Over-discharge protection for rechargeable batteries

Details Over-discharge protection for rechargeable batteries Over-discharge protection for rechargeable batteries

1991-11-13

1993-01-12

Stephan, Steven L.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 40, H02J 700

Patent

active

051793377

ABSTRACT:
Field-effect transistor coupled to conduct current from a rechargeable battery to a load so long as the voltage potential across the rechargeable battery is sufficient to turn on the field-effect transistor to prevent the rechargeable battery discharging below a predetermined value, thereby protecting the rechargeable battery from permanent damage from overdischarge.

REFERENCES:
patent: 3721887 (1973-03-01), Nickerson
patent: 4056765 (1977-11-01), Scheidler et al.
patent: 4291266 (1981-09-01), Portmann
patent: 4302791 (1981-11-01), Buchanan et al.
patent: 4342953 (1982-08-01), Collins
patent: 4546302 (1985-10-01), Smith
patent: 4698578 (1987-10-01), Mullersman et al.
patent: 4704542 (1987-11-01), Hwang
patent: 4785229 (1988-11-01), Edwards
patent: 4845391 (1989-07-01), Gulczynski
patent: 4857985 (1989-08-01), Miller
patent: 4980746 (1990-12-01), Harrington, III

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