Industrial Technology Research Institute (ITRI) has developed two generations of electric scooters (ES) by implementing valve-regulated-lead-acid (VRLA) and nickelmetal-hydride (Ni-MH) batteries respectively . The engineering targets of the 3rd generation ES are to improve the current production ES performance in terms of 25% of weight, 50% of cruise range, 20% of total energy efficiency, 300% of the longer battery life, and at no price hike after the government subsidy. This article will describe the key technical aspects of the development of this 3rd generation ES. It will include the re-design of vehicle structure by implementation the new aluminum-casting frame to replace the steel-welding frame. The Li-Ion battery has selected and equipped with the battery management system to optimize and protect the battery cells. The vehicle performance is upgraded by optimizing the phase angle and flux-weaken of the motor and controller to increase the torque at both low-speed and high-speed regions. A single-stage timing belt transmission is a new design to replace the two-stage gear transmission. The centralized vehicle energy management system is developed to monitor and control the inputs and outputs of the battery energy to increase the total efficiency of the vehicle. Finally, the system bench-test and the vehicle dynamometer-test are planned to validate all engineering targets.
The development of the 3rd generation electric scooter in Taiwan
Die Entwicklung der dritten Generation von Elektrofahrzeugen in Taiwan
2000
13 Seiten, 10 Bilder, 5 Tabellen, 11 Quellen
Conference paper
Storage medium
English