Deterioration determination device for vehicle-driving battery
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United States of America Patent
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Feb 27, 2018
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app pub date -
Dec 24, 2014
filing date -
Dec 26, 2013
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Abstract
A deterioration determination device for a vehicle-driving battery mounted in a vehicle includes a current detection unit that detects a current value of the battery, a voltage detection unit that detects a voltage value of the battery, and a calculation unit that calculates at predetermined time intervals a resistance value of the battery based on current values detected by the current detection unit and voltage values detected by the voltage detection unit during running of the vehicle, calculates a calculation accuracy of the calculated resistance value, and determines deterioration state of the battery based on the resistance value when the calculation accuracy is higher than a preset calculation accuracy.
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