Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1997-09-30
2000-02-29
Gaffin, Jeffery
Electrical transmission or interconnection systems
Switching systems
Condition responsive
307131, 307126, 307125, 320132, 320134, H01H 3500
Patent
active
060313021
ABSTRACT:
An improved battery management circuit and system are disclosed. The improved battery management system relates to the type having at least one battery cell that is connected in a circuit with battery powered components, a current sensing resistance that is located in series within the circuit, voltage measurement circuitry that measures the voltage that develops across the current sensing resistance in proportion to the current flowing through the resistance, a cutout switch that is located in series within the circuit, and means for opening the cutout switch when the measured voltage is too high. The improvement is a single circuit element which functions as the current sensing resistance and as the cutout switch, the single circuit element having first and second electrodes and a control electrode that turns the first and second electrodes "on" and "off" and wherein the current sensing resistance is an on-resistance between the first and second electrodes.
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Conexant Systems Inc.
Gaffin Jeffery
Zura Peter
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