Modularized passenger car air conditioner

The modularized passenger car air conditioner comprises a first module, a second module and a third module, the second module is located between the first module and the third module and comprises an evaporation assembly and a condensation assembly, and the first module comprises a compressor assembly and an electric control assembly. The third module comprises a battery heat management assembly, the compressor assembly, the electric control assembly, the evaporation assembly and the condensation assembly are connected through pipelines to form a main circulation loop of a refrigerant, and the compressor assembly, the electric control assembly, the condensation assembly and the battery heat management assembly are connected through pipelines to form an auxiliary circulation loop of the refrigerant; according to the utility model, the air conditioner is divided into a plurality of modules, and the second modules with different lengths are adopted to adapt to passenger cars with different lengths, so that parts