Energy-saving and environment-friendly aircraft battery pack adjustable temperature control system and aircraft thereof

The invention provides an energy-saving and environment-friendly aircraft battery pack adjustable temperature control system and an aircraft thereof, and belongs to the technical field of battery temperature control. The battery circulating temperature control system comprises a battery heat exchange system, a hot liquid bin and a duct cooling system which are circularly connected through a pipeline, the cold liquid bin is connected between the duct cooling system and the battery heat exchange system through a pipeline, and the battery heat exchange system is arranged in a battery pack of the aircraft; a pipeline in the battery heat exchange system is attached to the outer wall of a battery in the battery pack; the duct cooling system is arranged in a turbofan engine of the aircraft, and a pipeline in the duct cooling system is attached to the inner wall of a duct of the turbofan engine. Cooling liquid is adopted for heat exchange and cooling of the battery pack, then the cooling liquid is conveyed into the d