Title:
充電制御方法及び電子機器
Document Type and Number:
Japanese Patent JP4668957
Kind Code:
B2
Abstract:
A remaining charge predicting method which improves the precision of predicting the remaining charge of a rechargeable battery. A battery pack has a measuring circuit which monitors a charge current, discharge current, the voltage of the rechargeable battery and the temperature of the battery. The measuring circuit notifies a power management microcomputer, provided in a portable device, of the measured current, voltage and temperature. The power management microcomputer predicts the remaining charge of the battery based on the received measured values. The battery pack does not perform data processing for predicting the remaining charge.
Inventors:
Hidekiyo Ozawa
Shigeho Tanaka
Shigeho Tanaka
Application Number:
JP2007179408A
Publication Date:
April 13, 2011
Filing Date:
July 09, 2007
Export Citation:
Assignee:
Fujitsu Semiconductor Limited
International Classes:
G01R31/36; H02J7/00; H01M10/44; H01M10/48; H02J7/04
Domestic Patent References:
| JP2002051478A | ||||
| JP11317246A |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda