Power transmission of a desk with a cord-free power supply

Author

Hatanaka, Koichi ; Sato, Fumihiro ; Matsuki, Hidetoshi ; Kikuchi, Shinki ; Murakami, Jun-ichi ; Kawase, Makoto ; Satoh, Tadakuni

Author_Institution

Dept. of Electr. Eng., Tohoku Gakuin Univ., Tagajo, Japan

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

3329

Lastpage

3331

Abstract

The battery is an indispensable component of portable electronic equipment, but charging is often inconvenient. A contactless electric power supply, such as the desk-type contactless power station (CLPS) we propose, significantly improves the ease of charging such equipment. In this system, primary coils are embedded into the desk surface to efficiently supply electrical power to portable equipment placed on the desk. Only the primary and the secondary coils facing each other work as a power transmitter. We have confirmed that electric power transmission with efficiency of 85 ± 5% can be attained anywhere on the desk. This examination reveals the effectiveness of using several primary coils.

Keywords

battery chargers; coils; power supplies to apparatus; power transmission; 80 to 90 percent; contactless electric power supply; cord-free power supply; desk power transmission; desk surface; desk-type contactless power station; ease of charging; efficiency; electric power transmission; embedded primary coils; portable equipment; power transmitter; secondary coils; several primary coils; Batteries; Circuits; Coils; Contacts; Electronic equipment; Magnetic flux; Magnetic materials; Power generation; Power supplies; Power transmission;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.803120

Filename

1042542