Patent ID: 7741816
Filing Date: 2010-06-22
Classification: B60L,H01M,Y02E,Y02T

Abstract:
1. A system, comprising: an electric motor coupled to propel an electrical vehicle; a battery coupled to power the motor; a temperature control system coupled to control temperature of the battery; a battery temperature comparator to compare a temperature of the battery to a specified target storage temperature and to a specified target preheated temperature that is higher than the specified target storage temperature, and to provide a battery below storage temperature signal when the battery temperature is below the specified target storage temperature, and to provide a battery below preheated temperature signal when the battery temperature is below the specified target preheated temperature; a control circuit to determine a time remaining prior to a scheduled drive start time and to provide a preheating enable signal during a target time interval prior to the scheduled drive start time; and a further control circuit to operate the temperature control system to control the temperature of the battery in response to the battery below storage temperature signal to maintain the battery temperature at the specified target storage temperature, and alternately to preheat the battery in response to the battery below preheated temperature signal and the preheating enable signal.