Patent ID: 9713961
Date: 2017-07-25
CPC Classifications: B60L,Y02T

Claim:
1. A method comprising: determining a condition of a vehicle to be one of an energized condition and a non-energized condition; wherein the vehicle comprises a controller in communication with a rechargeable energy storage system (RESS); wherein the RESS includes a rechargeable energy source electrically connected to at least one contactor; wherein the at least one contactor is in electrical communication with the controller and is selectively actuable between an open state and a closed state by a dynamic actuating current provided by the controller; wherein: wherein in the open state electrical power is prevented from flowing through the at least one contactor, and in the closed state electrical power is flowable through the at least one contactor; the method further comprising: polling, via the controller, a parameter value of at least one parameter; wherein a change in the parameter value of the at least one parameter affects holding and opening forces exerted on the at least one contactor; determining a feed forward factor for a predetermined feed forward window, wherein the feed forward factor is defined by the at least one parameter; determining whether an adjustment to the present level of the dynamic actuating current is indicated by the feed forward factor; and adjusting the dynamic actuating current from the present level to an indicated level when an adjustment to the dynamic actuating current is indicated; wherein the indicated level of the dynamic actuating current is sufficient to maintain the at least one contactor in the closed state during the feed forward window.