Charge-discharge control circuit, over-charge prevention circuit

Details Charge-discharge control circuit, over-charge prevention circuit Charge-discharge control circuit, over-charge prevention circuit

1997-01-16

1999-03-09

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

Having variable number of cells or batteries in series

H01M 1046

Patent

active

058805753

ABSTRACT:
The charge-discharge control circuit prevents over-charge and over-discharge of a plurality of series connected batteries. It is provided with a detection circuit to determine the state of charge and discharge of the batteries, at least one bypass circuit connected in parallel with one of the batteries, and a connection circuit which, in response to results from the detection circuit, selectively connects the bypass circuit to a battery determined to be in an approximately fully charged state or approximately fully discharged state.

REFERENCES:
patent: 5180641 (1993-01-01), Burns et al.
patent: 5206578 (1993-04-01), Nor
patent: 5498950 (1996-03-01), Ouwerkerk
patent: 5656915 (1997-08-01), Eaves

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