Battery pack

Details Battery pack Battery pack

2007-10-23

2010-11-09

Assouad, Patrick J (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

C320S106000, C320S112000

Reexamination Certificate

active

07830121

ABSTRACT:
A battery pack having a secondary battery; a measurement unit measuring a terminal voltage and a current of the secondary battery; a protection unit preventing the secondary battery from being overcharged when the terminal voltage measured by the measurement unit is equal to or higher than an overcharge detection voltage; and a control unit receiving the terminal voltage and current measured by the measurement unit, the control unit having a first mode and a second mode in which current is less consumed than the first mode. A voltage in a range of from a full charge voltage to less than the overcharge detection voltage is defined as a voltage threshold. The control unit changes from the first mode to the second mode when a state in which a transition requirement is satisfied lasts for a predetermined period of time.

REFERENCES:
patent: 6208117 (2001-03-01), Hibi
patent: 7215096 (2007-05-01), Miura et al.
patent: 2003/0141847 (2003-07-01), Fujiwara
patent: 2003-125540 (2003-04-01), None

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