Based on the work of air conditioners for new powerful cars, the author created a heat pump air conditioner with various functions, such as cooling and heating passengers, cooling and preheating the battery, defogging, defrosting, and PTC heating. Developed basic components of AC heat pumps such as scroll compressor model, running condenser model, combined evaporator model, plate evaporator extended valve model, and radial basis function neural network model for predicting compressor volumetric efficiency and isentropic efficiency. The accuracy of the gas-flow, gas-flow, and plate evaporator simulation model was verified. The maximum error between the experimental and simulated values of compressor power, heat exchanger, and system COP in various operating models is 0.34~10.09, which is consistent with the experimental results. correct and can be used for ventilation pump research. Also, an operational simulation analysis platform was used to analyze the performance of the heat pump and study the system characteristics. It is clear that this system provides more warmth to the occupants in the defrost mode, and current research on the operation of the air conditioning pump is based on the first law of thermodynamics.