Energy-saving type on-site hydrogen production and refueling station system

The invention discloses an energy-saving on-site hydrogen production and hydrogenation station system, which belongs to the field of hydrogen energy utilization, and is characterized in that by combining ammonia decomposition on-site hydrogen production with a hydrogen refueling station and optimizing system configuration, energy conservation and consumption reduction in a hydrogen production and hydrogenation process are realized, so that the storage and transportation cost of hydrogen is reduced. Wherein the high-pressure hydrogen cooling device is combined with the filling device, hydrogen is cooled after throttling of the filling device, the temperature requirement of a cold source is lowered, and therefore the refrigeration cycle COP is improved to save power consumption; cold energy required by the cooling device comes from ammonia refrigeration circulation, flexible adjustment of the refrigeration quantity can be achieved, and the system energy efficiency is improved by combining double-effect absorpti