Climate control system for electric vehicle
AssigneeFord Motor Company
InventorsGary A. Dage, Brian R. Kelm, Andrew J. Klapp
Life of this patent
Estimating the term…
Abstract
A climate control system for an electric vehicle includes a programmed microcomputer for controlling the pre-conditioning of the vehicle prior to usage as well as heating, ventilating and air conditioning of the vehicle under normal operating conditions. The microcomputer responds to a plurality of vehicle operator inputs and sensor inputs and provides outputs to control the speed of the compressor, condenser fan and blower fan, and the position of a temperature blend door and a Fresh Air/Recirculating Air door to optimize the use of electrical energy.
Claims18
A climate control system for a vehicle comprising a closed refrigerant system including variable speed compressor means, said control system further comprising vehicle operator input means for selecting a desired interior temperature, ambient air sensor means for monitoring the temperature of the ambient air, in-vehicle sensor means for monitoring the temperature of the interior of the vehicle, programmable computer means programmed to determine a set temperature value related to said desired temperature but limited to a value between a fixed predetermined minimum temperature value and a variable maximum temperature value equal to the temperature of the ambient air, said computer means being further programmed to determined an air conditioning value related to the difference between said set temperature value and the temperature of the interior of the vehicle as provided by said in-vehicle sensor means and for controlling the speed of said compressor means as a function of said air conditioning value.
A climate control system for a vehicle comprising heater means, blend means for controlling the mix of air heated by said heater means with cooler air, said blend means including a blend door and blend door actuator, said system further including vehicle operator input means for selecting a desired interior temperature, ambient air sensor means for monitoring the temperature of the ambient air, in-vehicle sensor means for monitoring the temperature of the interior of the vehicle, programmable computer means programmed to determine a set temperature value related to the desired temperature selected but limited to a value corresponding to a temperature between a fixed predetermined maximum temperature and a variable minimum temperature values equal to the temperature of the ambient air, said computer means being further programmed to determined a heating value related to the difference between said set temperature value and the temperature of the interior of the vehicle as provided by said in-vehicle sensor means,, said computer means being programmed to turn said heater means on at a first predetermined heating value and for controlling said blend door actuator to adjust the position of said blend door as a function of said heating value.
A climate control system for a vehicle comprising a closed refrigerant system including variable speed compressor means,
- said vehicle powered by traction battery means and including means for charging said traction battery means from an external alternating current supply,
- said vehicle further including ignition switch means, operator input means including switch means for selecting a pre-condition mode of operation, ambient air sensor means for monitoring the temperature of the ambient air, in-vehicle sensor means for monitoring the temperature of the interior of the vehicle,
- programmable computer means programmed to determined an air conditioning value related to the difference between a predetermined desired in-vehicle temperature and the temperature of the interior of the vehicle if;
- (a) the temperature of the interior of said vehicle exceeds a second higher predetermined temperature and,
- (b) the ignition switch means is OFF and,
- (c) the pre-condition mode has been selected and,
- (d) said traction battery means are fully charged,
- said computer means further programmed to control the speed of said compressor means over a predetermined interval of time as a function of said air conditioning value.
Dependencies are inferred from the claim text.