Plastic liner composite high-pressure hydrogen storage cylinder and manufacturing method thereof

Abstract

The invention discloses a plastic liner composite high-pressure hydrogen storage bottle and a manufacturing method thereof. The plastic liner composite high-pressure hydrogen storage bottle comprises a bottle body and a metal bottle opening assembly, and the bottle body comprises a plastic liner, a winding layer and an outer protection layer which are sequentially connected from inside to outside; the plastic liner comprises a plastic liner inner layer, a plastic liner isolation layer and a plastic liner outer layer which are sequentially bonded from inside to outside; and the metal bottle opening assembly comprises an embedded base and a valve seat, and the embedded base and the plastic liner are fused and bonded into a whole. According to the high-pressure hydrogen storage bottle, the plastic liner adopting multi-layer structural design is arranged, and the hydrogen permeation resistance of the liner is effectively improved; through surface treatment of the embedded base, the bonding capacity between the embedded base and a polymer is improved, and the hidden danger of leakage can be reduced; through use of a spring energy storage sealing ring, the sealing capability and pressure resistance of the hydrogen storage bottle are greatly improved; and in addition, on the premise of guaranteeing high performance, the winding scheme is optimized, carbon fibers with lower cost are adopted, and therefore the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to a high-pressure hydrogen storage cylinder made of carbon fiber fully wound composite material, in particular to a high-pressure hydrogen storage cylinder made of composite material with a plastic liner for storing 70Mpa high-pressure gaseous hydrogen and a manufacturing method thereof. Background technique [0002] Hydrogen energy is a high-efficiency and clean energy, with the advantages of abundant sources, clean and environmentally friendly, and storage and transportation. It is known as the secondary energy with the most development potential in the century, especially in the field of automobiles. The best choice for energy. [0003] On-board hydrogen storage technology is the key to the development of hydrogen fuel cell vehicles, which directly affects the cruising range and cost of hydrogen fuel cell vehicles. Gaseous hydrogen storage technology is mature, widely used, and low-cost, and it is the main method of hydroge...

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Problems solved by technology

[0004] At present, many well-known foreign companies such as Quantum Corporation of the United States, Hexagon Lincoln Corporation, General Motors Corporation, and Toyota Motor Corporation have developed non-metallic liner fiber fully wound high-pressure hydrogen storage cylinders with a design working pressure of 70Mpa and good fatigue life. , corrosion resistance, and small weight-to-capacity ratio; however, the plastic non-metallic liner has poor penetration resistance, unstable quality, and potential leakage hazards in the welding process with the metal valve seat. In addition, the process is relatively complicated and the manufacturing cost is high.

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