A prototyped portable charger (the black device under the white mobile device mockup)
The portable charger itself is charged in a non-contact manner.
The charger incorporates a Li-ion secondary battery manufactured by Murata.
Seiko Epson's development roadmap for non-contact charging modules
Seiko Epson Corp and Murata Manufacturing Co Ltd prototyped a portable non-contact charger for mobile devices and exhibited it at Embedded Technology 2008, which took place from Nov 19 to 21, 2008, at Pacifico Yokohama in Yokohama, Kanagawa Prefecture, Japan.
With a built-in Li-ion secondary battery, the prototype can charge mobile devices even when no power outlet is available. It consists of a non-contact charging module developed by Seiko Epson and Murata's quick-charging Li-ion secondary battery.
The charger is a result of the two companies' joint development project for non-contact quick charging technology (See related article). It is only a prototype, and the timing of its commercialization, etc, have not yet been decided.
The prototype has a structure where a Li-ion secondary battery with a capacity of about 2000mAh is sandwiched by two types of modules, the "AT150" and the "AT25" manufactured by Seiko Epson. The former is used as a 15W power receiving module, while the latter is used as a 2.5W power transmitting module.
The Li-ion secondary battery of the prototype charger is charged in a non-contact manner on a charging table by using the AT150. And a mobile device is charged by using the AT25 at 2.5W. Both the AT150 and the AT25 have a power transmission efficiency of 70%, according to Seiko Epson.
"The concept (of the prototype) is a portable auxiliary battery," the company said. "It has fewer troubles because it does not use connectors."
Seiko Epson plans to start shipping the AT25 in volume but has not yet decided the mass production schedule of the AT150.
Nikkei Electronics Asia magazine is available each month free of charge to engineers, managers and other qualified readers.
Nikkei Electronics |
Nikkei Monozukuri |
Nikkei Microdevices |
Nikkei Automotive Technology |
|---|---|---|---|
 |
 |
 |
 |
| The magazine for electronics designers and managers. | Design You Won't Regret - How to Reduce the Risk of Accidents | The most comprehensive technical journal for makers and users of LSIs and LCDs. | The comprehensive automotive technology magazine. |
Copyright © 1995-2009 Nikkei Business Publications, Inc. All rights reserved.
All editorial content and graphics on this Web site may not be reproduced in whole or in part without the express permission of the copyright owner.
November 2009
October 2009
September 2009