A method for increasing a power transmission efficiency from the primary coil side to the secondary coil side in a power transmitter which is so structured that power may be transmitted between a primary coil and a secondary coil. A resonance frequency of the secondary coil side is set higher than a frequency of an oscillation signal at the primary coil side, and thereby a capacitance can be made small and a coupling coefficient between the primary coil and the secondary coil can be made apparently high. By this method, the power transmission efficiency from the primary coil side to the secondary coil side can be increased.

More Like This:

WO/2021/072561	DEVICE FOR THE GENERATION, STORAGE AND DISTRIBUTION OF ELECTRICAL ENERGY
WO/2015/007518	WIRELESS INDUCTIVE POWER TRANSFER.
WO/2017/062123	RADIO FREQUENCY AND OPTICAL READER SCANNING ARRAY

Inventors:

NAGAI TAMIJI (JP)
TAKEI TOSHITAKA (JP)
SUZUKI KUNIHARU (JP)

Application Number:

PCT/JP1998/000441

Publication Date:

August 06, 1998

Filing Date:

February 03, 1998

Export Citation:

Click for automatic bibliography generation Help

Assignee:

SONY CORP (JP)
NAGAI TAMIJI (JP)
TAKEI TOSHITAKA (JP)
SUZUKI KUNIHARU (JP)

International Classes:

H02J5/00; H04W52/00; H04W88/00; (IPC1-7): H02J17/00

Foreign References:

US4001665A	1977-01-04
US4331225A	1982-05-25
US4654880A	1987-03-31
EP0200321A2	1986-11-05
US4679560A	1987-07-14
US4802080A	1989-01-31
EP0473957A2	1992-03-11
US5428521A	1995-06-27
GB2307379A	1997-05-21

Other References: