Development of Low-cost Bipolar Plates for New Structure Fuel Cell Stack

Kazuo Nunokawa･Kentaro Ishida･Hiroshi Shinkai･Shuhei Goto (Honda R&D)･Satoshi Oyama (Honda Motor)

The bipolar plate in this study have been coated before pressing to achieve cost reduction without compromising durability. The seal structure has been changed from rubber seal structure to metal bead seal structure formed by pressing and weld structure.New fuel cell stack achieved one-third in production costs and twice the durability compared to the conventional fuel cell stack.

Development of UEA with Both Durability and Cost Performance for New Structure Fuel Cell Stack

Takashi Kato･Akira Nakahara･Takuya Ohkura･Masakuni Yamamoto･Satoru Terada･Akihiro Noda (Honda R&D)･Nagayuki Kanaoka (American Honda Motor)

In the UEA of the newly structured fuel cell stack installed in HONDA's CRV-FuelCell, we worked to build a deterioration model for each component and improve its accuracy, and reflected the material specification limit range in operation control. As a result, we have achieved both lower cost and improved durability for MEA for CLARITY FUEL CELL.

Lifetime Assessment of Fuel Cell Output Control on Fuel Cell Hybrid Test Train

Takashi Yoneyama (Railway Technical Research Institute)･Minhao Wen･Yida Bao･Sihai Xu･Wei-Hsiang Yang･Yushi Kamiya (Waseda University)･Kenichi Ogawa･Manato Kaneko (Railway Technical Research Institute)

To assess the impact of fuel cell output control methods on the lifetime of a fuel cell in the fuel cell hybrid test train, we developed a predictive model for the fuel cell output voltage degradation. We utilized the predictive model to evaluate the differences in fuel cell output control methods that affect the lifetime of the fuel cell using a drivng energy simulator.

Development of Model-based Humidity Control using Humidifier Model in Fuel Cell Systems

Shuto Maniwa･Yohei Hidaka･Koichi Kimura･Nobuki Koiwa (Honda R&D)

To improve fuel cell durability, proper control of membrane water content is crucial. A one-dimensional model replicating the porous hollow fiber membrane humidifier's internal phenomena was constructed to estimate humidification. Using this model, a model-based control method for water content during operation was developed.