Yutong Bus&Coach, the renowned global leader in commercial vehicle manufacturing, is once again redefining the standards of eco-friendly transportation with its latest advancements in electric bus technology. Driven by a relentless pursuit of innovation, the company has unveiled a groundbreaking electric bus system that sets new benchmarks for safety, efficiency, and durability.
Fireproof and Waterproof Innovation
At the forefront of Yutong’s technological breakthroughs is its cutting-edge battery system, which boasts industry-first extreme waterproof and fireproof capabilities. Engineered to withstand the harshest of conditions, these batteries can endure up to 72 hours of water immersion without compromising their reliable performance. Complementing this exceptional water resistance is a robust sandwich fireproof insulation structure and a pioneering nitrogen protection system, effectively isolating oxygen and eliminating the risk of internal fires – even at temperatures up to 1300°C for 2 hours.
Maximizing Energy Density and Efficiency
Yutong’s unwavering commitment to innovation is further exemplified in its efforts to optimize energy density and efficiency. By adopting the latest high-specific energy cells and employing a highly integrated structural design, the company has achieved a remarkable 38% increase in volumetric energy density, allowing for greater space utilization within the vehicle. This breakthrough addresses the common challenges faced by heavy trucks and low-floor large battery capacity buses, ultimately enhancing overall efficiency and driving range.
Durability and Battery Health Safeguards
Recognizing the importance of long-term reliability, Yutong has reinforced the structural integrity of its battery packs and modules, ensuring they can withstand vibrations and impacts that are more than 5 times the strength of the new national vibration standard. Furthermore, the advanced battery management system meticulously monitors the state of charge (SOC), state of health (SOH), and state of power (SOP), effectively managing the battery’s life cycle and extending its lifespan up to 1.5 million kilometers.
Powertrain Integration and Efficiency
Yutong’s electric bus system showcases its prowess in powertrain integration and efficiency optimization. The new generation of power domain controllers, featuring hardware circuit sharing, software function integration, and high-sealing protection, seamlessly integrates the functions of motors, steering, air compressors, power distribution, and more. This deep integration, coupled with the adoption of the latest SiC power devices, has resulted in an industry-leading system efficiency of up to 99.5% and a remarkable 50% reduction in energy consumption.
Conclusion
Complementing its advancements in powertrain technology, Yutong has also introduced a revolutionary approach to chassis layout optimization. The company’s new generation of integrated e-axle employs a parallel-shaft two-stage transmission, replacing the traditional three-stage design. This innovative approach has achieved a weight reduction of more than 49% and a 30% improvement in chassis layout space, while also boosting overall system efficiency to over 93% and braking energy recovery to 77%.
