Low power enable circuit

Details Low power enable circuit Low power enable circuit

1999-07-16

2000-11-07

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

320136, H01M 1046, H01M 1044

Patent

active

061441864

ABSTRACT:
This invention is a system and method for causing a rechargeable battery pack to enter a low power mode. The system includes a resistive divider, a switch, a battery cell, and a safety integrated circuit. When an external voltage is applied to the resistive divider, the switch turns on. With the switch on, the safety integrated circuit senses only a fraction of the cell voltage and therefore puts the battery pack into a low power, or sleep mode. The battery is returned to normal mode by connecting a charger to the battery pack.

REFERENCES:
patent: 4709202 (1987-11-01), Koenck et al.
patent: 5563496 (1996-10-01), McClure
patent: 5633573 (1997-05-01), Van Pituoc et al.
patent: 5965997 (1999-10-01), Alwardi et al.

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