Patent ID: 6868318
Filing Date: 2005-03-15
Classification: B60L,B60W,Y02T

Abstract:
1. A method of implementing a wide limit mode (WLM) of operation in a vehicle comprising an energy storage system having a rechargeable battery, the battery having a plurality of monitored battery parameters, a discharge power limit and a closed-loop controller, the controller having a timer and a counter that are adapted to count time intervals associated with the implementation of the WLM by incrementing a count when the WLM is active and decrementing the count or maintaining a zero count when the WLM is not active, comprising the steps of: (1) determining whether the WLM is active; (2) setting a WLM discharge power limit when the WLM is active that is greater than the discharge power limit; and (3) establishing a duty cycle for the WLM using the timer and counter, wherein the duty cycle comprises a maximum time interval during which the WLM discharge power is available for use by the vehicle and a minimum time interval during which the WLM discharge power is not available for use by the vehicle.