Development of Next Generation Fuel-Cell Hybrid System - Consideration of High Voltage System -

Tetsuhiro Ishikawa; Shigeki Hamaguchi; Tatsuhiko Shimizu; Tsuyoshi Yano; Shoichi Sasaki; Kenji Kato; Masao Ando; Hiroshi Yoshida

doi:10.4271/2004-01-1304

2004-03-08

Development of Next Generation Fuel-Cell Hybrid System - Consideration of High Voltage System - 2004-01-1304

Toyota Motor Corporation began leasing a new generation fuel cell vehicle the FCHV (Fuel Cell Hybrid Vehicle) in December 2002. That vehicle includes a new variable voltage power electronics system and uses the Nickel Metal Hydride (Ni-MH) battery system from the Prius hybrid gasoline electric vehicle.

This paper describes on-going efforts to model optimum secondary storage systems for future vehicles. Efficiency modeling is presented for the base Ni-MH storage system, an ultra capacitor system and a Lithium ion (Li-ion) battery system. The Li-ion system in combination with a new high efficiency converter shows a 4% improvement in fuel economy relative to the base system. The ultra capacitor system is not as efficient as the base system.

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Development of Next Generation Fuel-Cell Hybrid System - Consideration of High Voltage System - 2004-01-1304

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