High-density complex storage system of hydrogen/ natural gas dual fuel and control method thereof

Abstract

A vehicle-used high-density complex storage system of hydrogen / natural gas dual fuel comprises a vehicle control module, a storage tank with a double-layer structure, and a controller, as well as a natural gas supply pipeline valve module and a hydrogen supply pipeline valve module both connected with the controller, wherein the storage tank with the double-layer structure comprises an outer storage tank, an inner storage tank arranged inside the outer storage tank, and an interlayer; the outer tank is connected with the natural gas supply pipeline valve module to realize refueling, storing and supplying liquefied natural gas; the inner storage tank is filled with a nanopore material; the inner storage tank is connected with the hydrogen supply pipeline valve module to realize refueling, storing and supplying hydrogen fuel; the inner storage tank adopts the cold energy of the liquefied natural gas to provide a low-temperature environment for the storage of hydrogen; through the combination with the nanopore material hydrogen storage material, the hydrogen storage density of the inner storage tank is greatly increased; gasified natural gas of the outer storage tank can serve as a fuel to enter an internal combustion engine, and the dual fuel complex storage system can realize the gradient utilization of the stored energy of the gas fuel, so that the efficiency of energy utilization is greatly increased.

Description

Technical field [0001] The invention relates to a fuel storage system for a hybrid vehicle, in particular to a dual-fuel storage system that stores liquefied natural gas and uses high specific surface area nanoporous materials to adsorb hydrogen. Background technique [0002] At present, the lack of suitable high-density on-board hydrogen storage technology is one of the main bottlenecks in the commercial development of fuel cell vehicles. The current hydrogen storage technologies are mainly divided into high-pressure hydrogen storage, liquid hydrogen storage, and solid material hydrogen storage. Among them, high-pressure hydrogen storage is currently a vehicle-mounted storage technology commonly used in countries around the world, but this method has a low hydrogen storage density. If you want to make fuel cell vehicles based on this storage technology have a driving range similar to that of internal combustion engine vehicles, storage is usually required The pressure must reac...

AI Technical Summary

Problems solved by technology

Among them, high-pressure hydrogen storage is currently a vehicle-mounted storage technology commonly used in countries all over the world, but the hydrogen storage density of this method is low. To make fuel cell vehicles based on this storage technology have a driving range similar to that of internal combustion engine vehicles, it usually requires storage The pressure must reach more than 700bar, which poses great challenges to manufacturing technology, manufacturing cost, safety, and corresponding hydrogen filling infrastructure; liquid hydrogen storage conditions are extremely harsh, not only requiring a large amount of electricity to be used to produce liquefied hydrogen, but also It also puts forward extremely strict technical requirements for thermal insulation, so it is not currently the main technical direction for vehicle-mounted hydrogen storage; hydrogen storage methods based on solid materials are considered to be the main direction that may solve future vehicle-mounted hydrogen storage. Scientists from all over the world A lot of fruitful work has been carried out in this field

However, due to the harsh working conditions of on-board hydrogen storage, so far there is no material that can fully meet the requirements for on-board use.

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