PARAMETER ESTIMATION DEVICE FOR BATTERY
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United States of America Patent
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Oct 26, 2015
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Oct 31, 2014
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Abstract
A parameter estimation device for a battery capable of reducing an error in estimate of an internal resistance caused by a temperature difference is provided. In a parameter estimation device for a battery (1) for sequentially estimating parameters including a resistance in an equivalent circuit model (41) of the battery based on a temperature of the battery and at least one of a voltage of the battery and a current of the battery, as a resistance value of the resistance in the equivalent circuit model of the battery, a resistance value at a predetermined temperature is estimated, and a resistance value at a present temperature is calculated based on the resistance value at the predetermined temperature and the present temperature.
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