Battery pack and electric tool

Details Battery pack and electric tool Battery pack and electric tool

2011-05-24

2011-05-24

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Cell or battery charger structure

For battery pack

C320S115000

Reexamination Certificate

active

07948210

ABSTRACT:
A battery pack includes a plurality of lithium battery cells, an analog thermo sensing member, and an analog switch. The analog thermo sensing member detects, in an analog form, a battery temperature of at least one of the plurality of lithium battery cells, and outputs an output preventing signal if the battery temperature is over a first predetermined temperature. The analog switch element is the plurality of lithium battery cells in series, and is switched, based on the output preventing signal, to a state in which a current is prevented from flowing in the plurality of lithium battery cells.

REFERENCES:
patent: 06-141479 (1994-05-01), None
patent: 2003-174720 (2003-06-01), None
patent: 2006-121827 (2006-05-01), None

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