Cooling system for ultra-fast battery charging for hybrid or electric thrusters

Recharging batteries requires the process to remain always under strictly controlled temperaturas. The system reaches -125ºC at the outlet of the turbine it is fitted on. To count with enough termal drop in order to be always ready to initiate the battery fast charging process. The system uses ambient air as the working fluid to cool a liquid coolant circulating through a refrigeration circuit for the vehicle's batteries and electronic components and / or a supercharger. It uses a semi-closed inverse Brayton cycle with the stages of: compression, expansion, cooling and regeneration. The system enables recharging times for batteries in electric or hybrid propulsion systems to be shortened, without penalizing their useful life. Compression and expansion stages are carried out through turbomachines that provide high power and low thermal and mechanical inertia. The cooling and regeneration stages employ heat exchangers (plate, shell and tube, or cross-flow). Compression is carried out in stages, including for internal cooling a closed ejector cycle with refrigerants like ammonia or carbon dioxide. At the entrance to the first semi-closed stage, a filter drier can be provided to reduce humidity in the air. The system can include, between the coolers, an ejection cycle (for improved efficiency) using a refrigerant fluid with low global warming potential, a condenser for the refrigerant gas-liquid phase change and a flow divider designed to split the air stream towards a pump (primary flow) and a lamination valve (secondary flow) respectively. After the compressors and coolers, the air passes through a regenerator (heat exchanger), which lowers its temperature, and reaches the turbine where its temperature and pressure are reduced. Through a heat exchanger it comes into thermal contact with the vehicle and / or supercharger coolant.