System and method for controlling temperature of fuel cell stack
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United States of America Patent
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Jan 9, 2018
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N/A
app pub date -
Mar 5, 2015
filing date -
Nov 5, 2014
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Abstract
A system and method for controlling a temperature of a fuel cell stack are provided. The method includes performing a pump OFF mode which turns off the cooling water pump or operates the cooling water pump while reducing the rotation speed of the cooling water pump to be less than the reference rotation speed, when a cooling water outlet temperature is equal to or less than a preset first temperature while a pump normal mode which adjusts a rotation speed of a cooling water pump to be equal to or greater than a preset reference rotation speed and varies rpm based on the cooling water outlet temperature is performed. In addition, the pump normal mode is performed when a cooling water outlet temperature estimation value of the fuel cell stack exceeds a preset second temperature while the pump OFF mode is performed.
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