This technology provides a method for designing the structure and specification of the electric vehicle heat pump system depends on the vehicle specification and air-conditioning (AC) system performance requirement. An energy-saving thermostat controller is developed which will calculate the required system performance and tune the working conditions of the compressor and blower depends on the difference between the calculated and the actual performance of the system. Therefore, the heat pump system could provide a proper thermostat performance with reducing the overall power consumption

1.A system design technology which is able to apply to the sedans or the buses.

2.A thermostat controller which works based on the thermo-load estimator and the temperature accuracy could be limited within ±2℃

Automotive heat pump AC system, energy-saving thermostat control algorithm

The developed energy-saving thermostat control strategy could provide high output performance-power consumption ratio based on characteristics of the key component of the system. The strategy then could decrease the overall power consumption and help extending vehicle mileage