Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific quantity comparison means
Reexamination Certificate
2011-08-02
2011-08-02
Jackson, Stephen W (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific quantity comparison means
C361S091100
Reexamination Certificate
active
07990669
ABSTRACT:
Provided is a battery protection circuit and a battery device which may be manufactured at lower cost. Before all terminals of a battery protection circuit are each connected to batteries, even when a logical circuit malfunctions by an operation of a parasitic bipolar transistor formed by P-wells due to a connection order in which the batteries are connected, the logical circuit is reset by an operation of a parasitic bipolar transistor formed by the P-wells. For this reason, a charge/discharge path of the batteries is not interrupted due to the connection order. Accordingly, no limitation is placed on the connection order.
REFERENCES:
patent: 4714868 (1987-12-01), Maruyama et al.
patent: 7619386 (2009-11-01), Sasaki et al.
patent: 2006/0076934 (2006-04-01), Ogata et al.
patent: 2008/0169785 (2008-07-01), Kim
patent: 2000-295777 (2000-10-01), None
Koike Toshiyuki
Sakurai Atsushi
Sano Kazuaki
Tange Yoshihisa
Yoshikawa Kiyoshi
Brinks Hofer Gilson & Lione
Jackson Stephen W
Seiko Instruments Inc.
Willoughby Terrence R
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