Battery monitoring unit having a sense FET circuit arrangement

Details Battery monitoring unit having a sense FET circuit arrangement Battery monitoring unit having a sense FET circuit arrangement

1998-02-23

1999-11-02

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

320136, H01M 1046

Patent

active

059777516

ABSTRACT:
A battery monitoring unit is provided with a semiconductor power switch, which is looped into the battery lead and can serve for interrupting the battery current in a controlled manner. The battery monitoring unit comprises a sense FET circuit arrangement, which determines the battery current bidirectionally and the power FET part of which forms the semiconductor power switch, which is looped into the battery lead. Aside from the controllable interruption of battery current, a bidirectional determination of battery current and, with that, a continuous monitoring of the charge state of the battery is possible with this circuit arrangement, and can be used for monitoring vehicle batteries.

REFERENCES:
patent: 5084633 (1992-01-01), Izadinia
patent: 5142215 (1992-08-01), Mathison
patent: 5583384 (1996-12-01), Henry

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