18 May 2017
When the ordinary heat pump air conditioning system of a pure electric vehicle runs under the condition of ultra low temperature, the discharge temperature by compressor will be too high and the heating capacity of the system will decay seriously. In order to solve this problem, a scroll compressor with vapor injection for pure electric vehicle heat pump air conditioning system was designed, a heat pump compressor has been developed for pure electric vehicles and a test bench has been built. The performance of heating mode at different circumstances temperature was tested and analyzed. The results showed that, compared with the conventional compressor, the compressor with vapor injection was feasible and could meet the temperature requirements of the vehicle cabin.