Electricity: battery or capacitor charging or discharging – Battery or cell discharging – Regulated discharging
Reexamination Certificate
2005-11-29
2009-12-29
Tso, Edward (Department: 2858)
Electricity: battery or capacitor charging or discharging
Battery or cell discharging
Regulated discharging
C320S134000, C320S162000, C361S088000, C361S093100
Reexamination Certificate
active
07638977
ABSTRACT:
A protective circuit of a battery pack and a method of operating the protective circuit prevents the battery cells from being overcharged by directly detecting overcharge or detecting disconnection of sensing wires, which sense the voltage of battery cells, and instantly shuts off the high current being applied to the battery cells when the sensing wires are disconnected. The protective circuit includes at least one battery cell, and a cell voltage detecting unit adapted to detect the voltage of the battery cell. The protective circuit also includes a switch unit, and a control unit adapted to receive a signal from the cell voltage detecting unit and generate a predetermined control signal based on the signal of the cell voltage detecting unit in order to turn off the switch unit when the battery cell is overcharged or the sensing wire is disconnected.
REFERENCES:
patent: 4442706 (1984-04-01), Kawate et al.
patent: 4844038 (1989-07-01), Yamato et al.
patent: 5001465 (1991-03-01), Siegel
patent: 5642030 (1997-06-01), Seelye
patent: 5773962 (1998-06-01), Nor
patent: 5811959 (1998-09-01), Kejha
patent: 6049140 (2000-04-01), Alksnat et al.
patent: 6075344 (2000-06-01), Kawai
patent: 6172482 (2001-01-01), Eguchi
patent: 6396246 (2002-05-01), Haraguchi et al.
patent: 6424158 (2002-07-01), Klang
patent: 6577883 (2003-06-01), Ueda
patent: 6687103 (2004-02-01), Pannwitz
patent: 6873135 (2005-03-01), Nakatsuji
patent: 6879132 (2005-04-01), Oki et al.
patent: 2002/0043959 (2002-04-01), Tanaka et al.
patent: 2002/0195996 (2002-12-01), Nakatsuji
patent: 2003/0044689 (2003-03-01), Miyazaki et al.
patent: 2003/0102845 (2003-06-01), Aker et al.
patent: 2003/0132732 (2003-07-01), Thomas et al.
patent: 2004/0217737 (2004-11-01), Popescu
patent: 2004/0257038 (2004-12-01), Johnson et al.
patent: 2005/0242779 (2005-11-01), Yoshio
patent: 2006/0017581 (2006-01-01), Schwendinger et al.
patent: 2000-340267 (2000-12-01), None
patent: 2001-116776 (2001-04-01), None
Patent Abstracts of Japan for Publication No. 2001-116776; Date of publication of application Apr. 27, 2001, in the name of Osawa Naoki et al.
Patent Abstracts of Japan for Publication No. 2000-340267; Date of publication of application Dec. 8, 2000, in the name of Tamai Mikitaka et al.
Christie Parker & Hale LLP
Samsung SDI & Co., Ltd.
Tso Edward
Williams Arun
LandOfFree
Battery pack protective circuit for detecting overcharge or... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Battery pack protective circuit for detecting overcharge or..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Battery pack protective circuit for detecting overcharge or... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4148240