Battery control device for equalization of cell voltages

Details Battery control device for equalization of cell voltages Battery control device for equalization of cell voltages

2006-11-21

2008-10-28

Tso, Edward (Department: 2838)

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

Reexamination Certificate

active

07443138

ABSTRACT:
The battery control device includes: a state detecting means which receives electric power from an on-vehicle low-voltage battery having a supply voltage lower than that of an on-vehicle high-voltage battery composed of a plurality of unit cells connected together in series and detects a state of the on-vehicle high-voltage battery to monitor the on-vehicle high-voltage battery; an equalizing means for equalizing a voltage of each unit cell; and a control means which receives electric power from the on-vehicle low-voltage battery and starts to control the equalizing means in response to turning-off of an ignition switch, wherein the control means cuts electric power supplied from the on-vehicle low-voltage battery to the state detecting means after the turning-off of the ignition switch and before the control means starts to control the equalizing means.

REFERENCES:
patent: 5869950 (1999-02-01), Hoffman et al.
patent: 2002/0167291 (2002-11-01), Imai et al.
patent: 2004/0084232 (2004-05-01), Obayashi
patent: 10-225005 (1998-08-01), None
patent: 2002-199510 (2002-07-01), None
patent: 2003-189490 (2003-07-01), None
patent: 2004-120871 (2004-04-01), None

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