Method and system to stop return current from flowing into a...

Details Method and system to stop return current from flowing into a... Method and system to stop return current from flowing into a...

2011-08-02

2011-08-02

Paladini, Albert W (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Connecting or disconnecting

C307S127000

Reexamination Certificate

active

07989985

ABSTRACT:
A battery return disconnect (“BRD”) circuit for use with a battery supply having a plurality of electrically parallel inter-connecting batteries. The BRD circuit includes a plurality of DC input ports, a set of OR-ing diodes, a plurality of polarity detectors and a plurality of switches. Each input port includes a DC input terminal and a DC return terminal. Each OR-ing diode is connected to a DC input terminal or a DC return terminal and is forward-biased to when the BRD circuit is connected to a plurality of batteries having substantially the same voltage level. Each polarity detector monitors the bias of an OR-ing diode electrically connected to a corresponding DC input terminal. Each switch is connected to a DC return terminal and a polarity detector. Each switch is closed as long as the monitored OR-ing diode is forward-biased and open when the monitored OR-ing diode is reverse-biased.

REFERENCES:
patent: 3659183 (1972-04-01), Carlson
patent: 4045769 (1977-08-01), Faller
patent: 4827267 (1989-05-01), Shearin
patent: 5731690 (1998-03-01), Taniquchi et al.
patent: 6278201 (2001-08-01), Brien et al.
patent: 6326772 (2001-12-01), Kusumoto et al.
patent: 7281141 (2007-10-01), Elkayam et al.

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