【発明の名称】充電装置及び充電方法

Title:

【発明の名称】充電装置及び充電方法

Document Type and Number:

Japanese Patent JPH0813169

Kind Code:

B2

Abstract:

A charging apparatus includes a microcomputer which turns a transistor on so as to supply a charging current from a constant current source to a battery pack incorporating a secondary battery. The microcomputer counts a time required for increasing a battery voltage of the secondary battery, which is outputted from an A/D converter, by a predetermined value, and predicts a time during when the battery voltage will be subsequently increased by the predetermined value. If the battery voltage is not increased by the predetermined value within a predicted time, the microcomputer determines that the battery voltage reaches a peak value thereof and turns the transistor off to terminate a charge. The charging apparatus is suitable for a rapid charge of Ni-MH batteries.

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Inventors:

Ishiguro Kazutoshi
Makoto Nojima

Application Number:

JP15482191A

Publication Date:

February 07, 1996

Filing Date:

June 26, 1991

Export Citation:

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Assignee:

Sanyo Electric Co., Ltd.
Tottori Sanyo Electric Co.,Ltd.

International Classes:

H02J7/04; H02J7/00; H02J7/10; (IPC1-7): H02J7/10

Domestic Patent References:

JP63190525A
JP63206124A
JP61116938A

Attorney, Agent or Firm:

Koji Yasutomi (1 person outside)

Next Patent: ETCHING METHOD AND DEVICE