Patent ID: 7800345
Filing Date: 2010-09-21
Classification: B60L,G01R,H01M,Y02E,Y02T

Abstract:
1. A battery management system that determines an estimated state of charge (SOC) of a battery, the system comprising: a sensor to sense a voltage, a current, and a temperature of the battery; a controller to determine whether the current flows, and to control a reset of an SOC depending on the determination result; an idle period decider to set an open circuit voltage (OCV) idle period associated with the detected temperature of the battery in response to an activation command of the controller; and an SOC reset unit to compare the set OCV idle period with a battery idle time during which the current of the battery does not flow, in response to the activation command of the controller, to set a reset OCV depending on the comparison result, and to selectively reset the estimated SOC as a reset SOC that corresponds to the reset OCV.