Title:
CHARGING DEVICE OF ELECTRONIC APPARATUS, AND CHARGING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/005021
Kind Code:
A1
Abstract:
In order to suppress the effect of path resistance and to enable rapid charging, the disclosed charging device (4) charges an electricity storage body (28) from the outside through connectors (26, 42) to an electronic apparatus (2) incorporating the electricity storage body within a casing (21), and is provided with: a power source unit (41) that supplies charging power; a voltage detection unit (43) that detects the voltage of the electricity storage body; a current detection unit (44) that detects charging current; and a charging control unit (45) that performs constant-current charging until reaching a target voltage (V1) and then switches to constant-voltage charging. By means of the voltage detection unit, the charging control unit detects the voltage change (ΔV) of the electricity storage body when changing the value of the current between at least two values at the time of starting constant-current charging, and in accordance with amount of voltage change of the electricity storage body, performs charging control by correcting the target voltage value or the value of the voltage detected by the voltage detection unit.
Inventors:
MISAWA, Takao (INC. 1, Sakura-machi, Hino-sh, Tokyo 11, 〒1918511, JP)
Application Number:
JP2011/054467
Publication Date:
January 12, 2012
Filing Date:
February 28, 2011
Export Citation:
Assignee:
KONICA MINOLTA MEDICAL & GRAPHIC, INC. (1 Sakura-machi, Hino-shi Tokyo, 11, 〒1918511, JP)
コニカミノルタエムジー株式会社 (〒11 東京都日野市さくら町１番地 Tokyo, 〒1918511, JP)
コニカミノルタエムジー株式会社 (〒11 東京都日野市さくら町１番地 Tokyo, 〒1918511, JP)
International Classes:
H02J7/10; G03B42/04
Attorney, Agent or Firm:
KOYO INTERNATIONAL PATENT FIRM (Nikko Kagurazaka Bldg, 18 Iwatocho, Shinjuku-k, Tokyo 32, 〒1620832, JP)
Claims: