Publication Date:
2011
abstract:
A Li ion polymer battery pack for road vehicles (48 V, 20 Ah) was tested by charging/discharging tests
at different current values, in order to evaluate its performance in comparison with a conventional Pb
acid battery pack. The comparative analysis was also performed integrating the two storage systems
in a hydrogen fuel cell power train for moped applications. The propulsion system comprised a fuel
cell generator based on a 2.5 kW polymeric electrolyte membrane (PEM) stack, fuelled with compressed
hydrogen, an electric drive of 1.8 kW as nominal power, of the same typology of that installed on commercial
electric scooters (brushless electric machine and controlled bidirectional inverter). The power
train was characterized making use of a test bench able to simulate the vehicle behaviour and road characteristics
on driving cycles with different acceleration/deceleration rates and lengths. The power flows
between fuel cell system, electric energy storage system and electric drive during the different cycles
were analyzed, evidencing the effect of high battery currents on the vehicle driving range. The use of Li
batteries in the fuel cell power train, adopting a range extender configuration, determined a hydrogen
consumption lower than the correspondent Pb battery/fuel cell hybrid vehicle, with a major flexibility in
the power management.
at different current values, in order to evaluate its performance in comparison with a conventional Pb
acid battery pack. The comparative analysis was also performed integrating the two storage systems
in a hydrogen fuel cell power train for moped applications. The propulsion system comprised a fuel
cell generator based on a 2.5 kW polymeric electrolyte membrane (PEM) stack, fuelled with compressed
hydrogen, an electric drive of 1.8 kW as nominal power, of the same typology of that installed on commercial
electric scooters (brushless electric machine and controlled bidirectional inverter). The power
train was characterized making use of a test bench able to simulate the vehicle behaviour and road characteristics
on driving cycles with different acceleration/deceleration rates and lengths. The power flows
between fuel cell system, electric energy storage system and electric drive during the different cycles
were analyzed, evidencing the effect of high battery currents on the vehicle driving range. The use of Li
batteries in the fuel cell power train, adopting a range extender configuration, determined a hydrogen
consumption lower than the correspondent Pb battery/fuel cell hybrid vehicle, with a major flexibility in
the power management.
Iris type:
01.01 Articolo in rivista
Keywords:
Hybrid vehicles; Hydrogen; Lithium battery; PEM fuel cells; Power management
List of contributors:
Migliardini, Fortunato; Veneri, Ottorino; Capasso, Clemente; Corbo, Pasquale
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