Battery state monitoring circuit and battery device

Details Battery state monitoring circuit and battery device Battery state monitoring circuit and battery device

2005-09-06

2005-09-06

Tso, Edward H. (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

C320S136000

Reexamination Certificate

active

06940256

ABSTRACT:
To realize a battery state monitoring circuit in which detection is reliably made even if a continuous noise is entered, and to provide a battery device which has a long life and is safe. In the battery state monitoring circuit, the detecting circuit outputs a signal for controlling a switch circuit in accordance with a state of the secondary battery with respect to one of a specified voltage value and a specified current value. The signal includes one of: a detection signal for starting one of charge protection and discharge protection of the secondary battery; and a release signal for releasing the one of the charge protection and the discharge protection of the secondary battery. A switching rate from the release signal to the detection signal is higher than a switching rate from the detection signal to the release signal.

REFERENCES:
patent: 5493197 (1996-02-01), Eguchi et al.
patent: 6492791 (2002-12-01), Saeki et al.
patent: 6642694 (2003-11-01), Yamanaka et al.
patent: 6885168 (2005-04-01), Okumura et al.

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