Durability Prediction of Fuel Cell Adhesive Sheets Using un FC System Simulator

Ryosuke Ichikawa･Takaaki Takei･Naoki Ogiwara･Norishige Konno (Toyota Motor)･Kyohei Kobayashi･Shigeyuki Watanabe (TOYOBO CO., LTD.)

The widespread adoption of fuel cells (FCs) has increased expectations for the commercial multi-purpose applications. For the heavy-duty mobility applications, increasingly severe durability requirements caused by longer operation times and higher temperatures necessitate the advanced durability design. In this study, we focus on an adhesive sheet providing the sealing and insulation functions in the FC cells. The durability prediction methodology is established by integrating the stress and strength concepts into an FC system simulator capable of analyzing the dynamically varying power generation distributions within the FC cell during the HDV driving.

ECMS-based Energy Management Strategy for a Hydrogen Fuel Cell Hybrid Yard Tractor

Juhan Lee･Beomho Lee･Taeho Park･Dohyun Park･Janghyeok Won･Deokjin Kim (Korea Automotive Technology Institute)

Hydrogen fuel cell (FC) hybrid powertrains are a zero-emission option for port yard tractors (YTs), whose high peak power, low average power, and frequent start-stop operation challenge battery-electric solutions. A software-in-the-loop (SILS) model of an FC hybrid YT-80 kW FC stack, 90.7 kWh battery, 310 kW motor-is built in MATLAB/Simulink with IPG TruckMaker. A representative duty cycle from 191 in-service trips shows 22 kW average and 232 kW peak power. The baseline rule-based supervisor yields bimodal FC operation, motivating a proposed ECMS with a PI-based adaptive equivalence factor to shift FC operation into its high-efficiency region while sustaining charge.

Development and evaluation of a water-cooled fuel cell stack with porous rib GDL/MPL

Takumi Nunokawa･Aiko Miyata･Takumi Onda (SUBARU)･Mitsunori Nasu (ENOMOTO)･Makoto Uchida･Masahiro Watanabe (University of Yamanashi)･Naohide Yoshimura (SUBARU)

To reduce the processing cost of bipolar plates and to improve the volumetric power density of the cell, a water-cooled fuel cell incorporating porous rib GDL/MPL was fabricated. Furthermore, a short stack was constructed by stacking multiple cells. The power generation performance and the effects of this approach are reported.