Smart battery selector offering power conversion internally with

Details Smart battery selector offering power conversion internally with Smart battery selector offering power conversion internally with

1997-05-02

1999-05-11

Sheikh, Ayaz R.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320106, 320124, 320128, 320134, 320162, 320164, 307 64, G06F1/00

Patent

active

059037644

ABSTRACT:
A controller for a smart battery selector included in a portable device has a plurality of switch-drivers at least equal to a plurality of smart batteries. The batteries provide battery-state data via a bus to a host computer included in the portable device. Each switch-driver effects selection of an associated battery. A control electronic-circuit in the controller directs operation of the switch-drivers for selecting the battery so that at any instant only one battery powers the portable device. A bus-snooper circuit permits the controller to independently monitor the bus for battery-condition alarm-messages. The controller may respond to such messages by selecting a different battery. The controller may also select a single battery for recharging, and may terminate charging upon receiving a battery overcharge message.

REFERENCES:
patent: 5565759 (1996-10-01), Dunstan
patent: 5606242 (1997-02-01), Hull et al.
patent: 5640078 (1997-06-01), Kou et al.
patent: 5684384 (1997-11-01), Barkat et al.
patent: 5734254 (1998-03-01), Stephens
System Management Bus Specification, Revision 1.0, Feb. 15, 1995, Copyright 1996.
System Management Bus BIOS Interface Specification, Revision 1.0, Feb. 15, 1995, Copyright 1996.
Smart Battery Charger Specification, Revision 1.0, Jun. 27, 1996, Copyright 1996.
Smart Battery Data Specification, Revision 1.0, Feb. 15, 1995, Copyright 1996.
Smart Battery Selector Specification, Revision 1.0, Sep. 5, 1996, Copyright 1996.

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