A Modified Heat Pump Air-Conditioning System for Electric Vehicle

Po Hsu Lin; Kuang Ting Cheng

doi:10.4028/www.scientific.net/AMM.145.32

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 145A Modified Heat Pump Air-Conditioning System for...

A Modified Heat Pump Air-Conditioning System for Electric Vehicle

Abstract:

In the present electric or hybrid vehicle, a PTC heater is adopted to provide heating function. In order to overcome the drawback of low efficiency of the PTC heater, a modified heat pump system structure was proposed to recover the waste heat which is generated by the subsystems of the electric vehicle. The recovered heat is transferred by the refrigerant and used to heat up the air that enters the cabin. In this paper, the electric vehicle battery pack is chosen as the target subsystem. A battery cell model was coded on the SC/Tetra platform and corrected according to the experiment data. The simulation results showed that the maximum heat generated by the battery modules (176 cells) under 1.5C discharging is about 356 W which could reduce 20% of the heat absorbed from the environment if a complete battery pack (400 cells) is used.