Remaining-capacity dispersion detecting apparatus and...

Details Remaining-capacity dispersion detecting apparatus and... Remaining-capacity dispersion detecting apparatus and...

2007-07-05

2010-02-02

Tso, Edward (Department: 2858)

Electricity: measuring and testing

Electrolyte properties

Using a battery testing device

C320S116000, C320S118000, C320S132000, C324S434000

Reexamination Certificate

active

07656163

ABSTRACT:
A remaining-capacity dispersion detecting apparatus for a battery pack having a plurality of cells includes a total voltage sensing section adapted to sense a total voltage which is a terminal voltage of the whole of battery pack; a storing section adapted to store a value of the total voltage when the battery pack becomes under unloaded condition from loaded condition; and a dispersion detecting section. The dispersion detecting section is adapted to detect a value of the total voltage at a time of activation before the battery pack becomes under the loaded condition from the unloaded condition, to compare the currently-detected total voltage value with the total voltage value previously stored by the storing section, and to detect a dispersion in respective remaining capacities of the plurality of cells in the case where a difference between the currently-detected total voltage value and the previously-stored total voltage value is greater than or equal to a predetermined value.

REFERENCES:
patent: 6417648 (2002-07-01), Suzuki et al.
patent: 6661231 (2003-12-01), Arai et al.
patent: 7332891 (2008-02-01), Sugimoto
patent: 2004-297852 (2004-10-01), None

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