Hose Developments: Performance Requirements & Tech Advances in the Electrification Era

With the accelerated adoption of electrification, hose technical requirements are undergoing significant changes.

The material system for modern automotive hoses has evolved from traditional rubber materials to multi-material composites. Currently, the mainstream materials used include:

● EPDM (ethylene propylene diene monomer): Excellent heat resistance and aging resistance

● Silicone rubber: Maintains excellent elasticity even in high-temperature environments

● Fluororubber: Excellent oil and chemical resistance

● Thermoplastic elastomers: Advantages in recyclability and processability

The increasing popularity of electric vehicles is placing new demands on hose performance:

● Battery cooling systems require hoses to withstand long-term use with coolant of specific chemical compositions, extending their operating temperature range to -40°C to 150°C

● The heat generated by electric drive systems increases cabin temperatures, requiring hoses to exhibit improved high-temperature resistance

● High-voltage system applications require hoses to provide reliable insulation protection

● Lightweighting demands drive thin-wall designs while maintaining excellent durability

Current development directions in hose technology include: multi-layer composite structural design to balance pressure resistance, flexibility, and durability; the application of new barrier materials to reduce media permeability; the development of environmentally friendly materials to meet sustainability requirements; and the improvement of intelligent manufacturing processes to ensure product consistency and quality stability.

With the widespread application of 800V high-voltage platforms and more efficient thermal management systems, the next generation of automotive hoses will develop towards higher performance, lighter weight, and more environmentally friendly features. Innovations in new materials and processes will continue to drive technological advancement in the industry.

As an indispensable component of automotive fluid systems, automotive hoses' technological development is directly related to the performance and reliability of the entire vehicle. With continuous technological advancement, hose products will play an even more important role in the transition to electric vehicles.