PORTABLE TERMINAL HAVING A PLURALITY OF BATTERIES

Title:

PORTABLE TERMINAL HAVING A PLURALITY OF BATTERIES

Document Type and Number:

Japanese Patent JP2004208344

Kind Code:

A

Abstract:

To provide a portable terminal having a plurality of batteries, which improves energy efficiency by enabling a long time of driving while keeping the downsizing of a battery for driving itself.

A power source 101 and a power source 151 are independent batteries stored in the portable terminal 100. The battery 101 supplies voltage only to its first functional circuit 102 which requires temporally constant current consumption. Likewise, the battery 151 supplies voltage only to its second functional circuit 152 which requires temporally changing current consumption. For the battery 101, a battery suitable to a temporally large current output is used, and for the battery 151, a battery suitable to the output of a temporally changing current is used.

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Inventors:

TOYODA TAKEHIKO
YOSHIDA HIROSHI
SUMINO HIROYASU
MIYAMOTO HIROHISA
YAMAUCHI TAKASHI

Application Number:

JP2002371264A

Publication Date:

July 22, 2004

Filing Date:

December 24, 2002

Export Citation:

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Assignee:

TOSHIBA CORP

International Classes:

H01M8/00; H01M10/44; H01M10/48; H02J7/34; H04M1/73; H02J7/00; (IPC1-7): H02J7/00; H01M8/00; H01M10/44; H01M10/48; H02J7/34; H04M1/73

Attorney, Agent or Firm:

Hideaki Togawa

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