Battery charging safety circuit for simultaneous startup and...

Details Battery charging safety circuit for simultaneous startup and... Battery charging safety circuit for simultaneous startup and...

2005-10-25

2005-10-25

Sparks, Donald (Department: 2187)

Electricity: battery or capacitor charging or discharging

Battery or cell charging

With detection of current or voltage amplitude

C320S134000

Reexamination Certificate

active

06958591

ABSTRACT:
A safety circuit monitors a charging signal supplied by a charging circuit for charging a battery. Damage to the battery may occur when the voltage at the input terminal of the battery rises above the safe level for the battery. A voltage drop across a coupling circuit is used to generate an activation signal. The activation signal causes a power amplifier to lower the voltage of the charging signal before the charging signal can drive the inductances associated with the battery input terminal and leads to the point where damage to the battery may occur.

REFERENCES:
patent: 5179335 (1993-01-01), Nor
patent: 5672952 (1997-09-01), Szepesi
patent: 6326767 (2001-12-01), Small et al.
patent: 6331763 (2001-12-01), Thomas et al.
patent: 6340880 (2002-01-01), Higashijima et al.
patent: 6573767 (2003-06-01), Caldwell

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