Patent ID: 8245768
Filing Date: 2012-08-21
Classification: B60H

Abstract:
1. An air-conditioning system of an electric car comprising: a battery in the car; a setting unit configured to selectively set a target temperature by an operator, among a plurality of target temperatures; an air-conditioning unit configured to perform heating and cooling operations for a passenger compartment in the car by electrical power supplied from the battery, based on the set target temperature to adjust a temperature of the passenger compartment to the target temperature; a vehicle speed detecting unit that detects a vehicle speed of the car; a control unit which comprises a first group of setting temperatures corresponding to the plurality of target temperatures, and a second group of setting temperatures corresponding to the plurality of target temperatures, the control unit being configured to select the first group when the detected vehicle speed is equal to or higher than a first predetermined value, and to select the second group when the detected vehicle speed is equal to or lower than a second predetermined value lower than the first predetermined value, to allow the air-conditioning unit to perform the heating operation based on the selected group, wherein at least one of the setting temperatures in the first group that corresponds to one of the target temperatures is different from at least one of the setting temperatures in the second group that corresponds to said one of the target temperatures, such that said at least one of the setting temperatures in the second group is lower than said at least one of the setting temperatures in the first group.