Electricity: battery or capacitor charging or discharging – Battery or cell charging – With thermal condition detection
Reexamination Certificate
2005-11-02
2009-06-23
Tso, Edward (Department: 2838)
Electricity: battery or capacitor charging or discharging
Battery or cell charging
With thermal condition detection
C429S098000
Reexamination Certificate
active
07550949
ABSTRACT:
A process for controlling temperature of a battery pack includes operating a fan to change a battery temperature to an optimal range of temperature (Topt) when a condition is satisfied that the battery temperature is equal to or greater than a maximum acceptable temperature (Tmax) or when the battery temperature is equal to or less than a minimum acceptable temperature (Tmin) and, at the same time, when the difference between a battery temperature (Tbat) and an air temperature (Tair) of air is equal to or greater than a critical temperature (Tcrt), and operating the fan to change the battery temperature to an optimal range of temperature variation (Topt1) of each unit cell when the battery temperature does not satisfy the condition, and a temperature variation (Tvar) of each unit cell is equal to or greater than a predetermined critical temperature (Tcrt1). According to the present invention, the operation of the fan is minimized, and therefore, optimal battery operation is accomplished while unnecessary power consumption is reduced. Furthermore, the temperature deviation between the unit cells is reduced, and therefore, the operation of the overall battery system is optimized.
REFERENCES:
patent: 5982152 (1999-11-01), Watanabe et al.
patent: 2004/0135550 (2004-07-01), Nishihata et al.
patent: 2000012107 (2000-01-01), None
patent: 2000036327 (2000-02-01), None
KR20050007648; Jan. 21, 2005; Hwan; “Tray of Cell Pack for Hybrid Electric Automobiles,Improving Life Span of Cell Pack”; Abstract Only; 1 page.
International Search Report; International Application No. PCT/KR2005/003362; Date of the actual completion of the international search: Feb. 28, 2006; Date of Mailing: Feb. 28, 2006; 2 pages.
Ahn Jaesung
Jung Do Yang
Namgoong John E.
Park Jong-Min
Woo Hyosang
Boateng Alexis
Cantor & Colburn LLP
LG Chem Ltd.
Tso Edward
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