Apparatus for controlling temperature of secondary battery, vehicle battery pack, and computer-readable medium storing program for controlling temperature of secondary battery
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United States of America Patent
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N/A
Issued Date -
Sep 13, 2007
app pub date -
Mar 5, 2007
filing date -
Mar 7, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A battery ECU reduces temperature variations and voltage variations, which would otherwise be caused at the time of heating of a secondary battery. The battery ECU activates a heater, to thus perform heating, when the temperature of the secondary battery is lower than a predetermined lower-limit temperature. The battery ECU calculates temperature variations .DELTA.T or open circuit voltage variations .DELTA.V achieved after heating operation, and compares the variations with a predetermined allowable threshold value. When the temperature variations .DELTA.T or the voltage variations .DELTA.V exceed a predetermined allowable threshold value, the battery ECU stops heating operation of the heater or commands so as to diminish the amount of heat to be generated, thereby attempting to render the temperature uniform.
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