State estimation method and state estimation apparatus of electric storage element
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United States of America Patent
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Aug 27, 2013
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Aug 16, 2012
app pub date -
Oct 5, 2010
filing date -
Oct 5, 2010
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Abstract
A method includes the steps of calculating the temperature of a reference point in an electric storage element by using a detected temperature by a temperature sensor attached to an outer face of the electric storage element and a heat conduction equation, and estimating the internal state of the electric storage element by using the calculated temperature of the reference point. The reference point is a lattice point at which a temperature associated with the internal resistance of the electric storage element is shown, out of a plurality of lattice points provided in the electric storage element.
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