Circuit to prevent excessive rechargeable battery discharge

Details Circuit to prevent excessive rechargeable battery discharge Circuit to prevent excessive rechargeable battery discharge

1994-08-04

1995-12-19

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 14, 320 39, 320 40, H01M 1044

Patent

active

054771242

ABSTRACT:
A circuit effectively prevents excessive discharge of a rechargeable battery that is either detachable from, or internal to an electrical apparatus. The circuit has a battery voltage detector, a comparitor to compare the battery voltage with a reference voltage, and a controller to cut-off power drain from a discharged battery when its voltage drops below the reference voltage. The discharged battery is electrically cut-off from both the load and the comparitor.

REFERENCES:
patent: 3800207 (1974-03-01), Kott
patent: 4704542 (1987-11-01), Hwang
patent: 5177426 (1993-01-01), Nakanishi et al.
patent: 5179337 (1993-01-01), Staarman et al.

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