Electricity: battery or capacitor charging or discharging – Battery or cell charging – With thermal condition detection
Reexamination Certificate
2011-05-31
2011-05-31
Tso, Edward (Department: 2858)
Electricity: battery or capacitor charging or discharging
Battery or cell charging
With thermal condition detection
C320S151000, C320S144000, C320S153000, C320S154000
Reexamination Certificate
active
07952330
ABSTRACT:
A protection circuit is provided for protecting a secondary battery from overcharging and excessive discharge current by a simple circuit. The protection circuit is provided with a connection terminal (T3) for connecting the secondary battery (6); a connection terminal (T1) for connecting a charging device for charging the secondary battery (6) and/or a load device driven by a discharge current from the secondary battery (6); a bimetal switch (SW1) that is provided between the connection terminals (T1, T3) and turned off in the case of exceeding a specified temperature set beforehand; a heater (R2) for heating the bimetal switch (SW1); and an integrated circuit (IC1) for turning the bimetal switch (SW1) off by causing the heater (R2) to generate heat if a voltage applied to the connection terminal (T3) by the secondary battery (6) exceeds a preset reference voltage.
REFERENCES:
patent: 6222346 (2001-04-01), Mori
patent: 6577105 (2003-06-01), Iwaizono
patent: 7163757 (2007-01-01), Iwasaki et al.
patent: 2002/0140401 (2002-10-01), Watanabe et al.
patent: 63-174145 (1988-11-01), None
patent: 02-139820 (1990-05-01), None
patent: 4-75430 (1992-03-01), None
patent: 05-282977 (1993-10-01), None
patent: 11-262270 (1999-09-01), None
patent: 2002-204525 (2002-07-01), None
patent: 2003-007286 (2003-01-01), None
patent: 2003-070153 (2003-03-01), None
patent: 2003-111269 (2003-04-01), None
patent: 2003-115246 (2003-04-01), None
patent: 2004-206894 (2004-07-01), None
patent: 2004-220944 (2004-08-01), None
patent: 2006-304487 (2006-11-01), None
Japanese Notice of Reasons for Rejection, w/ English translation thereof, issue in Japanese Patent Application No. JP 2005-159889 dated Feb. 23, 2010.
Japanese Notice of Reasons for Rejection, w/ English translation thereof, issued in Japanese Patent Application No. JP 2005-159889 dated Nov. 24, 2010.
Japanese Notice of Reasons for Rejection, w/ English translation thereof, Issued in Japanese Patent Application No. JP 2005-181125 dated Feb. 8, 2011.
Japanese Notice of Reasons for Rejection, w/ English translation thereof, Issued in Japanese Patent Application No. JP 2005-122765 dated Feb. 15, 2011.
Berhanu Samuel
McDermott Will & Emery LLP
Panasonic Corporation
Tso Edward
LandOfFree
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