Patent ID: 7735331
Filing Date: 2010-06-15
Classification: B60H,B60L,Y02T

Abstract:
1. A method for controlling temperature of a battery of a vehicle via a movable device, the vehicle having an operator cabin, the method comprising: determining a representative temperature of the battery; determining a cabin temperature corresponding to the operator cabin; determining maximum and minimum temperatures corresponding to the battery; determining a speed of the vehicle and an operating mode of an engine corresponding to the vehicle; calculating a temperature delta corresponding to the difference between the maximum and minimum temperatures; activating the movable device while the temperature delta is greater than a first predetermined delta threshold value; maintaining a present state of the movable device while the temperature delta is less than a second predetermined delta threshold value, wherein the second predetermined delta threshold value is less than the first predetermined delta threshold value; and performing the following steps while the temperature delta is less than the first predetermined delta threshold value and greater than the second predetermined delta threshold value: generating a control signal based at least in part on a base signal, which is function of the vehicle speed and the representative temperature, and the cabin factor, which is a function of the cabin temperature and a target cabin temperature; controlling a variable rate of movement of the movable device, when the movable device is activated; outputting the control signal to the movable device; and modifying the variable rate of movement of the movable device in response to the control signal.