Application of hydrogen fuel cell hose in the automotive industry: Special emphasis on the key role in the safety of fuel cell vehicles

With the maturity of hydrogen fuel cell technology and the growth of market demand, hydrogen fuel cell vehicles are gradually becoming an important part of clean energy vehicles. In this transformation process, Hydrogen Fuel Cell System Hose, as one of the key components, plays a vital role in the safety and reliability of fuel cell vehicles.

Hydrogen fuel cell vehicles rely on the chemical reaction of hydrogen and oxygen in the air to generate electricity, and hydrogen fuel cell hoses play an important role in transporting hydrogen from storage tanks to fuel cell stacks. Since hydrogen storage usually requires a high-pressure environment, the design and materials of the hose must be able to cope with various working conditions to ensure safe transmission of hydrogen, avoid leakage, and maintain high efficiency under different climatic conditions.

The hydrogen storage system of hydrogen fuel cell vehicles is generally in a high-pressure environment of 700 bar, and the hydrogen fuel cell hose must be able to withstand this high pressure and ensure that hydrogen is transmitted from the gas tank to the fuel cell stack under safe conditions. To this end, modern hydrogen fuel cell hoses use high-strength composite materials, such as metal-coated hoses or polymer composites, which not only improve the strength of the hose, but also effectively prevent the risk of high-pressure hydrogen leakage.

Temperature changes in the operating environment of fuel cell vehicles are a challenge that cannot be ignored. Hydrogen fuel cell hoses must be resistant to both high and low temperatures to ensure that they can maintain stable hydrogen transmission under various weather conditions. Many hoses use high-temperature resistant polymers and low-temperature elastic materials, which greatly enhance the performance of the hoses and enable them to maintain reliability under variable temperature conditions.

During long-term use, hydrogen fuel cell hoses need to deal with the erosion of multiple external factors such as ultraviolet rays, moisture, and acidic environments, so they must have the ability to resist aging and corrosion. To this end, modern hoses have significantly extended their service life by adding UV protection coatings and antioxidant materials, and effectively prevented the hoses from degrading due to external environmental influences.

As a high-energy-density and highly flammable gas, any slight mistake in its storage and transportation may bring huge safety hazards. Therefore, the safety of hydrogen fuel cell hoses in fuel cell vehicles is crucial. The design of hydrogen fuel cell hoses must not only ensure the efficient transmission of hydrogen, but also focus on safety to prevent gas leakage, explosion or other potential risks.

The hydrogen storage system in hydrogen fuel cell vehicles is under high pressure, so the hydrogen fuel cell hoses must have extremely high sealing properties when connecting the hydrogen storage tank and the fuel cell stack. Any tiny leak may cause a safety accident, or even a fire or explosion. Therefore, the design of the hose must adopt double-layer sealing technology and be equipped with a high-precision pressure regulating device to ensure that hydrogen will not leak due to poor sealing during transmission. The use of metal-coated hoses or composite hoses can effectively prevent hydrogen leakage.

With the development of technology, the design of hydrogen fuel cell hoses has gradually incorporated intelligent sensor technology, which can monitor important indicators such as hydrogen pressure, temperature and flow in real time. In the event of an abnormality, the sensor can promptly issue an alarm to the vehicle control system, so that countermeasures can be taken in advance to avoid danger. Such intelligent monitoring technology will greatly improve the safety of fuel cell vehicles. With the continuous innovation of hydrogen fuel cell technology, the design and manufacturing technology of hydrogen fuel cell hoses are also constantly developing to ensure that they play a greater role in efficient and safe hydrogen transmission.