TY - JOUR
TI - Heat management system of electric vehicle based on heat pump and energy recovery of removable battery
AU - Xue Yuanfei
AU - Diao Xudong
AU - Li Xin
JN - Thermal Science
PY - 2023
VL - 27
IS - 2
SP - 1215
EP - 1221
PT - Article
AB - In order to manage the air-conditioning thermal system, battery thermal  system and motor thermal system in a unified manner, the author proposes a  self-developed integrated thermal management system for electric vehicles  to recover battery energy. Firstly, the problems in the development of  electric vehicles and the importance of thermal management system are  introduced, secondly, the self-developed thermal management system scheme  and the principle of each part are analyzed, the experimental results of  thermal system in enthalpy difference chamber are also introduced. The  experimental results show that: Under the double evaporation system, when  the compressor speed is 4500 rpm, the maximum COP is 2.46, and the maximum  COP charge is 1180 g, the maximum heat transfer capacity is 4819 W (wind  side heat transfer + water side heat transfer), the evaporation temperature  is 5.35°C, the evaporation superheat is 9.5°C, the condensation temperature  is 59.3°C, the undercooling degree is 10.4°C, the suction pressure is 280  kPa, and the exhaust pressure is 1694 kPa. In conclusion, the thermal  management system has great energy saving effect, which ensures that the  electric vehicle range will not be greatly attenuated under winter heating  conditions, and meets the requirements of comfort.