Efficient hydrogen filling method and system

Abstract

The invention discloses an efficient hydrogen filling method and system. The efficient hydrogen filling system comprises a hydrogen supply unit, a hydrogen compression unit, a hydrogen filling unit and at least two sets of hydrogen storage units arranged in a parallel connection manner, the hydrogen supply unit is connected with the hydrogen compression unit, the hydrogen compression unit is connected with the hydrogen storage units through hydrogen storage branches, and the hydrogen storage units are connected with the hydrogen filling unit through hydrogen conveying branches connected with the hydrogen storage units. According to the efficient hydrogen filling method, the efficient hydrogen filling system is used for filing hydrogen to a terminal user. Hydrogen supplementing of compression equipment to the other hydrogen storage units is not affected when a certain hydrogen storage unit supplies hydrogen to the terminal user, the use rate of the compression equipment is improved, inthe running process of a hydrogen filling station, the hydrogen pressure of hydrogen storage bottles of the hydrogen storage units is kept within the higher pressure range all the time, efficient hydrogen filling of the terminal user can be achieved through the higher hydrogen pressure, and meanwhile, the use rates of the hydrogen storage bottles in the hydrogen storage bottle sets are kept relatively consistent.

Description

technical field [0001] The invention relates to the technical field of hydrogen energy, and more specifically, to an efficient hydrogenation method and system. Background technique [0002] As an efficient, clean and sustainable "carbon-free" energy, hydrogen energy has attracted widespread attention from all over the world. The transportation field dominated by hydrogen fuel cell vehicles is one of the important directions of hydrogen energy utilization. At this stage, the bottleneck restricting the development of hydrogen energy utilization in the transportation field is mainly the construction of hydrogen refueling stations, and the lack of hydrogen refueling infrastructure has become the biggest obstacle to the development of my country's hydrogen energy industry. [0003] The source of hydrogen in the hydrogen refueling station is divided into two types: external hydrogen supply and in-station hydrogen production. At present, there are two types of hydrogen filling pre...

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Problems solved by technology

[0012] (2) Since the hydrogen is supplied to the end user 6' through the hydrogenation machine 5' in the order of low, medium and high pressure hydrogen storage bottles, the hydrogen supply pressure increases from low to high, and the hydrogenation speed is slow and the efficiency is low;

[0013] (3) Because the hydrogen filling port and the hydrogen output port of the hydrogen storage bottle group 4' are the same port, when the hydrogen storage bottle group 4' supplies gas to the end user 6' through the hydrogenation machine 5', the compression equipment 3' will Unable to work, the utilization rate of compression equipment 3' is low;

[0014] (4) When the hydrogen pressure of the hydrogen storage bottle group 4' is reduced to the minimum pressure and the compression equipment 3' replenishes the hydrogen gas to the hydrogen storage bottle group 4', it is difficult to supply hydrogen to end users at the same time; at this time, if the compression equipment 3' The hydrogenation machine 5' directly supplies hydrogen to the end user 6', and the hydrogenation speed is slow and the efficiency is low

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