Liquid hydrogen filling will become an important path of hydrogen energy utilization,and the direct filling technology of liquid hydrogen will show an important role in liquid hydrogen utilization,including liquid hydrogen transfer,discrete filling and automotive fuel.Partial equipments have not been built a complete supply chain,such as liquid hydrogen bottles,liquid hydrogen dispenser,liquid hydrogen pumps and instruments.There are still some defects and key technical issues still need to be solved.This paper summarizes the development situation and existing problems of the existing key equipment,and puts forward the prospect of key equipment.
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