Circuit system for a battery electronic control unit

Details Circuit system for a battery electronic control unit Circuit system for a battery electronic control unit

2005-02-08

2008-12-30

Ullah, Akm E (Department: 2838)

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

C320S118000, C320S119000, C320S120000, C320S121000, C320S122000, C320S123000

Reexamination Certificate

active

07471064

ABSTRACT:
A battery ECU controls a main battery composed of a plurality of battery cells connected to each other in series. The battery cells are grouped into cell blocks each having a cell-block monitor circuit. A control unit controls charging/discharging processes on the basis of signals output by the cell-block monitor circuit. A signal output by a cell-block monitor circuit on a high-voltage side turns on a transistor for propagating a signal to a cell-block monitor circuit on a middle-voltage side. In the cell-block monitor circuit on a middle-voltage side, the propagated signal turns on another transistor for further propagating a signal to a cell-block monitor circuit on a low-voltage side. In the cell-block monitor circuit on a low-voltage side, the propagated signal turns on a further transistor for outputting a signal to a control unit.

REFERENCES:
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patent: 6281660 (2001-08-01), Abe
patent: 6362627 (2002-03-01), Shimamoto et al.
patent: 6411912 (2002-06-01), Sack
patent: 6667607 (2003-12-01), Kawamura et al.
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patent: A-2001-258148 (2001-09-01), None
Maxim Integrated Products, Datasheet for MAX1894, Apr. 2002, Ver. 0, pp. 1-16.
Maxim Integrated Products, Application Note 760, Jun. 18, 2001, pp. 1-7.
Office Action dated Apr. 4, 2008 in corresponding Japanese Patent Application No. 2004-062149 (and English translation).

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