Experimental investigation on the strategy of electric vehicle cabin heating in winter
Cabin heating in winter consumes a lot of energy for electric vehicles,which further aggravates the attenuation of electric vehicles'driving range in winter.In this pa-per,an electric vehicle cabin thermal management system is designed and built,which can carry out the function of both PTC heating and heat pump heating.The effects of different heating methods and control strategies on cabin heating during cold start in winter were tested at-7 ℃ environment through wind tunnel test.The vehicle test results show that a smaller HVAC module air flow rate can significantly improve heat pump heating effi-ciency,but it is more suitable to use a larger air flow rate for PTC heating.The use of partial recirculated air can significantly improve both heat pump heating and electric heat-ing efficiency.In case of employing a small HVAC module air flow rate or recirculated air,heat pump heating presents a significant energy saving effect compared to PTC heating,whereas in case of large HVAC module air flow rate and at full outside air mode,electric heating could be more efficient.
electric vehiclewintercabin warmingheat pumpPTC heating
万方数据
维普
