Electrostatic enhanced lithium battery circuit

Details Electrostatic enhanced lithium battery circuit Electrostatic enhanced lithium battery circuit

1998-02-26

1999-06-01

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

Regulated discharging

H01M 1046

Patent

active

059091045

ABSTRACT:
A lithium battery pack (100) comprises a battery cell (102) and a safety circuit (104). The safety circuit prevents overcharge and overdischarge of the battery cell. The safety circuit comprises a battery control IC (106) which senses the battery voltage, and operates a switch circuit (114) to open if an overvoltage or undervoltage condition is sensed. In a conventional battery pack, the safety circuit will trip, opening the switch circuit, upon the application of a 15kV ESD pulse to one of the battery contacts (126 or 128). The invention solves this problem by the use of a first resistor (108) and a second resistor (110) coupled between the battery control IC and the first resistor, in conjunction with a capacitor (112).

REFERENCES:
patent: 5568039 (1996-10-01), Fernandez
Seiko Instrument Data Sheet CMOS LSI Data Book, no date.

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