Battery pack and method for permanently disabling functions...

Details Battery pack and method for permanently disabling functions... Battery pack and method for permanently disabling functions...

2007-01-18

2009-10-06

Ullah, Akm E (Department: 2838)

Electricity: battery or capacitor charging or discharging

Means to identify cell or battery type

C320S134000

Reexamination Certificate

active

07598701

ABSTRACT:
A battery pack and method are disclosed that permanently disable the battery pack on portable electronic equipment if the battery pack has been inauthentically remanufactured. An output voltage value and a discharge current value of the battery block are measured regularly and an amount of change in the output voltage value per unit time is calculated. If the amount of change in the output voltage value per unit time or the discharge current value exceeds predetermined values, operation of an electric circuit involved in charge/discharge operations of the battery pack is permanently disabled.

REFERENCES:
patent: 6404164 (2002-06-01), Bean et al.
patent: 2005/0001629 (2005-01-01), Chen
patent: 2005/0248309 (2005-11-01), Denning
patent: 2006/0028168 (2006-02-01), Nishida
patent: 2006/0108982 (2006-05-01), Daou et al.
patent: 2006/0119316 (2006-06-01), Sasaki et al.
patent: 08-337032 (1996-12-01), None
patent: 2000-013831 (2000-01-01), None
patent: 2003-173220 (2003-06-01), None

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